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<document id="5EB35044EC09CCB862C46D941F4BEDFE" ID-DOI="10.11646/zootaxa.3925.3.4" ID-GBIF-Dataset="9cef1bf3-1491-424d-bd24-02bbe81411e5" ID-ISSN="1175-5326" ID-Zenodo-Dep="236318" ID-ZooBank="8CA0F940-B481-4D02-AC6E-B254AE4EF986" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461003698686" checkinUser="plazi" docAuthor="Choong, Henry H. C." docDate="2015" docId="53008A042F0DAF78FF29FAFA42C7FCD7" docLanguage="en" docName="zt03925p408.pdf" docOrigin="Zootaxa 3925 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Sertularella sacciformis Choong, 2015, sp. nov." docType="treatment" docVersion="9" lastPageNumber="404" masterDocId="AF39F27C2F02AF69FFBEFF834232FFC2" masterDocTitle="Hydroids of the genus Sertularella (Cnidaria: Hydrozoa: Sertulariidae) from the Pacific coast of Canada in the collection of the Royal Ontario Museum, with descriptions of four new species" masterLastPageNumber="408" masterPageNumber="387" pageNumber="402" updateTime="1698565170848" updateUser="plazi">
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<mods:title id="142133C7A2EC07DB6B46ECF53AD1B80A">Hydroids of the genus Sertularella (Cnidaria: Hydrozoa: Sertulariidae) from the Pacific coast of Canada in the collection of the Royal Ontario Museum, with descriptions of four new species</mods:title>
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<mods:name id="CB702E3F6DD1F5DEF48EE0920A941498" type="personal">
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<mods:namePart id="650147501E041FAED158562B697424BF">Choong, Henry H. C.</mods:namePart>
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<mods:title id="B28BC9A4561848ADF7C56CD4ACD4E8D7">Zootaxa</mods:title>
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<mods:date id="CF923B73C891C518DA6EADB0D95B24A3">2015</mods:date>
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<mods:identifier id="23E18762D6F7D13A41589FF9810C35DD" type="DOI">10.11646/zootaxa.3925.3.4</mods:identifier>
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<treatment id="53008A042F0DAF78FF29FAFA42C7FCD7" ID-DOI="http://doi.org/10.5281/zenodo.6093742" ID-GBIF-Taxon="119598788" ID-Zenodo-Dep="6093742" LSID="urn:lsid:plazi:treatment:53008A042F0DAF78FF29FAFA42C7FCD7" httpUri="http://treatment.plazi.org/id/53008A042F0DAF78FF29FAFA42C7FCD7" lastPageId="17" lastPageNumber="404" pageId="15" pageNumber="402">
<subSubSection id="93B368992F0DAF66FF29FAFA433AFA76" pageId="15" pageNumber="402" type="nomenclature">
<paragraph id="DB163B122F0DAF66FF29FAFA402FFA51" blockId="15.[151,541,1401,1461]" box="[151,541,1401,1427]" pageId="15" pageNumber="402">
<heading id="805E8C7E2F0DAF66FF29FAFA402FFA51" bold="true" box="[151,541,1401,1427]" fontSize="11" level="1" pageId="15" pageNumber="402" reason="1">
<emphasis id="E9DDE7002F0DAF66FF29FAFA402FFA51" bold="true" box="[151,541,1401,1427]" pageId="15" pageNumber="402">
<taxonomicName id="1CA940912F0DAF66FF29FAFA4385FA51" box="[151,439,1401,1427]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="402" phylum="Cnidaria" rank="species" species="sacciformis" status="sp. nov.">
<emphasis id="E9DDE7002F0DAF66FF29FAFA4385FA51" bold="true" box="[151,439,1401,1427]" italics="true" pageId="15" pageNumber="402">Sertularella sacciformis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="F2EE5A7B2F0DAF66FE01FAFA402FFA51" box="[447,541,1401,1427]" pageId="15" pageNumber="402" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="DB163B122F0DAF66FF29FA1F433AFA76" blockId="15.[151,541,1401,1461]" box="[151,264,1436,1461]" pageId="15" pageNumber="402">
(
<figureCitation id="439227972F0DAF66FF20FA1F42CCFA76" box="[158,254,1436,1461]" captionStart="FIGURE 7" captionStartId="16.[151,250,1971,1993]" captionTargetBox="[233,1351,351,1946]" captionTargetId="figure@16.[220,1367,337,1962]" captionTargetPageId="16" captionText="FIGURE 7. Sertularella sacciformis sp. nov., ROMIZ B 2341: (A) Hydrothecae and internode showing spiral twists; (B) Detail of hydrotheca; (C) Hydrocaulus section showing ramification and axillary hydrothecae. Scale bars equal 1.0 mm." httpUri="https://zenodo.org/record/236324/files/figure.png" pageId="15" pageNumber="402">Figure 7</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="93B368992F0DAF66FF29FA6742D9F96D" pageId="15" pageNumber="402" type="materials_examined">
<paragraph id="DB163B122F0DAF66FF29FA674675F9AA" blockId="15.[151,1437,1508,2037]" pageId="15" pageNumber="402">
<emphasis id="E9DDE7002F0DAF66FF29FA6742CDFA3F" bold="true" box="[151,255,1508,1533]" pageId="15" pageNumber="402">Material</emphasis>
.
<emphasis id="E9DDE7002F0DAF66FEB1FA6743B7FA3F" bold="true" box="[271,389,1508,1533]" pageId="15" pageNumber="402">
<typeStatus id="041285B02F0DAF66FEB1FA6743B2FA3F" box="[271,384,1508,1533]" pageId="15" pageNumber="402" type="holotype">Holotype</typeStatus>
:
</emphasis>
<collectingCountry id="A3BE7B822F0DAF66FE31FA674039FA3E" box="[399,523,1508,1532]" name="Canada" pageId="15" pageNumber="402">CANADA</collectingCountry>
: British
<collectingCountry id="A3BE7B822F0DAF66FDD0FA6740D2FA3F" box="[622,736,1508,1533]" name="United States of America" pageId="15" pageNumber="402">Columbia</collectingCountry>
. Hecate Strait, Gwaii Haanas National Marine Park Reserve, 53˚32’48”N, 131˚19’30”W,
<date id="AF171DD22F0DAF66FE57F9844046F9E2" box="[489,628,1543,1568]" pageId="15" pageNumber="402" value="1985-09-26">26. ix.1985</date>
, 26 meters, coll. R.O. Brinckhurst, hydrocaulus section, without gonothecae,
<collectionCode id="BDB8A3D72F0DAF66FE9AF9AF434CF986" box="[292,382,1580,1604]" pageId="15" pageNumber="402">ROMIZ</collectionCode>
B2341.
<emphasis id="E9DDE7002F0DAF66FE62F9AF4060F987" bold="true" box="[476,594,1580,1605]" pageId="15" pageNumber="402">
<typeStatus id="041285B02F0DAF66FE62F9AF407FF987" box="[476,589,1580,1605]" pageId="15" pageNumber="402" type="paratype">Paratype</typeStatus>
:
</emphasis>
<collectingCountry id="A3BE7B822F0DAF66FDE7F9AF40E7F986" box="[601,725,1580,1604]" name="Canada" pageId="15" pageNumber="402">CANADA</collectingCountry>
: British
<collectingCountry id="A3BE7B822F0DAF66FC8FF9AF4191F987" box="[817,931,1580,1605]" name="United States of America" pageId="15" pageNumber="402">Columbia</collectingCountry>
. 54˚13’00”N, 132˚09’00”W,
<date id="AF171DD22F0DAF66FB56F9AF4753F987" box="[1256,1377,1580,1605]" pageId="15" pageNumber="402" value="1961-04-29">29.iv.1961</date>
, 98.8 meters, coll. D.B. Quayle, hydrocauli sections, without gonothecae,
<collectionCode id="BDB8A3D72F0DAF66FC2AF9D341DCF9AA" box="[916,1006,1616,1640]" pageId="15" pageNumber="402">ROMIZ</collectionCode>
B4070.
</paragraph>
<paragraph id="DB163B122F0DAF66FF79F9F742D9F96D" blockId="15.[151,1437,1508,2037]" pageId="15" pageNumber="402">
<emphasis id="E9DDE7002F0DAF66FF79F9F743F9F94F" bold="true" box="[199,459,1652,1677]" pageId="15" pageNumber="402">Reported distribution</emphasis>
.
<collectingCountry id="A3BE7B822F0DAF66FE65F9F74065F94E" box="[475,599,1652,1676]" name="Canada" pageId="15" pageNumber="402">CANADA</collectingCountry>
: British
<collectingCountry id="A3BE7B822F0DAF66FD08F9F74115F94F" box="[694,807,1652,1677]" name="United States of America" pageId="15" pageNumber="402">Columbia</collectingCountry>
, Vancouver island, off Clayoquot Sound as
<taxonomicName id="1CA940912F0DAF66FAA9F9F742D7F972" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="402" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F0DAF66FAA9F9F742D7F972" italics="true" pageId="15" pageNumber="402">Sertularella rugosa</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="93B368992F0DAF78FF79F93F43DEFD0E" lastPageId="17" lastPageNumber="404" pageId="15" pageNumber="402" type="description">
<paragraph id="DB163B122F0DAF79FF79F93F4013FEDF" blockId="15.[151,1437,1508,2037]" lastBlockId="16.[151,1436,151,285]" lastPageId="16" lastPageNumber="403" pageId="15" pageNumber="402">
<emphasis id="E9DDE7002F0DAF66FF79F93F4363F917" bold="true" box="[199,337,1724,1749]" pageId="15" pageNumber="402">Description</emphasis>
. Hydrocaulus flexuous, stem geniculate; axis divided into internodes. Perisarc thin throughout. If present, ramifications arise from axis directly under axillary hydrotheca on same plane or angled perpendicularly. Ramification structure same as axis. Beginning of internode marked with two or three well-marked, oblique annular constrictions of perisarc. Internode segments narrowed basally, widening distally. Hydrothecae alternate, distant, one per internode on upper part, on same plane or slightly inclined, following ramification orientation; shape distinctly saccate basally, narrow distally. Saccate shape asymmetrical, adcauline side prominently protuberant. Adcauline wall approximately ¼ adnate, basal part of free portion fairly straight or moderately concavo-convex, distally inclined towards adcauline side. Distal portion of adcauline wall also slightly inclined outwards, forming slight concavity. Hydrothecae strongly annulated basally; apex of 3–4 annulations forming ribs or uneven, crested folds, widening towards adcauline side. Distal part of hydrothecae smooth, giving appearance of cylindrical neck, widening basally. Opercular opening rectangular, embayments shallow but flared, meeting to form four prominent cusps. Operculum of four triangular flaps, forming a low peak when closed. Intrathecal cusps not present. Gonothecae not found.
</paragraph>
<caption id="8FD66B9A2F12AF79FF29F8304720F82A" httpUri="https://zenodo.org/record/236324/files/figure.png" pageId="16" pageNumber="403" targetBox="[233,1351,351,1946]" targetPageId="16">
<paragraph id="DB163B122F12AF79FF29F8304720F82A" blockId="16.[151,1436,1971,2024]" pageId="16" pageNumber="403">
<emphasis id="E9DDE7002F12AF79FF29F8304320F80A" bold="true" box="[151,274,1971,1993]" pageId="16" pageNumber="403">FIGURE 7.</emphasis>
<taxonomicName id="1CA940912F12AF79FEA6F8304039F80B" box="[280,523,1971,1993]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="16" pageNumber="403" phylum="Cnidaria" rank="species" species="sacciformis" status="sp. nov.">
<emphasis id="E9DDE7002F12AF79FEA6F8304039F80B" box="[280,523,1971,1993]" italics="true" pageId="16" pageNumber="403">Sertularella sacciformis</emphasis>
</taxonomicName>
<emphasis id="E9DDE7002F12AF79FDAEF8304052F80A" bold="true" box="[528,608,1971,1992]" pageId="16" pageNumber="403">
<taxonomicNameLabel id="F2EE5A7B2F12AF79FDAEF8304052F80A" box="[528,608,1971,1992]" pageId="16" pageNumber="403" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, ROMIZ B2341: (A) Hydrothecae and internode showing spiral twists; (B) Detail of hydrotheca; (C) Hydrocaulus section showing ramification and axillary hydrothecae. Scale bars equal 1.0 mm.
</paragraph>
</caption>
<paragraph id="DB163B122F13AF78FF79FF1443DEFD0E" blockId="17.[151,1436,151,789]" pageId="17" pageNumber="404">
<emphasis id="E9DDE7002F13AF78FF79FF1443FDFF72" bold="true" box="[199,463,151,176]" pageId="17" pageNumber="404">Differential diagnosis</emphasis>
. Due to the occasionally acute angle of the outward bend, the square-shaped hydrothecal aperture, and the general rugosity of the perisarc, the hydrothecae of
<taxonomicName id="1CA940912F13AF78FBE7FF3F4758FF16" box="[1113,1386,188,212]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FBE7FF3F4758FF16" box="[1113,1386,188,212]" italics="true" pageId="17" pageNumber="404">Sertularella sacciformis</emphasis>
</taxonomicName>
can resemble those of
<taxonomicName id="1CA940912F13AF78FED8FF6340A8FF3A" authority="Linnaeus, 1758" authorityName="Linnaeus" authorityYear="1758" box="[358,666,223,248]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FED8FF6343E0FF3A" box="[358,466,224,248]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
(
<bibRefCitation id="BF3846E32F13AF78FE5FFF5C40A0FF3A" author="Linnaeus" box="[481,658,223,248]" pageId="17" pageNumber="404" refString="Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundum classes, ordines, genera, species cum characteribus, differentiis, synonymis, locis. Editio decima, reformata. Laurentii Salvii, Holmiae, 823 pp." type="book" year="1758">Linnaeus, 1758</bibRefCitation>
)
</taxonomicName>
or
<taxonomicName id="1CA940912F13AF78FD7FFF634118FF3A" box="[705,810,224,248]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="tenella">
<emphasis id="E9DDE7002F13AF78FD7FFF634118FF3A" box="[705,810,224,248]" italics="true" pageId="17" pageNumber="404">S. tenella</emphasis>
</taxonomicName>
. ROMIZ B2341 was originally identified as
<taxonomicName id="1CA940912F13AF78FA94FF6347A7FF3A" box="[1322,1429,224,248]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FA94FF6347A7FF3A" box="[1322,1429,224,248]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
, but
<taxonomicName id="1CA940912F13AF78FF7FFE874319FEDE" box="[193,299,260,284]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FF7FFE874319FEDE" box="[193,299,260,284]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
lacks the smooth hydrothecal neck found in
<taxonomicName id="1CA940912F13AF78FCA1FE874189FEDE" box="[799,955,260,284]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FCA1FE874189FEDE" box="[799,955,260,284]" italics="true" pageId="17" pageNumber="404">S. sacciformis</emphasis>
</taxonomicName>
. The absence or presence of a notch below the rim on the abcauline wall of the hydrotheca as seen from the side is considered to be a diagnostic feature separating
<taxonomicName id="1CA940912F13AF78FEA8FECF43B4FEA6" box="[278,390,332,356]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FEA8FECF43B4FEA6" box="[278,390,332,356]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
from its congeners, although its systematic value has been questioned by some authors (
<bibRefCitation id="BF3846E32F13AF78FF20FEEC4364FE4A" author="Cornelius" box="[158,342,367,392]" pageId="17" pageNumber="404" refString="Cornelius, P. F. S. (1979) A revision of the species of Sertulariidae (Coelenterata: Hydroida) recorded from Britain and nearby seas. Bulletin of the British Museum (Natural History), Zoology, 34, 243 - 321." type="journal article" year="1979">Cornelius 1979</bibRefCitation>
,
<bibRefCitation id="BF3846E32F13AF78FED7FEEC4396FE4A" author="Cornelius" box="[361,420,367,392]" pageId="17" pageNumber="404" refString="Cornelius, P. F. S. (1995) North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Synopses of the British Fauna, New Series, 50, 1 - 386." type="journal article" year="1995">1995</bibRefCitation>
;
<bibRefCitation id="BF3846E32F13AF78FE09FEEC4043FE4A" author="Schuchert" box="[439,625,367,392]" pageId="17" pageNumber="404" refString="Schuchert, P. (2001) Hydroids of Greenland and Iceland (Cnidaria, Hydrozoa). Meddelelser om Gronland, Bioscience, 53, 1 - 184." type="journal article" year="2001">Schuchert 2001</bibRefCitation>
). Nevertheless, in
<taxonomicName id="1CA940912F13AF78FCEBFEF341C8FE4A" box="[853,1018,368,392]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FCEBFEF341C8FE4A" box="[853,1018,368,392]" italics="true" pageId="17" pageNumber="404">S. sacciformis</emphasis>
</taxonomicName>
this notch is absent, although the appearance of a notch is occasionally approximated by the abcauline incline of the hydrothecal neck and the tumidity of the basal portion. This gives appearance of a notch, but the area below the hydrothecal rim is actually straight. In
<taxonomicName id="1CA940912F13AF78FEA7FE5F43B0FE36" box="[281,386,476,500]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="tenella">
<emphasis id="E9DDE7002F13AF78FEA7FE5F43B0FE36" box="[281,386,476,500]" italics="true" pageId="17" pageNumber="404">S. tenella</emphasis>
</taxonomicName>
, the hydrotheca resembles a broad-necked bottle, rather than the saccate, bent-neck shape of
<taxonomicName id="1CA940912F13AF78FF29FD834306FDDA" box="[151,308,512,536]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FF29FD834306FDDA" box="[151,308,512,536]" italics="true" pageId="17" pageNumber="404">S. sacciformis</emphasis>
</taxonomicName>
. The nature of the rugosity is also different in all three species. In
<taxonomicName id="1CA940912F13AF78FBA4FD8346B6FDDA" box="[1050,1156,512,536]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FBA4FD8346B6FDDA" box="[1050,1156,512,536]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
the encircling transverse ridges are sharp, forming deep furrows, which are especially marked on the abcauline side; in
<taxonomicName id="1CA940912F13AF78FB00FDA74715FDFE" box="[1214,1319,548,572]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="tenella">
<emphasis id="E9DDE7002F13AF78FB00FDA74715FDFE" box="[1214,1319,548,572]" italics="true" pageId="17" pageNumber="404">S. tenella</emphasis>
</taxonomicName>
, the sharp ridges which encircle the hydrotheca appear more evenly spaced, but in
<taxonomicName id="1CA940912F13AF78FC7AFDCB4650FDA2" box="[964,1122,584,608]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FC7AFDCB4650FDA2" box="[964,1122,584,608]" italics="true" pageId="17" pageNumber="404">S. sacciformis</emphasis>
</taxonomicName>
, the annular segments form uneven, crested folds, widening towards the adcauline side. Moreover, in
<taxonomicName id="1CA940912F13AF78FC62FDEF467AFD46" box="[988,1096,620,644]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FC62FDEF467AFD46" box="[988,1096,620,644]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
the colony tends to be poorly ramified on a single plane (Naumov 1969). In
<taxonomicName id="1CA940912F13AF78FD13FD13417EFD6A" box="[685,844,656,680]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="sacciformis">
<emphasis id="E9DDE7002F13AF78FD13FD13417EFD6A" box="[685,844,656,680]" italics="true" pageId="17" pageNumber="404">S. sacciformis</emphasis>
</taxonomicName>
, the stem is slender, and the hydrothecae are not as closely spaced as in
<taxonomicName id="1CA940912F13AF78FEC5FD3743D7FD0E" box="[379,485,692,716]" class="Hydrozoa" family="Sertulariidae" genus="Sertularella" kingdom="Animalia" order="Leptothecata" pageId="17" pageNumber="404" phylum="Cnidaria" rank="species" species="rugosa">
<emphasis id="E9DDE7002F13AF78FEC5FD3743D7FD0E" box="[379,485,692,716]" italics="true" pageId="17" pageNumber="404">S. rugosa</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="93B368992F13AF78FF79FD5442C7FCD7" pageId="17" pageNumber="404" type="etymology">
<paragraph id="DB163B122F13AF78FF79FD5442C7FCD7" blockId="17.[151,1436,151,789]" pageId="17" pageNumber="404">
<emphasis id="E9DDE7002F13AF78FF79FD544374FD32" bold="true" box="[199,326,727,752]" pageId="17" pageNumber="404">Etymology</emphasis>
. The species name refers to the shape of the hydrothecae, from the Latin
<emphasis id="E9DDE7002F13AF78FB28FD5A46D3FD32" box="[1174,1249,729,752]" italics="true" pageId="17" pageNumber="404">saccus</emphasis>
(sack or pouchshaped).
</paragraph>
</subSubSection>
</treatment>
</document>
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