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<document id="5C8FDDFAD834FA00B0EDEB7A29AC3DC1" ID-DOI="10.11646/zootaxa.3710.3.5" ID-GBIF-Dataset="2f400e1e-e59e-480d-bd7f-edf4d7024f41" ID-ISSN="1175-5326" ID-Zenodo-Dep="220154" ID-ZooBank="E2A28D6C-42A9-4A09-B299-7C98E2045B47" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460676584558" checkinUser="plazi" docAuthor="Morassi, Mauro &amp; Bonfitto, Antonio" docDate="2013" docId="03BE5F1CFFEEFFE9FF74FDB9C916F86F" docLanguage="en" docName="zt03710p280.pdf" docOrigin="Zootaxa 3710 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Iredalea adenensis Morassi &amp; Bonfitto, 2013, sp. nov." docType="treatment" docVersion="8" lastPageNumber="274" masterDocId="FF872764FFEDFFEAFFE3FFB9CD5DFFFC" masterDocTitle="Four new African turriform gastropods (Mollusca: Conoidea)" masterLastPageNumber="280" masterPageNumber="271" pageNumber="274" updateTime="1698349893659" updateUser="plazi">
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<mods:title id="0BFEA330AB88560CD16590C803F8366C">Four new African turriform gastropods (Mollusca: Conoidea)</mods:title>
</mods:titleInfo>
<mods:name id="84FA1E9DFB9CC788B1F8B1E93619244D" type="personal">
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<mods:namePart id="6A8DF5C9B99E22ABF0B1E7C7789CDE2F">Morassi, Mauro</mods:namePart>
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<mods:namePart id="8A7FA1595972C1D55F8DFE5D533F847D">Bonfitto, Antonio</mods:namePart>
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<mods:title id="6FE113420DE3566A86A20D5D57215C25">Zootaxa</mods:title>
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<mods:date id="EA50B040FED26F07804698635541D5FC">2013</mods:date>
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<mods:number id="EE185033640AA258B592A0EC642F6A6C">3710</mods:number>
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<mods:identifier id="925C5CC90080B11256857C7A39994553" type="DOI">10.11646/zootaxa.3710.3.5</mods:identifier>
<mods:identifier id="0F17FD8699174333AC0216A40ACBAF0D" type="GBIF-Dataset">2f400e1e-e59e-480d-bd7f-edf4d7024f41</mods:identifier>
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<treatment id="03BE5F1CFFEEFFE9FF74FDB9C916F86F" ID-DOI="http://doi.org/10.5281/zenodo.6161113" ID-GBIF-Taxon="119577140" ID-Zenodo-Dep="6161113" LSID="urn:lsid:plazi:treatment:03BE5F1CFFEEFFE9FF74FDB9C916F86F" httpUri="http://treatment.plazi.org/id/03BE5F1CFFEEFFE9FF74FDB9C916F86F" lastPageNumber="274" pageId="3" pageNumber="274">
<subSubSection id="C30DBD81FFEEFFE9FF74FDB9CC64FDC6" pageId="3" pageNumber="274" type="nomenclature">
<paragraph id="8BA8EE0AFFEEFFE9FF74FDB9CC82FDE6" blockId="3.[151,479,512,571]" box="[151,479,512,538]" pageId="3" pageNumber="274">
<heading id="D0E05966FFEEFFE9FF74FDB9CC82FDE6" bold="true" box="[151,479,512,538]" fontSize="11" level="1" pageId="3" pageNumber="274" reason="1">
<emphasis id="B9633218FFEEFFE9FF74FDB9CC82FDE6" bold="true" box="[151,479,512,538]" pageId="3" pageNumber="274">
<taxonomicName id="4C179589FFEEFFE9FF74FDB9CC27FDE6" ID-CoL="3PY66" box="[151,378,512,538]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis" status="sp. nov.">
<emphasis id="B9633218FFEEFFE9FF74FDB9CC27FDE6" bold="true" box="[151,378,512,538]" italics="true" pageId="3" pageNumber="274">Iredalea adenensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2508F63FFEEFFE9FE62FDB9CC82FDE6" box="[385,479,512,538]" pageId="3" pageNumber="274" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="8BA8EE0AFFEEFFE9FF74FD9BCC64FDC6" blockId="3.[151,479,512,571]" box="[151,313,546,571]" pageId="3" pageNumber="274">
<figureCitation id="132CF28FFFEEFFE9FF74FD9BCC5CFDC7" box="[151,257,546,571]" captionStart="FIGURE 1. A H" captionStartId="4.[151,250,1844,1866]" captionTargetBox="[180,1399,193,1817]" captionTargetId="figure@4.[180,1400,193,1818]" captionTargetPageId="4" captionText="FIGURE 1. A H. Tropidoturris vizcondei sp. nov. A B. Holotype (MNHN 26614), 11.1 x 4.3 mm. C H. Paratype (MZB 60071). C. Shell, scale bar 1 mm. D. Penultimate whorl, scale bar 500 µm. E. Surface microsculpture, scale bar 40 µm. F G. Protoconch, scale bar 200 µm. H. Microsculpture of protoconch, scale bar 100 µm. I K. Iredalea adenensis sp. nov. I J. Holotype (MZB 60072), 17.2 x 7.7 mm. K. Penultimate whorl. L P. Buchema shearmani sp. nov. L M. Holotype (MZB 60073), 9.9 x 3.5 mm. O. Protoconch. P. Detail of penultimate whorl. Q S. Crassispira somalica sp. nov. Q R. Holotype (MZB 60076), 21 x 8.9 mm. S. Penultimate whorl." httpUri="https://zenodo.org/record/220155/files/figure.png" pageId="3" pageNumber="274">
Figures
<date id="FFA9C8CAFFEEFFE9FF11FD9ACC5CFDC7" box="[242,257,547,571]" pageId="3" pageNumber="274">1</date>
</figureCitation>
. IK
</paragraph>
</subSubSection>
<subSubSection id="C30DBD81FFEEFFE9FF74FDD3CFD9FD37" pageId="3" pageNumber="274" type="materials_examined">
<paragraph id="8BA8EE0AFFEEFFE9FF74FDD3C807FD7F" blockId="3.[151,1437,618,1939]" box="[151,1370,618,643]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF74FDD3CC18FD7F" bold="true" box="[151,325,618,643]" pageId="3" pageNumber="274">
<typeStatus id="54AC50A8FFEEFFE9FF74FDD3CD8FFD7F" box="[151,210,618,643]" pageId="3" pageNumber="274">Type</typeStatus>
material.
</emphasis>
<typeStatus id="54AC50A8FFEEFFE9FEAFFDD3CCE9FD7F" box="[332,436,618,643]" pageId="3" pageNumber="274" type="holotype">Holotype</typeStatus>
(MZB 60072) and 3
<typeStatus id="54AC50A8FFEEFFE9FD41FDD2CE50FD7F" box="[674,781,619,643]" pageId="3" pageNumber="274" type="paratype">paratypes</typeStatus>
(MZB 60073); 1
<typeStatus id="54AC50A8FFEEFFE9FC36FDD2C968FD7F" box="[981,1077,619,643]" pageId="3" pageNumber="274" type="paratype">paratype</typeStatus>
(MNHN-IM-
<date id="FFA9C8CAFFEEFFE9FB37FDD3C812FD7F" box="[1236,1359,618,643]" pageId="3" pageNumber="274" value="2012" valueMax="2532">2012-2532</date>
).
</paragraph>
<paragraph id="8BA8EE0AFFEEFFE9FF24FD37C9F4FD5B" blockId="3.[151,1437,618,1939]" box="[199,1193,654,679]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF24FD37CC38FD5B" bold="true" box="[199,357,654,679]" pageId="3" pageNumber="274">
<typeStatus id="54AC50A8FFEEFFE9FF24FD37CC5FFD5B" box="[199,258,654,679]" pageId="3" pageNumber="274">Type</typeStatus>
locality.
</emphasis>
Offshore Gulf of Aden, trawled by local fishermen at
<quantity id="4CEF43EFFFEEFFE9FC24FD36C91BFD5A" box="[967,1094,655,679]" metricMagnitude="2" metricUnit="m" metricValue="3.0" metricValueMax="4.0" metricValueMin="2.0" pageId="3" pageNumber="274" unit="m" value="300.0" valueMax="400.0" valueMin="200.0">200400 m</quantity>
in 1994.
</paragraph>
<paragraph id="8BA8EE0AFFEEFFE9FF24FD0BCFD9FD37" blockId="3.[151,1437,618,1939]" box="[199,644,690,715]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF24FD0BCCEDFD37" bold="true" box="[199,432,690,715]" pageId="3" pageNumber="274">Material examined.</emphasis>
The
<typeStatus id="54AC50A8FFEEFFE9FE09FD0ACF47FD37" box="[490,538,691,715]" pageId="3" pageNumber="274">type</typeStatus>
material.
</paragraph>
</subSubSection>
<subSubSection id="C30DBD81FFEEFFE9FF24FD6FCDA9FB1A" pageId="3" pageNumber="274" type="description">
<paragraph id="8BA8EE0AFFEEFFE9FF24FD6FCDA9FB1A" blockId="3.[151,1437,618,1939]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF24FD6FCC04FD13" bold="true" box="[199,345,726,751]" pageId="3" pageNumber="274">Description.</emphasis>
Shell rather solid (fig. IJ), narrowly claviform (b/l 0.430.45; a/l 0.390.46) with high, acute spire and short base. Protoconch somewhat conical of 1¾ whorls. Protoconch diameter:
<quantity id="4CEF43EFFFEEFFE9FB4FFD43C848FCEE" box="[1196,1301,762,787]" metricMagnitude="-4" metricUnit="m" metricValue="7.5" pageId="3" pageNumber="274" unit="mm" value="0.75">0.75 mm</quantity>
(
<typeStatus id="54AC50A8FFEEFFE9FACBFD43C8CDFCEF" box="[1320,1424,762,787]" pageId="3" pageNumber="274" type="holotype">holotype</typeStatus>
). Teleoconch of up to 7 whorls with slight, rounded shoulder at about mid-whorl height, sutural ramp concave, suture shallow. Sculpture of numerous, narrow axial ribs (fig. K), as broad as interspaces, opisthocline with a prosocline inflexion on sutural ramp; sixteen to 17 axial ribs on antepenultimate and penultimate whorl, 1718 on last whorl. Adapical part of whorl surface sculptured on last two whorls by indistinct spiral lines; 78 spiral grooves, with a tendency to form rectangular granules where crossing axial ribs, on the rostrum. Aperture oblong-ovate, columella relatively straight with a moderately thick callus, its outer edge slightly raised; parietal region concave, parietal pad filling posterior angle of aperture, constricting anal sinus. Siphonal canal short, broad, slightly obliquely notched. Outer lip with a distinct stromboid notch in the abapical part, almost straight in lateral view, with a cutting edge. Anal sinus moderately deep, openly and asymmetrically U-shaped, directed slightly adapically. Color yellowishwhite with a single brown band margining abapical suture on penultimate whorl, occupying the median zone on the last whorl; columella and protoconch white. Dimensions:
<typeStatus id="54AC50A8FFEEFFE9FCF8FB3FCED5FB63" box="[795,904,1158,1183]" pageId="3" pageNumber="274" type="holotype">Holotype</typeStatus>
: 17.2 x
<quantity id="4CEF43EFFFEEFFE9FC3DFB3EC968FB62" box="[990,1077,1159,1182]" metricMagnitude="-3" metricUnit="m" metricValue="7.7" pageId="3" pageNumber="274" unit="mm" value="7.7">7.7 mm</quantity>
, aperture height
<quantity id="4CEF43EFFFEEFFE9FB0CFB3FC81AFB62" box="[1263,1351,1158,1183]" metricMagnitude="-3" metricUnit="m" metricValue="6.8" pageId="3" pageNumber="274" unit="mm" value="6.8">6.8 mm</quantity>
; largest
<typeStatus id="54AC50A8FFEEFFE9FF74FB12CDAAFB3F" box="[151,247,1195,1219]" pageId="3" pageNumber="274" type="paratype">paratype</typeStatus>
(MZB): 20.2 x
<quantity id="4CEF43EFFFEEFFE9FE4BFB12CF5DFB3E" box="[424,512,1195,1219]" metricMagnitude="-3" metricUnit="m" metricValue="9.1" pageId="3" pageNumber="274" unit="mm" value="9.1">9.1 mm</quantity>
, aperture height
<quantity id="4CEF43EFFFEEFFE9FD59FB12CE4FFB3E" box="[698,786,1195,1219]" metricMagnitude="-3" metricUnit="m" metricValue="9.3" pageId="3" pageNumber="274" unit="mm" value="9.3">9.3 mm</quantity>
; smallest
<typeStatus id="54AC50A8FFEEFFE9FC63FB12CEBDFB3F" box="[896,992,1195,1219]" pageId="3" pageNumber="274" type="paratype">paratype</typeStatus>
(MZB): 14.7 x
<quantity id="4CEF43EFFFEEFFE9FB72FB13C9B5FB3E" box="[1169,1256,1194,1219]" metricMagnitude="-3" metricUnit="m" metricValue="6.4" pageId="3" pageNumber="274" unit="mm" value="6.4">6.4 mm</quantity>
, aperture height
<quantity id="4CEF43EFFFEEFFE9FF74FB77CDADFB1A" box="[151,240,1230,1255]" metricMagnitude="-3" metricUnit="m" metricValue="6.6" pageId="3" pageNumber="274" unit="mm" value="6.6">6.6 mm</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="C30DBD81FFEEFFE9FF24FB4BC87CFAF7" box="[199,1313,1266,1291]" pageId="3" pageNumber="274" type="etymology">
<paragraph id="8BA8EE0AFFEEFFE9FF24FB4BC87CFAF7" blockId="3.[151,1437,618,1939]" box="[199,1313,1266,1291]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF24FB4BCC13FAF7" bold="true" box="[199,334,1266,1291]" pageId="3" pageNumber="274">Etymology.</emphasis>
<taxonomicName id="4C179589FFEEFFE9FEB7FB4BCC9FFAF7" box="[340,450,1266,1291]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis">
<emphasis id="B9633218FFEEFFE9FEB7FB4BCC9FFAF7" box="[340,450,1266,1291]" italics="true" pageId="3" pageNumber="274">adenensis</emphasis>
</taxonomicName>
, alluding to the fact that the new species is described from the Gulf of Aden.
</paragraph>
</subSubSection>
<subSubSection id="C30DBD81FFEEFFE9FF24FAAFC916F86F" pageId="3" pageNumber="274" type="discussion">
<paragraph id="8BA8EE0AFFEEFFE9FF24FAAFC916F86F" blockId="3.[151,1437,618,1939]" pageId="3" pageNumber="274">
<emphasis id="B9633218FFEEFFE9FF24FAAFCC66FAD3" bold="true" box="[199,315,1302,1327]" pageId="3" pageNumber="274">Remarks.</emphasis>
This new species represents the first record of the genus
<taxonomicName id="4C179589FFEEFFE9FC2EFAAFC976FAD3" box="[973,1067,1302,1327]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="genus">
<emphasis id="B9633218FFEEFFE9FC2EFAAFC976FAD3" box="[973,1067,1302,1327]" italics="true" pageId="3" pageNumber="274">Iredalea</emphasis>
</taxonomicName>
from the Gulf of Aden. Kilburn (1988) reported two
<taxonomicName id="4C179589FFEEFFE9FE9EFA83CC86FAAF" box="[381,475,1338,1363]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="genus">
<emphasis id="B9633218FFEEFFE9FE9EFA83CC86FAAF" box="[381,475,1338,1363]" italics="true" pageId="3" pageNumber="274">Iredalea</emphasis>
</taxonomicName>
species from southern Africa, namely
<taxonomicName id="4C179589FFEEFFE9FC68FA83C849FAAF" authority="Sowerby, 1893" authorityName="Sowerby" authorityYear="1893" box="[907,1300,1338,1363]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="inclinata">
<emphasis id="B9633218FFEEFFE9FC68FA83C909FAAF" box="[907,1108,1338,1363]" italics="true" pageId="3" pageNumber="274">Iredalea inclinata</emphasis>
(Sowerby, 1893)
</taxonomicName>
and
<taxonomicName id="4C179589FFEEFFE9FAA9FA85CC6AFA8B" authority="Pease, 1868" authorityName="Pease" authorityYear="1868" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="exilis">
<emphasis id="B9633218FFEEFFE9FAA9FA85C8C6FAAF" box="[1354,1435,1338,1363]" italics="true" pageId="3" pageNumber="274">I. exilis</emphasis>
(Pease, 1868)
</taxonomicName>
.
<taxonomicName id="4C179589FFEEFFE9FEA4FAE7CF43FA8B" box="[327,542,1374,1399]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis" status="sp. nov.">
<emphasis id="B9633218FFEEFFE9FEA4FAE7CF43FA8B" box="[327,542,1374,1399]" italics="true" pageId="3" pageNumber="274">Iredalea adenensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2508F63FFEEFFE9FDC8FAE7CFD4FA8B" box="[555,649,1374,1399]" pageId="3" pageNumber="274" rank="species">
<emphasis id="B9633218FFEEFFE9FDC8FAE7CFD4FA8B" bold="true" box="[555,649,1374,1399]" pageId="3" pageNumber="274">sp. nov.</emphasis>
</taxonomicNameLabel>
is comparable in size to
<taxonomicName id="4C179589FFEEFFE9FC5EFAE6C960FA8B" box="[957,1085,1374,1399]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="inclinata">
<emphasis id="B9633218FFEEFFE9FC5EFAE6C960FA8B" box="[957,1085,1374,1399]" italics="true" pageId="3" pageNumber="274">I. inclinata</emphasis>
</taxonomicName>
, reported from
<collectingCountry id="F300AE9AFFEEFFE9FB18FAE7C835FA8B" box="[1275,1384,1374,1399]" name="Mauritius" pageId="3" pageNumber="274">Mauritius</collectingCountry>
and
<collectingCountry id="F300AE9AFFEEFFE9FF74FA3BCDABFA67" box="[151,246,1410,1435]" name="Réunion" pageId="3" pageNumber="274">Reunion</collectingCountry>
Island to
<collectingCountry id="F300AE9AFFEEFFE9FE8AFA3BCCF5FA67" box="[361,424,1410,1435]" name="South Africa" pageId="3" pageNumber="274">Natal</collectingCountry>
, but has more numerous axial ribs (1618 versus 1215 on later two teleoconch whorls), higher periphery (median rather than at about abapical third of whorl), fewer protoconch whorls (1¾ versus 2 ½), deeper anal sinus and very different colour pattern. In particular,
<taxonomicName id="4C179589FFEEFFE9FC67FA75C956FA1F" box="[900,1035,1482,1507]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis">
<emphasis id="B9633218FFEEFFE9FC67FA75C956FA1F" box="[900,1035,1482,1507]" italics="true" pageId="3" pageNumber="274">I. adenensis</emphasis>
</taxonomicName>
has a yellowish-white shell with a single brown band margining abapical suture on penultimate whorl occupying the median zone on the last whorl, while the shell of
<taxonomicName id="4C179589FFEEFFE9FEBCF9ADCC87F9D7" box="[351,474,1554,1579]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="inclinata">
<emphasis id="B9633218FFEEFFE9FEBCF9ADCC87F9D7" box="[351,474,1554,1579]" italics="true" pageId="3" pageNumber="274">I. inclinata</emphasis>
</taxonomicName>
is patterned with deep brown forming three bands on last whorl (Kilburn, 1988: 187). Weinkauff in Weinkauff &amp; Kobelt, 1876 described
<taxonomicName id="4C179589FFEEFFE9FD0EF98FCEA3F9B3" box="[749,1022,1590,1615]" class="Gastropoda" family="Zebinidae" genus="Pleurotoma" higherTaxonomySource="CoL" kingdom="Animalia" order="Littorinimorpha" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="polygonalis">
<emphasis id="B9633218FFEEFFE9FD0EF98FCEA3F9B3" box="[749,1022,1590,1615]" italics="true" pageId="3" pageNumber="274">Pleurotoma polygonalis</emphasis>
</taxonomicName>
from
<collectingCountry id="F300AE9AFFEEFFE9FBAAF98FC9F0F9B3" box="[1097,1197,1590,1615]" name="Tanzania" pageId="3" pageNumber="274">Zanzibar</collectingCountry>
which, according to Kilburn (1988: 187), may prove to be an earlier name for
<taxonomicName id="4C179589FFEEFFE9FCC4F9E3CEADF98F" box="[807,1008,1626,1651]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="inclinata">
<emphasis id="B9633218FFEEFFE9FCC4F9E3CEADF98F" box="[807,1008,1626,1651]" italics="true" pageId="3" pageNumber="274">Iredalea inclinata</emphasis>
</taxonomicName>
. The shell of
<taxonomicName id="4C179589FFEEFFE9FB6DF9E3C8C1F98F" box="[1166,1436,1626,1651]" class="Gastropoda" family="Zebinidae" genus="Pleurotoma" higherTaxonomySource="CoL" kingdom="Animalia" order="Littorinimorpha" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="polygonalis">
<emphasis id="B9633218FFEEFFE9FB6DF9E3C8C1F98F" box="[1166,1436,1626,1651]" italics="true" pageId="3" pageNumber="274">Pleurotoma polygonalis</emphasis>
</taxonomicName>
was described as “
<emphasis id="B9633218FFEEFFE9FE8DF9C7CFD7F96A" box="[366,650,1662,1687]" italics="true" pageId="3" pageNumber="274">albida, zonis fuscis picta</emphasis>
” with “
<emphasis id="B9633218FFEEFFE9FD0BF9C7CE99F96B" box="[744,964,1662,1687]" italics="true" pageId="3" pageNumber="274">flavidulo bifasciata</emphasis>
” aperture (page 100, pl. 21 figs 7,9). As remarked by Kilburn (1988), the original figure of
<taxonomicName id="4C179589FFEEFFE9FD3EF91BCEB1F947" box="[733,1004,1698,1723]" class="Gastropoda" family="Zebinidae" genus="Pleurotoma" higherTaxonomySource="CoL" kingdom="Animalia" order="Littorinimorpha" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="polygonalis">
<emphasis id="B9633218FFEEFFE9FD3EF91BCEB1F947" box="[733,1004,1698,1723]" italics="true" pageId="3" pageNumber="274">Pleurotoma polygonalis</emphasis>
</taxonomicName>
is rather indistinct but the drawing in lateral view clearly shows two brown bands at level of aperture, thus differing from
<taxonomicName id="4C179589FFEEFFE9FBDCF97FC84CF923" box="[1087,1297,1734,1759]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis">
<emphasis id="B9633218FFEEFFE9FBDCF97FC84CF923" box="[1087,1297,1734,1759]" italics="true" pageId="3" pageNumber="274">Iredalea adenensis</emphasis>
</taxonomicName>
which has a single brown band. Apart from the presence of spiral bands, the shell of
<taxonomicName id="4C179589FFEEFFE9FC2BF955C913F8FF" box="[968,1102,1770,1795]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="adenensis">
<emphasis id="B9633218FFEEFFE9FC2BF955C913F8FF" box="[968,1102,1770,1795]" italics="true" pageId="3" pageNumber="274">I. adenensis</emphasis>
</taxonomicName>
is yellowish-white while that of
<taxonomicName id="4C179589FFEEFFE9FF54F8B6CC05F8DB" box="[183,344,1806,1831]" class="Gastropoda" family="Zebinidae" genus="Pleurotoma" higherTaxonomySource="CoL" kingdom="Animalia" order="Littorinimorpha" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="polygonalis">
<emphasis id="B9633218FFEEFFE9FF54F8B6CC05F8DB" box="[183,344,1806,1831]" italics="true" pageId="3" pageNumber="274">P. polygonalis</emphasis>
</taxonomicName>
is patterned with brown (“
<emphasis id="B9633218FFEEFFE9FD6DF8B6CE0FF8DA" box="[654,850,1807,1831]" italics="true" pageId="3" pageNumber="274">zonis fuscis picta</emphasis>
”). The new species resembles
<taxonomicName id="4C179589FFEEFFE9FB54F8B6C8C1F8DB" authority="Pease, 1860" authorityName="Pease" authorityYear="1860" box="[1207,1436,1806,1831]" class="Gastropoda" family="Drilliidae" genus="Iredalea" kingdom="Animalia" order="Neogastropoda" pageId="3" pageNumber="274" phylum="Mollusca" rank="species" species="exilis">
<emphasis id="B9633218FFEEFFE9FB54F8B6C856F8DB" box="[1207,1291,1806,1831]" italics="true" pageId="3" pageNumber="274">I. exilis</emphasis>
Pease, 1860
</taxonomicName>
reported from Polynesia to southern Africa, in possessing a brown band in the median zone of last whorl but otherwise differs mainly in its much larger shell (up to mm
<quantity id="4CEF43EFFFEEFFE9FCA3F8EECECDF892" box="[832,912,1879,1903]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="3" pageNumber="274" unit="mm" value="20.0">20 mm</quantity>
versus
<quantity id="4CEF43EFFFEEFFE9FC0BF8EEC977F892" box="[1000,1066,1879,1903]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" pageId="3" pageNumber="274" unit="mm" value="8.0">8 mm</quantity>
or less), shape (claviform rather than pupoid) and in possessing a paucispiral protoconch (1¾ versus about 4 whorls).
</paragraph>
</subSubSection>
</treatment>
</document>