402 lines
113 KiB
XML
402 lines
113 KiB
XML
<document id="90DCF6A8691AF6E8447663793FE607F5" ID-CLB-Dataset="7447" ID-DOI="10.1080/00222930600833800" ID-GBIF-Dataset="3a090e10-1fd7-48bc-8aa7-54dfe7a309c8" ID-ISSN="1464-5262" ID-Zenodo-Dep="4669044" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1617793598279" checkinUser="carolina" docAuthor="Iwata, Fumio" docDate="2006" docId="573F4468FFF8FFF4FF58F590258FFA57" docLanguage="en" docName="JNATHIST.40.15-16.873-913.pdf" docOrigin="Journal of Natural History 40 (15 - 16)" docSource="http://dx.doi.org/10.1080/00222930600833800" docStyle="DocumentStyle:5A9EB2ED5589A523F0236C66DE2A6BA8.4:JNatHist.2005-2007.journal_article.1cover" docStyleId="5A9EB2ED5589A523F0236C66DE2A6BA8" docStyleName="JNatHist.2005-2007.journal_article.1cover" docStyleVersion="4" docTitle="Sanjuannemertes aeilloaesi Iwata 2006" docType="treatment" docVersion="8" lastPageNumber="911" masterDocId="AB063C10FFD9FFD3FFD2F518210EFFA4" masterDocTitle="On four monostiliferous hoplonemerteans, including three new genera and species from Washington state and British Columbia" masterLastPageNumber="913" masterPageNumber="873" pageNumber="905" updateTime="1698936151545" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:titleInfo id="C9B37F90654BB9230FA32B0A7324447D">
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<mods:title id="B40A80BCA12B55B13BF1705C858B8F54">On four monostiliferous hoplonemerteans, including three new genera and species from Washington state and British Columbia</mods:title>
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</mods:titleInfo>
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<mods:name id="A36C41EAD728FC3C854386EA7A4C11F5" type="personal">
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<mods:roleTerm id="25D133C48E22DEE1C7AA1075EE5A0A3D">Author</mods:roleTerm>
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<mods:namePart id="CAA956D14BA844374040C60260C88D71">Iwata, Fumio</mods:namePart>
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<mods:typeOfResource id="3107B62A414FC183DE6B0CC7185D6F89">text</mods:typeOfResource>
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<mods:titleInfo id="CD4FAB9FF20E19649C0D7A8167A199A9">
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<mods:title id="FD97AE0E1268B46BDBD00D6FF648F735">Journal of Natural History</mods:title>
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</mods:titleInfo>
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<mods:part id="347D583781815FE3A4C05F6FF3E07FD1">
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<mods:date id="DF784C695B22AF8878616E3BA5BF95AE">2006</mods:date>
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<mods:detail id="6A2ABC57D5D7B715BAF9171E388D87E8" type="pubDate">
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<mods:number id="77F8547E7BCAB7BDF8EBA0F0AA2927DD">2006-08-22</mods:number>
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</mods:detail>
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<mods:detail id="778E5B112C6F1C9DB709A34C76320458" type="volume">
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<mods:number id="E53C986691D6610D654FFF2B4394809C">40</mods:number>
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</mods:detail>
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<mods:detail id="A0179D3175CD43C5CEA63F3C66E30964" type="issue">
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<mods:number id="6D3B81040C173A404BA460A30A83FE6A">15 - 16</mods:number>
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</mods:detail>
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<mods:extent id="23B141E2D8626FE21168B6F932C08303" unit="page">
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<mods:start id="02C283DD4FD0BCBE310C58B7A1684CE7">873</mods:start>
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<mods:end id="63C48E01B729E7F93F3C436CD193B43A">913</mods:end>
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</mods:extent>
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<mods:url id="7FE32B08D917DCA45DC8EC65467B8903">http://dx.doi.org/10.1080/00222930600833800</mods:url>
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<mods:classification id="F945CBAC5CA8C1238A19C46E9101B81A">journal article</mods:classification>
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<mods:identifier id="BF2DE6AC8E62D943B1C1B18162B163AE" type="CLB-Dataset">7447</mods:identifier>
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<mods:identifier id="13F519948CC430BF2F2D9478ED272546" type="DOI">10.1080/00222930600833800</mods:identifier>
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<mods:identifier id="5B6CC411F09719680140FAF3FC584ECC" type="GBIF-Dataset">3a090e10-1fd7-48bc-8aa7-54dfe7a309c8</mods:identifier>
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<mods:identifier id="FB07624EABC2F634840BC5C3990EB222" type="ISSN">1464-5262</mods:identifier>
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<mods:identifier id="82DD0FAB9A8A5B8F43FE1335C66FBC9C" type="Zenodo-Dep">4669044</mods:identifier>
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<treatment id="573F4468FFF8FFF4FF58F590258FFA57" ID-DOI="http://doi.org/10.5281/zenodo.4672308" ID-GBIF-Taxon="180881582" ID-Zenodo-Dep="4672308" LSID="urn:lsid:plazi:treatment:573F4468FFF8FFF4FF58F590258FFA57" httpUri="http://treatment.plazi.org/id/573F4468FFF8FFF4FF58F590258FFA57" lastPageId="39" lastPageNumber="911" pageId="33" pageNumber="905">
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<subSubSection id="978CA6F5FFF8FFF2FF58F5902348FF04" box="[138,582,136,160]" pageId="33" pageNumber="905" type="nomenclature">
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<paragraph id="DF29F57EFFF8FFF2FF58F5902348FF04" blockId="33.[138,582,136,160]" box="[138,582,136,160]" pageId="33" pageNumber="905">
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<taxonomicName id="18968EFDFFF8FFF2FF58F5902091FF04" authorityName="Iwata" authorityYear="2006" box="[138,415,136,160]" class="Enopla" family="Emplectonematidae" genus="Sanjuannemertes" kingdom="Animalia" order="Monostilifera" pageId="33" pageNumber="905" phylum="Nemertea" rank="species" species="aeilloaesi">
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<emphasis id="EDE2296CFFF8FFF2FF58F5902091FF04" box="[138,415,136,160]" italics="true" pageId="33" pageNumber="905">Sanjuannemertes aeilloaesi</emphasis>
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</taxonomicName>
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gen., sp. nov.
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</paragraph>
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</subSubSection>
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<subSubSection id="978CA6F5FFF8FFF2FF58F5DB206DFE6D" pageId="33" pageNumber="905" type="materials_examined">
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<paragraph id="DF29F57EFFF8FFF2FF58F5DB2026FF7E" blockId="33.[138,296,194,218]" box="[138,296,194,218]" pageId="33" pageNumber="905">
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<emphasis id="EDE2296CFFF8FFF2FF58F5DB2026FF7E" box="[138,296,194,218]" italics="true" pageId="33" pageNumber="905">Type specimen</emphasis>
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F5EA25AFFE8E" blockId="33.[138,1185,242,298]" pageId="33" pageNumber="905">
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<materialsCitation id="6FFEFF23FFF8FFF2FF58F5EA25AFFE8E" ID-GBIF-Occurrence="3069283305" collectionCode="USNM" pageId="33" pageNumber="905" specimenCode="USNM 1072181" specimenCount="1" typeStatus="holotype">
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<typeStatus id="002D4BDCFFF8FFF2FF58F5EA21F4FEAE" box="[138,250,242,266]" pageId="33" pageNumber="905" type="holotype">Holotype</typeStatus>
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:
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<specimenCode id="8F305D05FFF8FFF2FED6F5EA20C2FEAE" box="[260,460,242,266]" collectionCode="USNM" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="33" pageNumber="905" type="Museum">USNM 1072181</specimenCode>
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; 22 slides of stained serial section, including transverse sections of the anterior portion of the body (9) and tail (5) and horizontal sections of the midgut (8).
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</materialsCitation>
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F47A25AEFE0E" blockId="33.[138,278,354,377]" lastBlockId="33.[138,1184,402,457]" pageId="33" pageNumber="905">
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<emphasis id="EDE2296CFFF8FFF2FF58F47A2018FEDE" box="[138,278,354,378]" italics="true" pageId="33" pageNumber="905">Type locality</emphasis>
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San Juan Channel,
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<collectingRegion id="1D523B9CFFF8FFF2FE52F48A2301FE0E" box="[384,527,402,426]" country="United States of America" name="Washington" pageId="33" pageNumber="905">Washington</collectingRegion>
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,
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<collectingCountry id="A781B5EEFFF8FFF2FDF3F48A2354FE0E" box="[545,602,402,426]" name="United States of America" pageId="33" pageNumber="905">USA</collectingCountry>
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(48
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<emphasis id="EDE2296CFFF8FFF2FD42F48A2394FE0E" bold="true" box="[656,666,402,426]" italics="true" pageId="33" pageNumber="905">°</emphasis>
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34.3
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<emphasis id="EDE2296CFFF8FFF2FD1CF48923D9FE0D" bold="true" box="[718,727,401,425]" italics="true" pageId="33" pageNumber="905">9</emphasis>
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N, 123
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<emphasis id="EDE2296CFFF8FFF2FCECF48A2246FE0E" bold="true" box="[830,840,402,426]" italics="true" pageId="33" pageNumber="905">°</emphasis>
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1.7
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<emphasis id="EDE2296CFFF8FFF2FCBCF4892279FE0D" bold="true" box="[878,887,401,425]" italics="true" pageId="33" pageNumber="905">9</emphasis>
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W), depth 62 fathoms,
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F4A9206DFE6D" blockId="33.[138,1184,402,457]" box="[138,355,433,457]" pageId="33" pageNumber="905">
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<date id="AB28D3BEFFF8FFF2FF58F4A92051FE6D" box="[138,351,433,457]" pageId="33" pageNumber="905" value="1964-10-21">October 21, 1964</date>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="978CA6F5FFF8FFF4FF58F719258FFA57" lastPageId="39" lastPageNumber="911" pageId="33" pageNumber="905" type="description">
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<paragraph id="DF29F57EFFF8FFF2FF58F719202CFDBD" blockId="33.[138,290,513,537]" box="[138,290,513,537]" pageId="33" pageNumber="905">
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<emphasis id="EDE2296CFFF8FFF2FF58F719202CFDBD" bold="true" box="[138,290,513,537]" pageId="33" pageNumber="905">Description</emphasis>
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F729204FFDED" blockId="33.[138,321,561,585]" box="[138,321,561,585]" pageId="33" pageNumber="905">
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<emphasis id="EDE2296CFFF8FFF2FF58F729204FFDED" box="[138,321,561,585]" italics="true" pageId="33" pageNumber="905">External features</emphasis>
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F7792053FBB3" blockId="33.[138,1185,609,1047]" pageId="33" pageNumber="905">
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The body was small and cylindrical,
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<quantity id="186E589BFFF8FFF2FD98F7792394FDDD" box="[586,666,609,633]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="33" pageNumber="905" unit="mm" value="15.0">15 mm</quantity>
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long and
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<quantity id="186E589BFFF8FFF2FCC8F779227FFDDD" box="[794,881,609,633]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="33" pageNumber="905" unit="mm" value="1.5">1.5 mm</quantity>
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wide (
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<figureCitation id="47ADE9FBFFF8FFF2FC14F779254CFDDD" box="[966,1090,609,633]" captionStart="Figure 1" captionStartId="4.[125,185,1582,1601]" captionTargetBox="[126,1171,134,1546]" captionTargetId="figure-1@4.[126,1172,134,1546]" captionTargetPageId="4" captionText="Figure 1. (1) Dorsal view, sketch of living holotype specimen of Frontonemertes serpentina, new genus and species; (2) dorsal view, sketch of living holotype specimen of Satellitenemertes satellitensis, new genus and species; (3) dorsal view, sketch of living specimen of Nipponnemertes bimaculata (Coe) from Satellite Channel; (4) dorsal view, sketch of living holotype specimen of Sanjuannemertes aeilloaesi, new genus and species." figureDoi="http://doi.org/10.5281/zenodo.4669046" httpUri="https://zenodo.org/record/4669046/files/figure.png" pageId="33" pageNumber="905">Figure 1.4</figureCitation>
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||
). When contracted, it was
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<quantity id="186E589BFFF8FFF2FE8FF79920A3FD3D" box="[349,429,641,665]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="33" pageNumber="905" unit="mm" value="10.0">10 mm</quantity>
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||
long and
|
||
<quantity id="186E589BFFF8FFF2FDF3F799236CFD3D" box="[545,610,641,665]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="33" pageNumber="905" unit="mm" value="2.0">2 mm</quantity>
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wide. The anterior edge of the head was rounded (
|
||
<figureCitation id="47ADE9FBFFF8FFF2FF40F7B9203FFD1D" box="[146,305,673,697]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17a, c</figureCitation>
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) or slightly indented (
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<figureCitation id="47ADE9FBFFF8FFF2FD90F7B923CBFD1D" box="[578,709,673,697]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17b</figureCitation>
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). The posterior end of the body had a papilla-like protrusion (
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<figureCitation id="47ADE9FBFFF8FFF2FE49F7D92312FD7D" box="[411,540,705,729]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17e</figureCitation>
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). There were two oblique cephalic grooves on both the dorsal and the ventral sides of the head (
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<figureCitation id="47ADE9FBFFF8FFF2FD88F7F823C4FD5C" box="[602,714,736,760]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17</figureCitation>
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a–d). On the ventral side, the mouth and proboscis pore are in a slit-like depression that crosses the anterior cephalic groove (
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<figureCitation id="47ADE9FBFFF8FFF2FF40F638201BFC9C" box="[146,277,800,824]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17b</figureCitation>
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). The color of the body was orange or light vermilion. On both the dorsal and the ventral surfaces of the anterior portion of the body there were numerous narrow, pale orange or whitish transverse lines. The whitish proboscis apparatus could be seen through the body wall; the basis of the central stylet was evident as a milky white patch. The four ocelli, visible on the dorsal side, were arranged in the form of a trapezoid. The two anterior ocelli were closer than those of the posterior pair and were situated just in front of the anterior cephalic groove, whereas the other pair was situated underneath the posterior one (
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<figureCitation id="47ADE9FBFFF8FFF2FF40F6E72041FBB3" box="[146,335,1023,1047]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figure 17a, c, d</figureCitation>
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).
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F1572344FBC3" blockId="33.[138,586,1103,1127]" box="[138,586,1103,1127]" pageId="33" pageNumber="905">
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<emphasis id="EDE2296CFFF8FFF2FF58F1572344FBC3" box="[138,586,1103,1127]" italics="true" pageId="33" pageNumber="905">Body aeall, musculature and parenchyma</emphasis>
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</paragraph>
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<paragraph id="DF29F57EFFF8FFF2FF58F16720F1FA52" blockId="33.[138,1185,1151,1526]" pageId="33" pageNumber="905">
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The body in transverse section is circular in both the cephalic and midgut regions (
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<figureCitation id="47ADE9FBFFF8FFF2FF40F187201DFB13" box="[146,275,1183,1207]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="33" pageNumber="905">Figure 18a</figureCitation>
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). The epidermis is of uniform thickness (about
|
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<quantity id="186E589BFFF8FFF2FCBCF18722B5FB13" box="[878,955,1181,1207]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="33" pageNumber="905" unit="mm" value="60.0">60 mm</quantity>
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). Large unicellular glands are distributed over the entire body and are especially well developed in the midgut region. Cyanophilic glands are not present between them. In the cephalic region, the epidermis and longitudinal muscle layer of the body wall are nearly the same in thickness, and glandular cells are confined to the upper portion. The dermis,
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||
<quantity id="186E589BFFF8FFF2FC61F0062519FA92" box="[947,1047,1308,1334]" metricMagnitude="-3" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" pageId="33" pageNumber="905" unit="mm" value="7.5" valueMax="10.0" valueMin="5.0">5–10 mm</quantity>
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thick, onefourth to one-tenth the thickness of the epidermis (
|
||
<figureCitation id="47ADE9FBFFF8FFF2FD1DF026225CFAF2" box="[719,850,1342,1366]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="33" pageNumber="905">Figure 18b</figureCitation>
|
||
). The body wall musculature consists of a thin outer circular layer (
|
||
<quantity id="186E589BFFF8FFF2FD91F0462383FAD2" box="[579,653,1372,1398]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="33" pageNumber="905" unit="mm" value="10.0">10 mm</quantity>
|
||
thick) and an inner longitudinal layer (
|
||
<quantity id="186E589BFFF8FFF2FB85F04625AFFAD2" box="[1111,1185,1372,1398]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="33" pageNumber="905" unit="mm" value="60.0">60 mm</quantity>
|
||
thick). There is sparse lattice-type diagonal muscle layer between them. The longitudinal layer is not divided into inner and outer portions anteriorly. There are no head retractor muscles related to the longitudinal muscle layer. Dorsoventral and radial muscle fibres, as well as parenchyma, are absent.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFF8FFF2FF58F3352345F9E1" blockId="33.[138,1185,1581,1685]" box="[138,587,1581,1605]" pageId="33" pageNumber="905">
|
||
<emphasis id="EDE2296CFFF8FFF2FF58F3352345F9E1" box="[138,587,1581,1605]" italics="true" pageId="33" pageNumber="905">Rhynchodeum, rhynchocoel and proboscis</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFF8FFF1FF58F34520D7F9B1" blockId="33.[138,1185,1581,1685]" lastBlockId="34.[125,1172,1278,1685]" lastPageId="34" lastPageNumber="906" pageId="33" pageNumber="905">
|
||
The proboscis pore,
|
||
<quantity id="186E589BFFF8FFF2FEA5F34520B1F9D1" box="[375,447,1627,1653]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="33" pageNumber="905" unit="mm" value="60.0">60 mm</quantity>
|
||
long and
|
||
<quantity id="186E589BFFF8FFF2FDE3F3452386F9D1" box="[561,648,1627,1653]" metricMagnitude="-1" metricUnit="m" metricValue="1.1" pageId="33" pageNumber="905" unit="mm" value="110.0">110 mm</quantity>
|
||
wide, is a mid-ventral furrow. With the mouth it forms a common atrium (
|
||
<figureCitation id="47ADE9FBFFF8FFF2FE16F365235FF931" box="[452,593,1661,1685]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="33" pageNumber="905">Figures 17b</figureCitation>
|
||
,
|
||
<figureCitation id="47ADE9FBFFF8FFF2FD8EF3652388F931" box="[604,646,1661,1685]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="33" pageNumber="905">18c</figureCitation>
|
||
and
|
||
<figureCitation id="47ADE9FBFFF8FFF2FD6CF36523E0F931" box="[702,750,1661,1685]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="33" pageNumber="905">19d</figureCitation>
|
||
). Its wall is
|
||
<quantity id="186E589BFFF8FFF2FCA6F36522B2F931" box="[884,956,1659,1685]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="33" pageNumber="905" unit="mm" value="15.0">15 mm</quantity>
|
||
thick and lacks cilia and glands. The rhynchodeum is circular in transverse section owing to the proboscis protruded into it and is covered by a thick layer (
|
||
<quantity id="186E589BFFFBFFF1FCC5F0062280FA92" box="[791,910,1308,1334]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" metricValueMax="6.0" metricValueMin="2.0" pageId="34" pageNumber="906" unit="mm" value="40.0" valueMax="60.0" valueMin="20.0">20–60 mm</quantity>
|
||
) of circular muscles (
|
||
<figureCitation id="47ADE9FBFFFBFFF1FF57F0262006FAF2" box="[133,264,1342,1366]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="34" pageNumber="906">Figure 18d</figureCitation>
|
||
). The rhynchodeum measures
|
||
<quantity id="186E589BFFFBFFF1FDA0F02623C7FAF2" box="[626,713,1340,1366]" metricMagnitude="-1" metricUnit="m" metricValue="2.6" pageId="34" pageNumber="906" unit="mm" value="260.0">260 mm</quantity>
|
||
long and is at first cylindrical, but then broadens to a width of
|
||
<quantity id="186E589BFFFBFFF1FE12F046235EFAD2" box="[448,592,1372,1398]" metricMagnitude="-1" metricUnit="m" metricValue="3.75" metricValueMax="4.5" metricValueMin="3.0" pageId="34" pageNumber="906" unit="mm" value="375.0" valueMax="450.0" valueMin="300.0">300–450 mm</quantity>
|
||
(
|
||
<figureCitation id="47ADE9FBFFFBFFF1FDB8F04623D7FAD2" box="[618,729,1374,1398]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="34" pageNumber="906">Figure 18</figureCitation>
|
||
d–h). At the posterior end of the rhynchodeum, where its circular muscle sphincter disappears, the pre-cerebral septum is formed by radial longitudinal muscles derived from the longitudinal muscle layer in the dorsal side of the body; the proboscis insertion also becomes evident (
|
||
<figureCitation id="47ADE9FBFFFBFFF1FC18F0A62542FA72" box="[970,1100,1470,1494]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="34" pageNumber="906">
|
||
Figure
|
||
<quantity id="186E589BFFFBFFF1FBCFF0A62542FA72" box="[1053,1100,1470,1494]" metricMagnitude="-2" metricUnit="kg" metricValue="1.8" pageId="34" pageNumber="906" unit="g" value="18.0">18g</quantity>
|
||
</figureCitation>
|
||
). The lateral and ventral sides of the body contain no radial longitudinal muscles in the precerebral septum (
|
||
<figureCitation id="47ADE9FBFFFBFFF1FE9AF0E520C2F9B1" box="[328,460,1533,1557]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="34" pageNumber="906">Figure 18h</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="8BE9A5F6FFFBFFF1FFAFF16A232FFB71" ID-DOI="http://doi.org/10.5281/zenodo.4669084" ID-Zenodo-Dep="4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="34" pageNumber="906" startId="34.[125,185,1138,1157]" targetBox="[127,1166,136,1102]" targetPageId="34">
|
||
<paragraph id="DF29F57EFFFBFFF1FFAFF16A232FFB71" blockId="34.[125,1173,1138,1237]" pageId="34" pageNumber="906">
|
||
Figure 17.
|
||
<taxonomicName id="18968EFDFFFBFFF1FF3BF16A20CBFB21" authority="Iwata, 2006" authorityName="Iwata" authorityYear="2006" box="[233,453,1138,1157]" class="Enopla" family="Emplectonematidae" genus="Sanjuannemertes" kingdom="Animalia" order="Monostilifera" pageId="34" pageNumber="906" phylum="Nemertea" rank="species" species="aeilloaesi" status="new genus and new species">
|
||
<emphasis id="EDE2296CFFFBFFF1FF3BF16A20CBFB21" box="[233,453,1138,1157]" italics="true" pageId="34" pageNumber="906">Sanjuannemertes aeilloaesi</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="F6D19417FFFBFFF1FE01F16A23DAFB21" box="[467,724,1138,1157]" pageId="34" pageNumber="906" rank="species">new genus and new species</taxonomicNameLabel>
|
||
, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="DF29F57EFFFBFFF6FF4AF3052371FEA4" blockId="34.[125,1172,1278,1685]" lastBlockId="37.[138,1185,137,256]" lastPageId="37" lastPageNumber="909" pageId="34" pageNumber="906">
|
||
The proboscis diaphragm has a central stylet and a vase-shaped basis
|
||
<quantity id="186E589BFFFBFFF1FC25F3052540F991" box="[1015,1102,1563,1589]" metricMagnitude="-1" metricUnit="m" metricValue="4.0" pageId="34" pageNumber="906" unit="mm" value="400.0">400 mm</quantity>
|
||
long,
|
||
<quantity id="186E589BFFFBFFF1FFAFF32521CBF9F1" box="[125,197,1595,1621]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="34" pageNumber="906" unit="mm" value="70.0">70 mm</quantity>
|
||
wide at its top and
|
||
<quantity id="186E589BFFFBFFF1FE7BF32520FFF9F1" box="[425,497,1595,1621]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="34" pageNumber="906" unit="mm" value="60.0">60 mm</quantity>
|
||
wide at its middle portion (
|
||
<figureCitation id="47ADE9FBFFFBFFF1FCE3F32522C0F9F1" box="[817,974,1597,1621]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="34" pageNumber="906">Figure 19a, b</figureCitation>
|
||
). In sections, the basis shows a strong affinity for eosin and its content is not extruded. The central stylet measures
|
||
<quantity id="186E589BFFFBFFF1FF3DF3652039F931" box="[239,311,1659,1685]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="34" pageNumber="906" unit="mm" value="40.0">40 mm</quantity>
|
||
long (
|
||
<figureCitation id="47ADE9FBFFFBFFF1FE52F365230FF931" box="[384,513,1661,1685]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="34" pageNumber="906">Figure 19a</figureCitation>
|
||
). The basis of the central stylet rests on a small bolster, is surrounded by a thick layer of circular muscles (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FD03F591225FFF05" box="[721,849,137,161]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">Figure 19b</figureCitation>
|
||
) and, in sections, shows no posteriorly inserted accessory stylet. The stylet bulb consists of a thick wall of circular muscles,
|
||
<quantity id="186E589BFFFCFFF6FF27F5D02042FF44" box="[245,332,198,224]" metricMagnitude="-1" metricUnit="m" metricValue="3.0" pageId="37" pageNumber="909" unit="mm" value="300.0">300 mm</quantity>
|
||
wide. There are two accessory stylet pouches, each containing two stylets (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FF40F5F0201CFEA4" box="[146,274,232,256]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">Figure 19c</figureCitation>
|
||
). The proboscis has 10 nerves.
|
||
</paragraph>
|
||
<caption id="8BE9A5F6FFFAFFF0FF58F06E22D5F937" ID-DOI="http://doi.org/10.5281/zenodo.4669088" ID-Zenodo-Dep="4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="35" pageNumber="907" startId="35.[138,198,1398,1417]" targetBox="[167,1156,133,1362]" targetPageId="35">
|
||
<paragraph id="DF29F57EFFFAFFF0FF58F06E22D5F937" blockId="35.[138,1185,1398,1683]" pageId="35" pageNumber="907">
|
||
Figure 18.
|
||
<taxonomicName id="18968EFDFFFAFFF0FF26F06E20C1FA2D" authority="Iwata, 2006" authorityName="Iwata" authorityYear="2006" box="[244,463,1398,1417]" class="Enopla" family="Emplectonematidae" genus="Sanjuannemertes" kingdom="Animalia" order="Monostilifera" pageId="35" pageNumber="907" phylum="Nemertea" rank="species" species="aeilloaesi" status="new genus and species">
|
||
<emphasis id="EDE2296CFFFAFFF0FF26F06E20C1FA2D" box="[244,463,1398,1417]" italics="true" pageId="35" pageNumber="907">Sanjuannemertes aeilloaesi</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="F6D19417FFFAFFF0FE09F06E23A5FA2D" box="[475,683,1398,1417]" pageId="35" pageNumber="907" rank="species">new genus and species</taxonomicNameLabel>
|
||
, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach.
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="8BE9A5F6FFFDFFF7FFAFF06D2550F936" ID-DOI="http://doi.org/10.5281/zenodo.4669092" ID-Zenodo-Dep="4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="36" pageNumber="908" startId="36.[125,185,1397,1416]" targetBox="[155,1142,133,1361]" targetPageId="36">
|
||
<paragraph id="DF29F57EFFFDFFF7FFAFF06D2550F936" blockId="36.[125,1173,1397,1682]" pageId="36" pageNumber="908">
|
||
Figure 19.
|
||
<taxonomicName id="18968EFDFFFDFFF7FF3BF06D20CBFA2C" authority="Iwata, 2006" authorityName="Iwata" authorityYear="2006" box="[233,453,1397,1416]" class="Enopla" family="Emplectonematidae" genus="Sanjuannemertes" kingdom="Animalia" order="Monostilifera" pageId="36" pageNumber="908" phylum="Nemertea" rank="species" species="aeilloaesi" status="new genus and species">
|
||
<emphasis id="EDE2296CFFFDFFF7FF3BF06D20CBFA2C" box="[233,453,1397,1416]" italics="true" pageId="36" pageNumber="908">Sanjuannemertes aeilloaesi</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="F6D19417FFFDFFF7FE01F06D23A6FA2C" box="[467,680,1397,1416]" pageId="36" pageNumber="908" rank="species">new genus and species</taxonomicNameLabel>
|
||
, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F42C2048FEE8" blockId="37.[138,326,308,332]" box="[138,326,308,332]" pageId="37" pageNumber="909">
|
||
<emphasis id="EDE2296CFFFCFFF6FF58F42C2048FEE8" box="[138,326,308,332]" italics="true" pageId="37" pageNumber="909">Alimentary canal</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F47D2040FD98" blockId="37.[138,1185,357,733]" pageId="37" pageNumber="909">
|
||
The alimentary canal has four major divisions; stomach, pylorus, midgut (with anteriorly directed caecum and lateral diverticula) and hind gut. The mouth and the proboscis pore open into a common atrium on the ventral side of the head; they are not joined together (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FF2DF4DC2082FE78" box="[255,396,452,476]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="37" pageNumber="909">Figures 17b</figureCitation>
|
||
,
|
||
<figureCitation id="47ADE9FBFFFCFFF6FE4CF4DC20E4FE78" box="[414,490,452,476]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="37" pageNumber="909">18c, e</figureCitation>
|
||
and
|
||
<figureCitation id="47ADE9FBFFFCFFF6FDE3F4DC238DFE78" box="[561,643,452,476]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">19d, e</figureCitation>
|
||
). There is no oesophagus; the mouth leads directly to the stomach (
|
||
<quantity id="186E589BFFFCFFF6FE61F4FC2302FE58" box="[435,524,482,508]" metricMagnitude="-1" metricUnit="m" metricValue="5.0" pageId="37" pageNumber="909" unit="mm" value="500.0">500 mm</quantity>
|
||
long). The stomach has a deep lengthwise fold for its entire length and is far longer (
|
||
<quantity id="186E589BFFFCFFF6FE2FF71C2356FDB8" box="[509,600,514,540]" metricMagnitude="-1" metricUnit="m" metricValue="1.6" pageId="37" pageNumber="909" unit="mm" value="160.0">160 mm</quantity>
|
||
) than the brain (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FCF6F71C22B1FDB8" box="[804,959,516,540]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="37" pageNumber="909">Figure 18e, f</figureCitation>
|
||
). The stomach has no diverticulum.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF77F75D2088FD79" blockId="37.[138,1185,357,733]" pageId="37" pageNumber="909">
|
||
The pylorus is long, measuring one and one-sixth times the length of the stomach. The intestinal caecum has a pair of short anterior pouches
|
||
<quantity id="186E589BFFFCFFF6FCDDF77D2259FDD9" box="[783,855,611,637]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="37" pageNumber="909" unit="mm" value="40.0">40 mm</quantity>
|
||
long (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FC77F77D2511FDD9" box="[933,1055,613,637]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">Figure 19f</figureCitation>
|
||
) and three pairs of lateral diverticula, beginning immediately behind the posterior end of the brain. The intestinal canal has long lateral diverticula (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FD12F7BD224CFD19" box="[704,834,677,701]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">
|
||
Figure
|
||
<quantity id="186E589BFFFCFFF6FCC1F7BD224CFD19" box="[787,834,677,701]" metricMagnitude="-2" metricUnit="kg" metricValue="1.9" pageId="37" pageNumber="909" unit="g" value="19.0">19g</quantity>
|
||
</figureCitation>
|
||
). The hindgut is
|
||
<quantity id="186E589BFFFCFFF6FBDDF7BD2568FD19" box="[1039,1126,675,701]" metricMagnitude="-1" metricUnit="m" metricValue="1.0" pageId="37" pageNumber="909" unit="mm" value="100.0">100 mm</quantity>
|
||
long and ends at the anus.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F6082077FC8C" blockId="37.[138,377,784,808]" box="[138,377,784,808]" pageId="37" pageNumber="909">
|
||
<emphasis id="EDE2296CFFFCFFF6FF58F6082077FC8C" box="[138,377,784,808]" italics="true" pageId="37" pageNumber="909">Blood υascular system</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F65923FAFB7C" blockId="37.[138,1185,833,1240]" pageId="37" pageNumber="909">
|
||
The blood vascular system has three longitudinal vessels. The two cephalic vessels lateral to the rhynchodeum anastomose above the rhynchodeum near the tip of head to form a simple vascular loop
|
||
<quantity id="186E589BFFFCFFF6FEE5F6992080FC3D" box="[311,398,895,921]" metricMagnitude="-1" metricUnit="m" metricValue="2.0" pageId="37" pageNumber="909" unit="mm" value="200.0">200 mm</quantity>
|
||
wide,
|
||
<quantity id="186E589BFFFCFFF6FE3AF699233EFC3D" box="[488,560,895,921]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="37" pageNumber="909" unit="mm" value="10.0">10 mm</quantity>
|
||
high and
|
||
<quantity id="186E589BFFFCFFF6FD65F699220EFC3D" box="[695,768,895,921]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="37" pageNumber="909" unit="mm" value="20.0">20 mm</quantity>
|
||
long. The vascular loop is not a continuous space (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FEB6F6B920E6FC1D" box="[356,488,929,953]" captionStart="Figure 19" captionStartId="36.[125,185,1397,1416]" captionTargetBox="[155,1142,133,1361]" captionTargetId="figure-1@36.[155,1143,133,1361]" captionTargetPageId="36" captionText="Figure 19. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Longitudinal sections between 57 and 63 in proboscis diaphragum and transverse sections between 16 and 209 from anterior end of body, showing central stylet and anterior portion of basis; (b) posterior portion of basis and its bolster; (c) accessory stylet pouch; (d) proboscis pore, mouth and lips of mouth; (e) posterior portion of mouth and transitional part of stomach without showing oesophagus; (f) transitional area of stomach into pylorus and anterior diverticula of intestinal caecum; (g) deep lateral diverticula of intestine; (h) anastomose of cephalic blood vessels. Scale 50 mm (a), 100 mm (b–f, h) and 200 mm (g). Abbreviations: ac, anastomose of cephalic blood vessel; ag, anterior ventral cephalic groove; ai, anterior diverticula of intestinal caecum; as, accessory stylet; bs, bolster; ce, central stylet; cp, circular muscle layer of proboscis sheath; ct, central stylet basis; db, dorsal blood vessel; in, intestine; la, lateral diverticula of intestine; ls, longitudinal muscle layer of proboscis sheath; mo, mouth; oc, ocellus; pa, pouch of accessory stylet; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; py, pylorus; rc, rhynchocoel; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669092" httpUri="https://zenodo.org/record/4669092/files/figure.png" pageId="37" pageNumber="909">Figure 19h</figureCitation>
|
||
). Farther posteriorly, the cephalic vessels do not form large lacunae and do not give off cerebral vessels. They are slender, at first running alongside the rhynchocoel or near the dorsolateral side of the cerebral organ canal, and then above the cerebral organs, but do not enter the brain ring (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FD6CF1192269FBBD" box="[702,871,1025,1049]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="37" pageNumber="909">Figures 18d, h</figureCitation>
|
||
and
|
||
<figureCitation id="47ADE9FBFFFCFFF6FC73F11922B1FBBD" box="[929,959,1025,1049]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="37" pageNumber="909">20</figureCitation>
|
||
b–d, f, h). Near the posterior end of the cerebral organ, the cephalic vessels extend down between the brain lobes and the rhynchocoel, and fuse into a dorsal vessel; this does not form a median vascular plug inside the proboscis sheath. A lateral vessel from the cephalic vessels, on the other hand, comes down outside the cerebral ganglia (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FC86F19822DBFB3C" box="[852,981,1152,1176]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="37" pageNumber="909">Figure 20a</figureCitation>
|
||
). There are no pseudometameric anastomoses of blood vessels. The dorsal and lateral vessels anastomose at a level,
|
||
<quantity id="186E589BFFFCFFF6FED1F1D82045FB7C" box="[259,331,1214,1240]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="37" pageNumber="909" unit="mm" value="40.0">40 mm</quantity>
|
||
from the posterior end of the body.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F014203CFA87" blockId="37.[138,306,1292,1315]" box="[138,306,1292,1315]" pageId="37" pageNumber="909">
|
||
<emphasis id="EDE2296CFFFCFFF6FF58F014203CFA87" box="[138,306,1292,1315]" italics="true" pageId="37" pageNumber="909">Nerυous system</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF58F0252016FA50" blockId="37.[138,1185,1341,1685]" pageId="37" pageNumber="909">
|
||
The brain and lateral nerves are covered by a thin layer of fibrous connective tissue. The cerebral ganglia are small; they lie immediately outside the large rhynchocoel and have neither neurochord cells nor an inner neurilemma. The nervous system has no accessory lateral nerves. The dorsal and ventral ganglia are not demarcated externally. The ventral ganglia are not distinctly separated from the dorsal ganglia except posteriorly (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FBC8F0A425AFFA70" box="[1050,1185,1468,1492]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="37" pageNumber="909">Figures 18a</figureCitation>
|
||
and
|
||
<figureCitation id="47ADE9FBFFFCFFF6FF6CF0C42004FA50" box="[190,266,1500,1524]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="37" pageNumber="909">20a, g</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFCFFF6FF77F0E5220EF931" blockId="37.[138,1185,1341,1685]" pageId="37" pageNumber="909">
|
||
The dorsal and ventral fibre cores, measuring
|
||
<quantity id="186E589BFFFCFFF6FD6EF0E5221CF9B1" box="[700,786,1531,1557]" metricMagnitude="-1" metricUnit="m" metricValue="1.4" pageId="37" pageNumber="909" unit="mm" value="140.0">140 mm</quantity>
|
||
in length, are not divided anterior to the middle portion of the brain; the dorsal cores (
|
||
<quantity id="186E589BFFFCFFF6FD34F3052221F991" box="[742,815,1563,1589]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="37" pageNumber="909" unit="mm" value="30.0">30 mm</quantity>
|
||
long), are less voluminous than the ventral cores (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FE8FF32520D0F9F1" box="[349,478,1597,1621]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="37" pageNumber="909">Figure 18a</figureCitation>
|
||
). The ventral ganglia behind the posterior end of the dorsal ganglia do not immediately extend laterally to form the lateral nerve cords (
|
||
<figureCitation id="47ADE9FBFFFCFFF6FBC0F345259AF9D1" box="[1042,1172,1629,1653]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="37" pageNumber="909">Figure 20a</figureCitation>
|
||
). The dorsal ganglia do not have bifurcated fibre cores.
|
||
</paragraph>
|
||
<caption id="8BE9A5F6FFFFFFF5FFAFF05923F1F937" ID-DOI="http://doi.org/10.5281/zenodo.4669096" ID-Zenodo-Dep="4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="38" pageNumber="910" startId="38.[125,185,1345,1364]" targetBox="[201,1097,187,1309]" targetPageId="38">
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||
<paragraph id="DF29F57EFFFFFFF5FFAFF05923F1F937" blockId="38.[125,1173,1345,1683]" pageId="38" pageNumber="910">
|
||
Figure 20.
|
||
<taxonomicName id="18968EFDFFFFFFF5FF3AF05920CAFAF0" authority="Iwata, 2006" authorityName="Iwata" authorityYear="2006" box="[232,452,1345,1364]" class="Enopla" family="Emplectonematidae" genus="Sanjuannemertes" kingdom="Animalia" order="Monostilifera" pageId="38" pageNumber="910" phylum="Nemertea" rank="species" species="aeilloaesi" status="new genus and species">
|
||
<emphasis id="EDE2296CFFFFFFF5FF3AF05920CAFAF0" box="[232,452,1345,1364]" italics="true" pageId="38" pageNumber="910">Sanjuannemertes aeilloaesi</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="F6D19417FFFFFFF5FE02F05923ADFAF0" box="[464,675,1345,1364]" pageId="38" pageNumber="910" rank="species">new genus and species</taxonomicNameLabel>
|
||
, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F5912203FE86" blockId="39.[138,1185,135,420]" pageId="39" pageNumber="911">
|
||
The dorsal commissure, curving dorsally for
|
||
<quantity id="186E589BFFFEFFF4FD7DF5912207FF05" box="[687,777,135,161]" metricMagnitude="-1" metricUnit="m" metricValue="6.5" pageId="39" pageNumber="911" unit="mm" value="650.0">650 mm</quantity>
|
||
, is
|
||
<quantity id="186E589BFFFEFFF4FCE2F5912276FF05" box="[816,888,135,161]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="39" pageNumber="911" unit="mm" value="20.0">20 mm</quantity>
|
||
in dorsoventral thickness and
|
||
<quantity id="186E589BFFFEFFF4FF11F5B12005FF65" box="[195,267,167,193]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="39" pageNumber="911" unit="mm" value="30.0">30 mm</quantity>
|
||
in longitudinal thickness. The ventral commissure is straight and shorter, measuring
|
||
<quantity id="186E589BFFFEFFF4FEDFF5D1206AFF45" box="[269,356,199,225]" metricMagnitude="-1" metricUnit="m" metricValue="3.0" pageId="39" pageNumber="911" unit="mm" value="300.0">300 mm</quantity>
|
||
long and
|
||
<quantity id="186E589BFFFEFFF4FE36F5D12322FF45" box="[484,556,199,225]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="39" pageNumber="911" unit="mm" value="50.0">50 mm</quantity>
|
||
in dorsoventral thickness and
|
||
<quantity id="186E589BFFFEFFF4FC72F5D122E6FF45" box="[928,1000,199,225]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="39" pageNumber="911" unit="mm" value="60.0">60 mm</quantity>
|
||
in longitudinal thickness; it is situated much farther posteriorly than the dorsal commissure, there being
|
||
<quantity id="186E589BFFFEFFF4FF58F41221EFFE86" box="[138,225,264,290]" metricMagnitude="-1" metricUnit="m" metricValue="1.6" pageId="39" pageNumber="911" unit="mm" value="160.0">160 mm</quantity>
|
||
between the transverse levels at which they lie.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F43323A6FE00" blockId="39.[138,1185,135,420]" pageId="39" pageNumber="911">A proboscis nerve trunk arises from the anterior surface of the brain at the root of the dorsal commissure and extends upward, soon branching into 10 nerves. The pair of foregut nerves originate from the ventral ganglia and run anteriorly along the lateral side of the stomach. There are no transverse connectives.</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF58F4C52334FE50" blockId="39.[138,570,477,501]" box="[138,570,477,501]" pageId="39" pageNumber="911">
|
||
<emphasis id="EDE2296CFFFEFFF4FF58F4C52334FE50" box="[138,570,477,501]" italics="true" pageId="39" pageNumber="911">Special sensory organ and frontal organ</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF58F7162099FD23" blockId="39.[138,1185,526,1329]" pageId="39" pageNumber="911">
|
||
Of the two oblique cephalic grooves, the anterior one is narrow and has a ridge bearing long cilia (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FF1AF7362047FDE2" box="[200,329,558,582]" captionStart="Figure 18" captionStartId="35.[138,198,1398,1417]" captionTargetBox="[167,1156,133,1362]" captionTargetId="figure-0@35.[167,1156,133,1362]" captionTargetPageId="35" captionText="Figure 18. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 19 and 104 from anterior end of body, showing body circular in transverse section; (b) stomach region; (c) proboscis pore and mouth separated; (d) circular muscle layer of rhynchodeum and proboscis; (e) end of the mouth and stomach wall (oesophagus lacking); (f) stomach; (g) radial longitudinal muscles from body wall longitudinal muscle layer in the dorsal side of the head; (h) proboscis insertion in the lateral side of the head. Scale 100 mm (b–h) and 200 mm (a). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ag, anterior ventral cephalic groove; bc, body wall circular muscle layer; bl, body wall longitudinal muscle layer; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cr, circular muscle layer of rhynchodeum; cs, cerebral sensory organ; cv, cephalic nerves; dg, dorsal ganglion; dr, dermis; mo, mouth; oc, ocellus; pn, proboscis nerve; pr, proboscis; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; rl, radial longitudinal muscles from body wall longitudinal muscle layer; st, stomach; vg, ventral ganglion; wt, wall of stomach." figureDoi="http://doi.org/10.5281/zenodo.4669088" httpUri="https://zenodo.org/record/4669088/files/figure.png" pageId="39" pageNumber="911">Figure 18e</figureCitation>
|
||
). The anterior grooves on both the dorsal and ventral sides of the head are united laterally and, at the point of union, form a short canal that extends nearly to the dermis (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FF3BF7772087FD23" box="[233,393,623,647]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20b, c</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F788256BFC8D" blockId="39.[138,1185,526,1329]" pageId="39" pageNumber="911">
|
||
The anterior two ocelli are buried in the middle portion of the head, where the longitudinal musculature is dominant (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FDB3F7A823ECFD6C" box="[609,738,688,712]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20e</figureCitation>
|
||
), but the posterior ones are situated above the posterior portion of the cerebral sensory organs (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FCEEF7C822CEFD4C" box="[828,960,720,744]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20d</figureCitation>
|
||
). All four ocelli are the same size, measuring
|
||
<quantity id="186E589BFFFEFFF4FE68F7E9230CFCAD" box="[442,514,751,777]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="39" pageNumber="911" unit="mm" value="60.0">60 mm</quantity>
|
||
wide,
|
||
<quantity id="186E589BFFFEFFF4FD86F7E92392FCAD" box="[596,668,751,777]" metricMagnitude="-2" metricUnit="m" metricValue="9.0" pageId="39" pageNumber="911" unit="mm" value="90.0">90 mm</quantity>
|
||
high and
|
||
<quantity id="186E589BFFFEFFF4FCCAF7E9226EFCAD" box="[792,864,751,777]" metricMagnitude="-2" metricUnit="m" metricValue="6.0" pageId="39" pageNumber="911" unit="mm" value="60.0">60 mm</quantity>
|
||
long (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FC7FF7E92540FCAD" box="[941,1102,753,777]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20d, e</figureCitation>
|
||
). Each ocellus consists of an outer layer of ocular cells and an internal cytoplasmic portion.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F62A252AFC2F" blockId="39.[138,1185,526,1329]" pageId="39" pageNumber="911">
|
||
The frontal organ and frontal glands are not well-developed; the former opens on the ventral side of the anterior end of the head, while the latter forms a small mass of glands,
|
||
<quantity id="186E589BFFFEFFF4FF58F66B21DCFC2F" box="[138,210,881,907]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="39" pageNumber="911" unit="mm" value="20.0">20 mm</quantity>
|
||
long (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FECCF66B20AEFC2F" box="[286,416,883,907]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20e</figureCitation>
|
||
). Cephalic glands and sub-muscular glands are absent.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F68C22AAFBCA" blockId="39.[138,1185,526,1329]" pageId="39" pageNumber="911">
|
||
The cerebral sensory organs are large and reach the lateral sides of the brain lobes. The one on the right side of the head is crescentic in section, 230X
|
||
<quantity id="186E589BFFFEFFF4FC50F6AC22C4FC68" box="[898,970,946,972]" metricMagnitude="-2" metricUnit="m" metricValue="9.0" pageId="39" pageNumber="911" unit="mm" value="90.0">90 mm</quantity>
|
||
in diameter in its anterior portion (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FE84F6CC20DDFC48" box="[342,467,980,1004]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20f</figureCitation>
|
||
); whereas on the left side is flattened between the body wall and the brain, being
|
||
<quantity id="186E589BFFFEFFF4FE59F6ED20DDFBA9" box="[395,467,1011,1037]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="39" pageNumber="911" unit="mm" value="70.0">70 mm</quantity>
|
||
wide,
|
||
<quantity id="186E589BFFFEFFF4FDFAF6ED2370FBA9" box="[552,638,1011,1037]" metricMagnitude="-1" metricUnit="m" metricValue="4.2" pageId="39" pageNumber="911" unit="mm" value="420.0">420 mm</quantity>
|
||
high and
|
||
<quantity id="186E589BFFFEFFF4FD2CF6ED225BFBA9" box="[766,853,1011,1037]" metricMagnitude="-1" metricUnit="m" metricValue="1.1" pageId="39" pageNumber="911" unit="mm" value="110.0">110 mm</quantity>
|
||
long in the middle portion (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FF40F10D201AFB89" box="[146,276,1045,1069]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">
|
||
Figure
|
||
<quantity id="186E589BFFFEFFF4FF37F10D201AFB89" box="[229,276,1045,1069]" metricMagnitude="-2" metricUnit="kg" metricValue="2.0" pageId="39" pageNumber="911" unit="g" value="20.0">20g</quantity>
|
||
</figureCitation>
|
||
). It has a sensory canal that is 50X
|
||
<quantity id="186E589BFFFEFFF4FD00F10D2214FB89" box="[722,794,1043,1069]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="39" pageNumber="911" unit="mm" value="70.0">70 mm</quantity>
|
||
in diameter and possesses welldeveloped eosinophilic glands on both the dorsal and ventral sides (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FC69F12D2556FBE9" box="[955,1112,1077,1101]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20f, g</figureCitation>
|
||
). The ganglionic mass is found lateral to the sensory canal (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FD2EF14E2298FBCA" box="[764,918,1110,1134]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20f, g</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF77F16F2327FA95" blockId="39.[138,1185,526,1329]" pageId="39" pageNumber="911">
|
||
The cerebral organ canal, ciliated and
|
||
<quantity id="186E589BFFFEFFF4FDB7F16F23B2FB2B" box="[613,700,1141,1167]" metricMagnitude="-1" metricUnit="m" metricValue="1.2" pageId="39" pageNumber="911" unit="mm" value="120.0">120 mm</quantity>
|
||
long, begins at the mid-lateral side of the anterior cephalic groove of the head, and extends posteriorly inside the longitudinal muscle layer of the body wall (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FE4FF1A02329FB74" box="[413,551,1208,1232]" captionStart="Figure 17" captionStartId="34.[125,185,1138,1157]" captionTargetBox="[127,1166,136,1102]" captionTargetId="figure-190@34.[125,1172,133,1102]" captionTargetPageId="34" captionText="Figure 17. Sanjuannemertes aeilloaesi, new genus and new species, holotype. (a) Anterior portion, dorsal view; (b) anterior portion, ventral view; (c) anterior portion, dorsal view; (d) anterior portion, lateral view; (e) posterior end. Abbreviations: ap, anterior cephalic groove; ao, anterior ocellus; pg, posterior cephalic groove; pd, pore of mouth and proboscis opening; po, posterior ocellus." figureDoi="http://doi.org/10.5281/zenodo.4669084" httpUri="https://zenodo.org/record/4669084/files/figure.png" pageId="39" pageNumber="911">Figures 17d</figureCitation>
|
||
and
|
||
<figureCitation id="47ADE9FBFFFEFFF4FDB7F1A02399FB74" box="[613,663,1208,1232]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">20h</figureCitation>
|
||
). The canal consists of a medial part with a sensory function and a ciliated outer wall that is widened outward forming a sac (
|
||
<figureCitation id="47ADE9FBFFFEFFF4FF40F1E02018FAB4" box="[146,278,1272,1296]" captionStart="Figure 20" captionStartId="38.[125,185,1345,1364]" captionTargetBox="[201,1097,187,1309]" captionTargetId="figure-1@38.[201,1097,187,1309]" captionTargetPageId="38" captionText="Figure 20. Sanjuannemertes aeilloaesi, new genus and species, holotype. (a) Transverse sections between 12 and 97 from anterior end of body, showing posterior portion of right dorsal ganglion, dorsal and lateral blood vessel; (b) cephalic furrow united from dorsal and ventral transverse grooves; (c) short canal of cephalic groove above the dermis; (d) posterior ocelli on cerebral sensory organ; (e) ocelli in the right side of the head and frontal glands; (f) cerebral sensory organ in the right side of the head; (g) cerebral sensory organ in the left side of the head and brain lobes; (h) posterior end of cerebral organ canal widened in its outer portion. Scale 100 mm (a–h). Abbreviations: ad, anterior cephalic groove formed by dorsal and ventral grooves united at mid-lateral portion of head; ao, anterior ocellus; br, brain; cb, cephalic blood vessel; cn, cerebral organ canal; cp, canal of cephalic groove in epidermis; cr, circular muscle layer of rhynchodeum; cv, cephalic nerves; cw, cerebral organ canal widened outward; dg, dorsal ganglion; dr, dermis; dv, dorsal blood vessel; eo, eosinophilic glandular mass; fg, frontal glands; gc, ganglionic mass; lv, lateral blood vessel; ne, nephridia; pn, proboscis nerve; po, posterior ocellus; ps, proboscis sheath; rc, rhynchocoel; rd, rhynchodeum; sa, sensory canal of cerebral sensory organ; st, stomach; vg, ventral ganglion; wa, wall of sensory canal of cerebral sensory organ." figureDoi="http://doi.org/10.5281/zenodo.4669096" httpUri="https://zenodo.org/record/4669096/files/figure.png" pageId="39" pageNumber="911">Figure 20h</figureCitation>
|
||
). A slender nerve from the lateroventral corner of the dorsal ganglion enters the posterior end of the cerebral organ.
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF58F07220F5FA25" blockId="39.[138,507,1385,1409]" box="[138,507,1385,1409]" pageId="39" pageNumber="911">
|
||
<emphasis id="EDE2296CFFFEFFF4FF58F07220F5FA25" box="[138,507,1385,1409]" italics="true" pageId="39" pageNumber="911">Excretory and reproductiυe system</emphasis>
|
||
</paragraph>
|
||
<paragraph id="DF29F57EFFFEFFF4FF58F082258FFA57" blockId="39.[138,1185,1434,1523]" pageId="39" pageNumber="911">The excretory system is weakly developed and quite short in the foregut region. No excretory tubules winding around and along the lateral blood vessels have been observed. The single efferent ducts on each side opens dorsolaterally. The gonads are immature.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |