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<document id="F21EC68B810645354E3BEBF579487521" ID-DOI="10.11646/zootaxa.3888.1.1" ID-ISSN="1175-5326" ID-Zenodo-Dep="10086415" ID-ZooBank="1B437AE1-CF28-4C1B-95B6-C31A295905A0" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1623730057475" checkinUser="felipe" docAuthor="Schwarzhans, Werner" docDate="2014" docId="463A8F36FFF0FFB912979A9BE052FF00" docLanguage="en" docName="zt03888p073.pdf.imf" docOrigin="Zootaxa 3888 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Hymenocephalus semipellucidus Sazonov &amp; Iwamoto 1992" docType="treatment" docVersion="2" lastPageNumber="66" masterDocId="BA03F74EFFB0FFF812009814E16BFFF8" masterDocTitle="Head and otolith morphology of the genera Hymenocephalus, Hymenogadus and Spicomacrurus (Macrouridae), with the description of three new species" masterLastPageNumber="73" masterPageNumber="1" pageNumber="65" updateTime="1699488604623" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-3.0">
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<mods:title id="8D5D677C4AA24FA6F649E42FDEB52A63">Head and otolith morphology of the genera Hymenocephalus, Hymenogadus and Spicomacrurus (Macrouridae), with the description of three new species</mods:title>
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<mods:namePart id="C37DDB917D766AC86CA529EB970210B8">Schwarzhans, Werner</mods:namePart>
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<mods:date id="CC3A9C4DF20C4796FCD374C6DA14E73C">2014</mods:date>
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<mods:number id="788D894BE6A95AFC069EC755CD545AEC">2014-11-28</mods:number>
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<mods:number id="BDE71A745FBA0288CD851BE945985677">3888</mods:number>
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<mods:identifier id="EC26BBE7053E97C5D2B414C3BBEBB464" type="ISSN">1175-5326</mods:identifier>
<mods:identifier id="68A38A9D19E00AF539134CB6E546E81A" type="Zenodo-Dep">10086415</mods:identifier>
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<treatment id="463A8F36FFF0FFB912979A9BE052FF00" LSID="urn:lsid:plazi:treatment:463A8F36FFF0FFB912979A9BE052FF00" httpUri="http://treatment.plazi.org/id/463A8F36FFF0FFB912979A9BE052FF00" lastPageId="65" lastPageNumber="66" pageId="64" pageNumber="65">
<subSubSection id="86896DABFFF0FFB812979A9BE219FD52" box="[151,882,655,682]" pageId="64" pageNumber="65" type="nomenclature">
<paragraph id="CE2C3E20FFF0FFB812979A9BE219FD52" blockId="64.[151,882,655,715]" box="[151,882,655,682]" pageId="64" pageNumber="65">
<heading id="9564894CFFF0FFB812979A9BE219FD52" bold="true" box="[151,882,655,682]" fontSize="11" level="2" pageId="64" pageNumber="65" reason="4">
<taxonomicName id="099345A3FFF0FFB812979A9BE219FD52" ID-CoL="3NJ9P" authority="Sazonov &amp; Iwamoto, 1992" authorityName="Sazonov &amp; Iwamoto" authorityYear="1992" box="[151,882,655,682]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="semipellucidus">
<emphasis id="FCE7E232FFF0FFB812979A9BE219FD52" bold="true" box="[151,882,655,682]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812979A9BE348FD51" bold="true" box="[151,547,655,681]" italics="true" pageId="64" pageNumber="65">Hymenocephalus semipellucidus</emphasis>
<bibRefCitation id="AA0243D1FFF0FFB8102B9A84E219FD52" author="Sazonov, Y. I. &amp; Iwamoto, T." box="[555,882,656,682]" pageId="64" pageNumber="65" pagination="27 - 95" refId="ref51836" refString="Sazonov, Y. I. &amp; Iwamoto, T. (1992) Grenadiers (Pisces, Gadiformes) of the Nazca and Sala y Gomez Ridges, southeastern Pacific. Proceedings of the California Academy of Sciences, 48 (2), 27 - 95." type="journal article" year="1992">Sazonov &amp; Iwamoto, 1992</bibRefCitation>
</emphasis>
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</heading>
</paragraph>
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<subSubSection id="86896DABFFF0FFB812979AA6E039FD33" box="[151,338,690,715]" pageId="64" pageNumber="65" type="description">
<paragraph id="CE2C3E20FFF0FFB812979AA6E039FD33" blockId="64.[151,882,655,715]" box="[151,338,690,715]" pageId="64" pageNumber="65">
<figureCitation id="56A822A5FFF0FFB812979AA6E041FD33" box="[151,298,690,715]" captionStart="FIGURE 35" captionStartId="63.[151,250,1939,1961]" captionTargetBox="[192,1395,1263,1912]" captionTargetId="figure-448@63.[185,1400,1257,1918]" captionTargetPageId="63" captionText="FIGURE 35. A–C: Hymenocephalus neglectissimus: A–C—ZMMGU-P 18221, A—Lateral view of head, B—Dorsal view of head, C—Schematic outline drawing of formalin eroded otolith. D–H: Hymenocephalus semipellucidus, ZMMGU-P 18205: D—Lateral view of head, E—Anterior view of otolith, F, H—Inner faces of otoliths, G—Ventral view of otolith." figureDoi="http://doi.org/10.5281/zenodo.10086489" httpUri="https://zenodo.org/record/10086489/files/figure.png" pageId="64" pageNumber="65">Figs. 35D–H</figureCitation>
,
<figureCitation id="56A822A5FFF0FFB813369AA6E039FD33" box="[310,338,690,715]" captionStart="FIGURE 37" captionStartId="66.[151,250,976,998]" captionTargetBox="[158,1430,272,949]" captionTargetId="figure-236@66.[152,1435,265,954]" captionTargetPageId="66" captionText="FIGURE 37. Geographical distribution of Hymenocephalus aeger, H. megalops, H. striatissimus, H. torvus, H. grimaldii, H. neglectissimus, H. semipellucidus, H. sp. 1 and H." figureDoi="http://doi.org/10.5281/zenodo.10086493" httpUri="https://zenodo.org/record/10086493/files/figure.png" pageId="64" pageNumber="65">37</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="86896DABFFF0FFB812979AEEE574FCB6" pageId="64" pageNumber="65" type="reference_group">
<paragraph id="CE2C3E20FFF0FFB812979AEEE062FCD7" blockId="64.[151,1436,762,846]" pageId="64" pageNumber="65">
<treatmentCitationGroup id="EE83190EFFF0FFB812979AEEE062FCD7" pageId="64" pageNumber="65">
<treatmentCitation id="4F321831FFF0FFB812979AEEE277FCE8" author="Sazonov, Y. I. &amp; Iwamoto, T." box="[151,796,762,784]" page="60" pageId="64" pageNumber="65" year="1992">
<taxonomicName id="099345A3FFF0FFB812979AEEE277FCE8" ID-CoL="3NJ9P" authority="Sazonov &amp; Iwamoto, 1992: 60" authorityName="Sazonov &amp; Iwamoto" authorityPageNumber="60" authorityYear="1992" box="[151,796,762,784]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="semipellucidus">
<emphasis id="FCE7E232FFF0FFB812979AEEE089FCE8" box="[151,482,762,784]" italics="true" pageId="64" pageNumber="65">Hymenocephalus semipellucidus</emphasis>
<bibRefCitation id="AA0243D1FFF0FFB813E79AEEE277FCE8" author="Sazonov, Y. I. &amp; Iwamoto, T." box="[487,796,762,784]" pageId="64" pageNumber="65" pagination="27 - 95" refId="ref51836" refString="Sazonov, Y. I. &amp; Iwamoto, T. (1992) Grenadiers (Pisces, Gadiformes) of the Nazca and Sala y Gomez Ridges, southeastern Pacific. Proceedings of the California Academy of Sciences, 48 (2), 27 - 95." type="journal article" year="1992">Sazonov &amp; Iwamoto, 1992: 60</bibRefCitation>
</taxonomicName>
</treatmentCitation>
(
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locality: Sala y Gomez Ridge, Prof. Shtokman cr. 18, sta. 2019).
</treatmentCitationGroup>
</paragraph>
<paragraph id="CE2C3E20FFF0FFB812979B2CE574FCB6" blockId="64.[151,1436,762,846]" box="[151,1055,824,846]" pageId="64" pageNumber="65">
<treatmentCitationGroup id="EE83190EFFF0FFB812979B2CE574FCB6" box="[151,1055,824,846]" pageId="64" pageNumber="65">
<treatmentCitation id="4F321831FFF0FFB812979B2CE243FCB6" author="Iwamoto, T. &amp; Merrett, N. R." box="[151,808,824,846]" page="523" pageId="64" pageNumber="65" year="1997">
<taxonomicName id="099345A3FFF0FFB812979B2CE243FCB6" ID-CoL="3NJ9P" authority=": Iwamoto &amp; Merrett, 1997: 523" authorityName=": Iwamoto &amp; Merrett" authorityPageNumber="523" authorityYear="1997" box="[151,808,824,846]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="semipellucidus">
<emphasis id="FCE7E232FFF0FFB812979B2CE089FCB6" box="[151,482,824,846]" italics="true" pageId="64" pageNumber="65">Hymenocephalus semipellucidus</emphasis>
:
<bibRefCitation id="AA0243D1FFF0FFB813EF9B2CE243FCB6" author="Iwamoto, T. &amp; Merrett, N. R." box="[495,808,824,846]" pageId="64" pageNumber="65" pagination="473 - 570" refId="ref51103" refString="Iwamoto, T. &amp; Merrett, N. R. (1997) Pisces Gadiformes: Taxonomy of grenadiers of the New Caledonian region, southwest Pacific. Memoires du Museum national d'Histoire naturelle, 176, 473 - 570." type="journal article" year="1997">Iwamoto &amp; Merrett, 1997: 523</bibRefCitation>
</taxonomicName>
</treatmentCitation>
(reference values only).
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="86896DABFFF0FFB812979B6EE44EFC6A" box="[151,1317,890,915]" pageId="64" pageNumber="65" type="materials_examined">
<paragraph id="CE2C3E20FFF0FFB812979B6EE44EFC6A" blockId="64.[151,1437,890,1923]" box="[151,1317,890,915]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812979B6EE0EAFC6B" bold="true" box="[151,385,890,915]" pageId="64" pageNumber="65">Material examined.</emphasis>
<materialsCitation id="7EFB347DFFF0FFB813879B6EE44AFC6A" box="[391,1313,890,915]" collectionCode="ZMMGU" elevation="775" latitude="-25.133333" longLatPrecision="1247" longitude="-99.416664" pageId="64" pageNumber="65" specimenCount="3">
<specimenCount id="D895F5A9FFF0FFB813879B6EE37AFC6B" box="[391,529,890,915]" pageId="64" pageNumber="65" type="generic">3 specimens</specimenCount>
<collectionCode id="A882A6E5FFF0FFB810189B6EE3E8FC6B" box="[536,643,890,915]" country="Russia" httpUri="http://grbio.org/cool/dvrf-d2q9" name="Zoological Museum" pageId="64" pageNumber="65">ZMMGU</collectionCode>
P-18205, 135–
<quantity id="096B93C5FFF0FFB8112F9B6EE2E7FC6A" box="[815,908,890,915]" metricMagnitude="-1" metricUnit="m" metricValue="1.5" pageId="64" pageNumber="65" unit="mm" value="150.0">150 mm</quantity>
TL,
<geoCoordinate id="ABA758E7FFF0FFB811C39B6EE54AFC6B" box="[963,1057,890,915]" degrees="25" direction="south" minutes="08" orientation="latitude" pageId="64" pageNumber="65" precision="925" value="-25.133333">25°08’S</geoCoordinate>
,
<geoCoordinate id="ABA758E7FFF0FFB8162D9B6EE5FFFC6B" box="[1069,1172,890,915]" degrees="99" direction="west" minutes="25" orientation="longitude" pageId="64" pageNumber="65" precision="925" value="-99.416664">99°25’W</geoCoordinate>
,
<quantity id="096B93C5FFF0FFB8169F9B6EE44AFC6A" box="[1183,1313,890,915]" metricMagnitude="2" metricUnit="m" metricValue="7.75" metricValueMax="8.0" metricValueMin="7.5" pageId="64" pageNumber="65" unit="m" value="775.0" valueMax="800.0" valueMin="750.0">
<elevation id="45BED913FFF0FFB8169F9B6EE44AFC6A" box="[1183,1313,890,915]" metricMagnitude="2" metricUnit="m" metricValue="7.75" metricValueMax="8.0" metricValueMin="7.5" pageId="64" pageNumber="65" unit="m" value="775.0" valueMax="800.0" valueMin="750.0">
750–
<specimenCount id="D895F5A9FFF0FFB816D89B6EE44AFC6A" box="[1240,1313,890,915]" pageId="64" pageNumber="65" type="generic">800 m</specimenCount>
</elevation>
</quantity>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="86896DABFFF0FFB812C79B8AE5CFFA9F" pageId="64" pageNumber="65" type="diagnosis">
<paragraph id="CE2C3E20FFF0FFB812C79B8AE2CDFB93" blockId="64.[151,1437,890,1923]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812C79B8AE051FC4F" bold="true" box="[199,314,926,951]" pageId="64" pageNumber="65">Diagnosis</emphasis>
(after Sazonov &amp; Iwamoto with additions). Pelvic fin rays 8; pectoral fin rays 15–19; gill rakers 15–20. Barbel short, 10–17% HL. Black blotch on dorsum long, with eroded outline. Orbit very large, 40–46% HL (43–50% HL along the longest diameter), slightly oblique. Snout rounded, very slightly protruding, 15–20% HL. Ventral striae extending to about ½ the distance from pelvic fin bases to periproct. Infraorbital width 9–11% HL. Otolith compressed with triangular shaped, not very high, pointed predorsal lobe, OL:OH = 0.8–0.9; colliculi fused, narrowed; pseudocolliculum very long, TCL:PCL = 1.25–1.35.
</paragraph>
<paragraph id="CE2C3E20FFF0FFB812C79C62E5CFFA9F" blockId="64.[151,1437,890,1923]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812C79C62E009FB77" bold="true" box="[199,354,1142,1167]" pageId="64" pageNumber="65">Comparison.</emphasis>
<bibRefCitation id="AA0243D1FFF0FFB8136A9C62E3C3FB77" author="Sazonov, Y. I. &amp; Iwamoto, T." box="[362,680,1142,1167]" pageId="64" pageNumber="65" pagination="27 - 95" refId="ref51836" refString="Sazonov, Y. I. &amp; Iwamoto, T. (1992) Grenadiers (Pisces, Gadiformes) of the Nazca and Sala y Gomez Ridges, southeastern Pacific. Proceedings of the California Academy of Sciences, 48 (2), 27 - 95." type="journal article" year="1992">Sazonov &amp; Iwamoto (1992)</bibRefCitation>
distinguished
<taxonomicName id="099345A3FFF0FFB8114F9C63E572FB77" authorityName=": Iwamoto &amp; Merrett" authorityYear="1997" box="[847,1049,1142,1167]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="semipellucidus">
<emphasis id="FCE7E232FFF0FFB8114F9C63E572FB77" box="[847,1049,1142,1167]" italics="true" pageId="64" pageNumber="65">H. semipellucidus</emphasis>
</taxonomicName>
from
<taxonomicName id="099345A3FFF0FFB816619C63E443FB77" authorityName=": Iwamoto &amp; Merrett" authorityYear="1997" box="[1121,1320,1142,1167]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="neglectissimus">
<emphasis id="FCE7E232FFF0FFB816619C63E443FB77" box="[1121,1320,1142,1167]" italics="true" pageId="64" pageNumber="65">H. neglectissimus</emphasis>
</taxonomicName>
by a long black blotch on the dorsum (vs short and clear cut), shorter barbel, the higher number of pectoral rays (15–19 vs 13–16), the larger infraorbital width (9–11% HL vs 5–8% HL) and the slightly smaller orbit. It differs from
<emphasis id="FCE7E232FFF0FFB817819CABE012FB03" italics="true" pageId="64" pageNumber="65">
<taxonomicName id="099345A3FFF0FFB817819CABE1BCFB02" authorityName="Gilbert &amp; Hubbs" authorityYear="1920" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="aeger">H. aeger</taxonomicName>
,
<taxonomicName id="099345A3FFF0FFB812E79CF7E012FB03" authorityName=": Merrett &amp; Iwamoto" authorityYear="2000" box="[231,377,1250,1275]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="megalops">H. megalops</taxonomicName>
</emphasis>
and
<taxonomicName id="099345A3FFF0FFB813BB9CF7E342FB02" authorityName=": Iwamoto &amp; McCosker" authorityYear="2014" box="[443,553,1251,1274]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="torvus">
<emphasis id="FCE7E232FFF0FFB813BB9CF7E342FB02" box="[443,553,1251,1274]" italics="true" pageId="64" pageNumber="65">H. torvus</emphasis>
</taxonomicName>
in the higher pectoral fin ray count (15–19 vs. 13–15, 14–16 and 12–14, respectively) and from
<emphasis id="FCE7E232FFF0FFB8139F9D13E3AAFAE6" box="[415,705,1287,1310]" italics="true" pageId="64" pageNumber="65">
<taxonomicName id="099345A3FFF0FFB8139F9D13E369FAE6" authorityName="Gilbert &amp; Hubbs" authorityYear="1920" box="[415,514,1287,1310]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="aeger">H. aeger</taxonomicName>
,
<taxonomicName id="099345A3FFF0FFB8100F9D13E3AAFAE6" authorityName=": Weber" authorityYear="1913" box="[527,705,1287,1310]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="striatissimus">H. striatissimus</taxonomicName>
</emphasis>
and
<taxonomicName id="099345A3FFF0FFB810FA9D13E208FAE6" authorityName=": Iwamoto &amp; McCosker" authorityYear="2014" box="[762,867,1287,1310]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="torvus">
<emphasis id="FCE7E232FFF0FFB810FA9D13E208FAE6" box="[762,867,1287,1310]" italics="true" pageId="64" pageNumber="65">H. torvus</emphasis>
</taxonomicName>
in the larger orbit (40–46% HL vs. 35–42% HL). An additional character to faultlessly distinguish
<taxonomicName id="099345A3FFF0FFB810C79D3FE2F9FABB" authorityName=": Iwamoto &amp; Merrett" authorityYear="1997" box="[711,914,1322,1347]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="semipellucidus">
<emphasis id="FCE7E232FFF0FFB810C79D3FE2F9FABB" box="[711,914,1322,1347]" italics="true" pageId="64" pageNumber="65">H. semipellucidus</emphasis>
</taxonomicName>
from all species of the
<taxonomicName id="099345A3FFF0FFB816A39D3FE45AFABA" authorityName=": Weber" authorityYear="1913" box="[1187,1329,1323,1346]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="striatissimus">
<emphasis id="FCE7E232FFF0FFB816A39D3FE45AFABA" box="[1187,1329,1323,1346]" italics="true" pageId="64" pageNumber="65">striatissimus</emphasis>
</taxonomicName>
Group is the outline of the otolith, with its less pronounced, triangular-shaped, pointed predorsal lobe.
</paragraph>
</subSubSection>
<subSubSection id="86896DABFFF0FFB812C79D66E509F8A7" pageId="64" pageNumber="65" type="description">
<paragraph id="CE2C3E20FFF0FFB812C79D66E04BF99B" blockId="64.[151,1437,890,1923]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812C79D66E033FA73" bold="true" box="[199,344,1394,1419]" pageId="64" pageNumber="65">Description.</emphasis>
Head morphology (n = 1) (
<figureCitation id="56A822A5FFF0FFB810B59D66E24EFA73" box="[693,805,1394,1419]" captionStart="FIGURE 35" captionStartId="63.[151,250,1939,1961]" captionTargetBox="[192,1395,1263,1912]" captionTargetId="figure-448@63.[185,1400,1257,1918]" captionTargetPageId="63" captionText="FIGURE 35. A–C: Hymenocephalus neglectissimus: A–C—ZMMGU-P 18221, A—Lateral view of head, B—Dorsal view of head, C—Schematic outline drawing of formalin eroded otolith. D–H: Hymenocephalus semipellucidus, ZMMGU-P 18205: D—Lateral view of head, E—Anterior view of otolith, F, H—Inner faces of otoliths, G—Ventral view of otolith." figureDoi="http://doi.org/10.5281/zenodo.10086489" httpUri="https://zenodo.org/record/10086489/files/figure.png" pageId="64" pageNumber="65">Fig. 35D</figureCitation>
): Snout short, slightly projecting, 15–20% HL, orbit diameter very large, 40–46% HL, 43–50% HL along the longest diameter, slightly obliquely oriented, interorbital width about 50–60% HW. Barbel, 10–17% HL (up to 22% HL according to Sazonov &amp; Iwamoto). Head canals well developed, infraorbital width 9–11% HL, supraorbital canal with 4 segments, width 8% HL, supratemporal canal not identified, preopercular canal width 12% HL, postorbital-preopercular interspace 5% HL. Infranasal supporter short; infraorbital moderately long, narrow, 65% OD; preopercular supporter short, 5% HL, with straight rear margin.
</paragraph>
<paragraph id="CE2C3E20FFF0FFB812C79E7AE509F8A7" blockId="64.[151,1437,890,1923]" pageId="64" pageNumber="65">
Otolith morphology (n = 2) (
<figureCitation id="56A822A5FFF0FFB810179E7AE3C8F97F" box="[535,675,1646,1671]" captionStart="FIGURE 35" captionStartId="63.[151,250,1939,1961]" captionTargetBox="[192,1395,1263,1912]" captionTargetId="figure-448@63.[185,1400,1257,1918]" captionTargetPageId="63" captionText="FIGURE 35. A–C: Hymenocephalus neglectissimus: A–C—ZMMGU-P 18221, A—Lateral view of head, B—Dorsal view of head, C—Schematic outline drawing of formalin eroded otolith. D–H: Hymenocephalus semipellucidus, ZMMGU-P 18205: D—Lateral view of head, E—Anterior view of otolith, F, H—Inner faces of otoliths, G—Ventral view of otolith." figureDoi="http://doi.org/10.5281/zenodo.10086489" httpUri="https://zenodo.org/record/10086489/files/figure.png" pageId="64" pageNumber="65">Fig. 35E–H</figureCitation>
): Otolith large; OL:OH = 0.8–0.9; OH:OT = 3.2. Dorsal rim with rather short, broad, triangular shaped, pointed, smooth predorsal lobe, distally without marked indentation; posterior tip broadly rounded; ventral rim deep, regularly curved, smooth, deepest anterior of the middle; anterior rim high, subvertical vertical, slightly bent. Inner face slightly convex, with slightly supramedian sulcus. Colliculi completely fused, terminating far from anterior and posterior tips of otolith, dorsally reduced and rather narrow, leaving depressed sulcus space without collicular filling above; pseudocolliculum very long. TCL:PCL = 1.25–1.35. No dorsal depression; ventral furrow narrow, close to ventral rim of otolith.
</paragraph>
</subSubSection>
<subSubSection id="86896DABFFF0FFB912C79F7EE052FF00" lastPageId="65" lastPageNumber="66" pageId="64" pageNumber="65" type="distribution">
<paragraph id="CE2C3E20FFF0FFB812C79F7EE456F87B" blockId="64.[151,1437,890,1923]" box="[199,1341,1898,1923]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812C79F7EE032F87B" bold="true" box="[199,345,1898,1923]" pageId="64" pageNumber="65">Distribution</emphasis>
(
<figureCitation id="56A822A5FFF0FFB813689F7EE0D7F87B" box="[360,444,1898,1923]" captionStart="FIGURE 37" captionStartId="66.[151,250,976,998]" captionTargetBox="[158,1430,272,949]" captionTargetId="figure-236@66.[152,1435,265,954]" captionTargetPageId="66" captionText="FIGURE 37. Geographical distribution of Hymenocephalus aeger, H. megalops, H. striatissimus, H. torvus, H. grimaldii, H. neglectissimus, H. semipellucidus, H. sp. 1 and H." figureDoi="http://doi.org/10.5281/zenodo.10086493" httpUri="https://zenodo.org/record/10086493/files/figure.png" pageId="64" pageNumber="65">Fig. 37</figureCitation>
).
<taxonomicName id="099345A3FFF0FFB813D09F7EE257F87B" authorityName=": Iwamoto &amp; Merrett" authorityYear="1997" box="[464,828,1898,1923]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="64" pageNumber="65" phylum="Chordata" rank="species" species="neglectissimus">
<emphasis id="FCE7E232FFF0FFB813D09F7EE257F87B" box="[464,828,1898,1923]" italics="true" pageId="64" pageNumber="65">Hymenocephalus neglectissimus</emphasis>
</taxonomicName>
is only known from the Sala y Gomez Ridge.
</paragraph>
<paragraph id="CE2C3E20FFF0FFB812979FA7E0CCF835" blockId="64.[151,1437,1971,2030]" box="[151,423,1971,1997]" pageId="64" pageNumber="65">
<emphasis id="FCE7E232FFF0FFB812979FA7E0CCF835" bold="true" box="[151,423,1971,1997]" pageId="64" pageNumber="65">Unidentifiable species</emphasis>
</paragraph>
<paragraph id="CE2C3E20FFF0FFB812979FC1E4F6F815" blockId="64.[151,1437,1971,2030]" box="[151,1437,2005,2030]" pageId="64" pageNumber="65">During the examination of the material, otoliths were extracted from two poorly preserved specimens, which seem</paragraph>
<paragraph id="CE2C3E20FFF1FFB91297988CE052FF00" blockId="65.[151,1436,151,248]" pageId="65" pageNumber="66">
to represent two possibly undescribed species of the genus
<taxonomicName id="099345A3FFF1FFB9115C9883E576FF48" authorityName="Giglioli" authorityYear="1884" box="[860,1053,151,176]" class="Actinopterygii" family="Macrouridae" genus="Hymenocephalus" kingdom="Animalia" order="Gadiformes" pageId="65" pageNumber="66" phylum="Chordata" rank="genus">
<emphasis id="FCE7E232FFF1FFB9115C9883E576FF48" box="[860,1053,151,176]" italics="true" pageId="65" pageNumber="66">Hymenocephalus</emphasis>
</taxonomicName>
. The fish bodies are too poorly preserved to warrant any further description, let alone identification, but the otoliths are briefly described and figured below.
</paragraph>
</subSubSection>
</treatment>
</document>
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