331 lines
26 KiB
XML
331 lines
26 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.758.25100" ID-GBIF-Dataset="28878235-7133-4481-bc69-1a3beb87169d" ID-PMC="PMC5962629" ID-Pensoft-Pub="1313-2970-758-1" ID-PubMed="29844710" ID-ZBK="55AA52BDDFD24A729EDA95CE41C5EF13" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970-758-1" ModsDocOrigin="ZooKeys 758" ModsDocTitle="A rare and unusual new bittiine genus with two new species from the South Pacific (Cerithiidae, Gastropoda)" checkinTime="1526381261195" checkinUser="pensoft" docAuthor="Strong, Ellen E. & Bouchet, Philippe" docDate="2018" docId="7AA12541DB7855B267A3DC7FC3D2DDBC" docLanguage="en" docName="ZooKeys 758: 1-18" docOrigin="ZooKeys 758" docSource="http://dx.doi.org/10.3897/zookeys.758.25100" docTitle="Limatium aureum Strong & Bouchet, 2018, sp. n." docType="treatment" docUuid="6EF8F349-E899-4E59-A93D-1CECB0CA47C0" docUuidSource="ZooBank" docVersion="5" lastPageNumber="8" masterDocId="FF3D0F614F18FF96FFCD730FFFFDFFC9" masterDocTitle="A rare and unusual new bittiine genus with two new species from the South Pacific (Cerithiidae, Gastropoda)" masterLastPageNumber="18" masterPageNumber="1" pageNumber="5" updateTime="1668165788560" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A rare and unusual new bittiine genus with two new species from the South Pacific (Cerithiidae, Gastropoda)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Strong, Ellen E.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Bouchet, Philippe</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>758</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>18</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.758.25100</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.758.25100</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-758-1</mods:identifier>
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<mods:identifier type="ZBK">55AA52BDDFD24A729EDA95CE41C5EF13</mods:identifier>
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<mods:identifier type="ZooBank">55AA52BDDFD24A729EDA95CE41C5EF13</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="143970601" LSID="urn:lsid:zoobank.org:act:6EF8F349-E899-4E59-A93D-1CECB0CA47C0" httpUri="http://treatment.plazi.org/id/7AA12541DB7855B267A3DC7FC3D2DDBC" lastPageId="7" lastPageNumber="8" pageId="4" pageNumber="5">
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<subSubSection pageId="4" pageNumber="5" type="nomenclature">
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<paragraph pageId="4" pageNumber="5">
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<taxonomicName LSID="http://zoobank.org/6EF8F349-E899-4E59-A93D-1CECB0CA47C0" class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium aureum" order="Sorbeoconcha" pageId="4" pageNumber="5" phylum="Mollusca" rank="species" species="aureum">Limatium aureum</taxonomicName>
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<taxonomicNameLabel pageId="4" pageNumber="5">sp. n.</taxonomicNameLabel>
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Fig. 3
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<normalizedToken originalValue="A–H">A-H</normalizedToken>
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, K, L, N
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</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="type material">
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<paragraph pageId="5" pageNumber="6">
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<pageBreakToken pageId="5" pageNumber="6" start="start">Type</pageBreakToken>
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material.
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</paragraph>
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<paragraph pageId="5" pageNumber="6">Holotype MNHN IM-2013-42460 (Fig. 3A); paratypes as listed below.</paragraph>
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<caption pageId="5" pageNumber="6">
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<paragraph pageId="5" pageNumber="6">
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Figure 3. Shell and operculum morphology of
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<taxonomicName class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium aureum" pageId="5" pageNumber="6" phylum="Mollusca" rank="species" species="aureum">Limatium aureum</taxonomicName>
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sp. n. (
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<normalizedToken originalValue="A–H">A-H</normalizedToken>
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, K, L, N) and
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<taxonomicName class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium" pageId="5" pageNumber="6" phylum="Mollusca" rank="genus">Limatium</taxonomicName>
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sp. (I, J, M).
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<taxonomicName class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium aureum" pageId="5" pageNumber="6" phylum="Mollusca" rank="species" species="aureum">Limatium aureum</taxonomicName>
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sp. n.: A Holotype, MNHN IM-2013-42460. Austral Islands, Maria B Austral Islands, Pointe Kauira, RAPA 2002 stn. 36 (MNHN IM-2014-6920) C New Caledonia, CORAIL 2 stn. DW26 (MNHN IM-2014-6921) D Tonga, between Eua and Tongatapu, BORDAU 2, stn. DW1512 (MNHN IM-2014-6922) E Austral Islands, NW of Tauna Islet, RAPA 2002 stn. 44 (MNHN IM-2014-6923) F New Caledonia, Grand
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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<normalizedToken originalValue="Aboré">Abore</normalizedToken>
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off
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<normalizedToken originalValue="Nouméa">Noumea</normalizedToken>
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, MONTROUZIER stn. 1352 (MNHN IM-2014-6924). G Loyalty Islands, LIFOU 2000 stn. 1423 (MNHN IM-2014-6925) H Loyalty Islands, LIFOU 2000 stn. 1418 (MNHN IM-2014-6926) K Protoconch, New Caledonia, Grand
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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<normalizedToken originalValue="Aboré">Abore</normalizedToken>
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off
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<normalizedToken originalValue="Nouméa">Noumea</normalizedToken>
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, MONTROUZIER stn. 1352 (MNHN IM-2014-6927) L Protoconch, Austral Islands, SE of Tauna Islet, RAPA 2002 stn. 8 (MNHN IM-2014-6928) N Operculum, Austral Islands, Pointe Kauira, RAPA 2002 stn. 36 (MNHN IM-2014-6829) (same as in 3B).
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<taxonomicName class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium" pageId="5" pageNumber="6" phylum="Mollusca" rank="genus">Limatium</taxonomicName>
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sp.: I Philippines, W of Mindoro, MUSORSTOM 3 stn. DR117 (MNHN IM-2014-6830) J Vanuatu, Santo, W of Tutuba, SANTO 2006 stn. DS103 (MNHN IM-2014-6831) M Protoconch, Vanuatu, Santo, West of Tutuba I., SANTO 2006 stn. DS103 (MNHN IM-2014-6832) (same as in 3J). Scale bars: 5 mm (
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<normalizedToken originalValue="A–J">A-J</normalizedToken>
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); 100
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<normalizedToken originalValue="K–M">K-M</normalizedToken>
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); 500
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(N).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="6" type="type locality">
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<paragraph pageId="5" pageNumber="6">Type locality.</paragraph>
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<paragraph pageId="5" pageNumber="6">
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Austral Islands, Maria I., outer slope of barrier reef,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-21.796667">21°47.8'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-154.71666">154°43'W</geoCoordinate>
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, 24 m [TUHAA PAE 2013 cruise, stn. AMA02, field number PB16_BC855; leg. A. Fedosov; 5 April 2013].
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6" type="materials_examined">
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<paragraph pageId="5" pageNumber="6">Other material examined</paragraph>
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<paragraph lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
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(all in MNHN uncatalogued, except where noted): FRENCH POLYNESIA. AUSTRAL IS: RAPA Island expedition 2002: Stn. 6, off Baie de Ahurei,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-27.613333">27°36.8'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-144.27834">144°16.7'W</geoCoordinate>
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, 42 m, 1 dd. - Stn. 8, SE of Tauna islet,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-27.608334">27°36.5'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-144.295">144°17.7'W</geoCoordinate>
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, 52-57 m, 7 dd (MNHN IM-2014-6928, Fig. 3L). - Stn. 28, Pointe Taekateke,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-27.64">27°38.4'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-144.34334">144°20.6'W</geoCoordinate>
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, 30 m, 1 dd. - Stn. 36, Pointe Kauira,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-27.558332">27°33.5'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-144.34666">144°20.8'W</geoCoordinate>
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, 27 m, 1 live collected (lv), 2 dd (MNHN IM-2014-6920, IM-2014-6929, Fig. 3B, N). - Stn. 44, NW of Tauna islet,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-27.605">27°36.3'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-144.30333">144°18.2'W</geoCoordinate>
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, 30 m, 2 dd (MNHN IM-2014-6923, Fig. 3E). - BENTHAUS stn. DW1934, Banc
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<normalizedToken originalValue="Président">President</normalizedToken>
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Thiers,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-24.676666">24°40.6'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-145.95667">145°57.4'W</geoCoordinate>
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, 560-1150 m, 1 dd. TUAMOTU IS: Makemo, secteur Pohue,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-16.668333">
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<pageBreakToken pageId="6" pageNumber="7" start="start">16</pageBreakToken>
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°40.1'S
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</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-143.375">143°22.5'W</geoCoordinate>
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, 63 m, 1 dd, paratype USNM 1462727 ex coll. Letourneux; Makemo, passe Arikitamiro, ca.
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-16.618334">16°37.1'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-143.565">143°33.9'W</geoCoordinate>
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, 45 m, 47 m and 54 m, 3 dd, in coll. Letourneux; Rangiroa, Passe de Tiputa, ca.
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-14.966666">14°58.0'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-147.625">147°37.5'W</geoCoordinate>
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, 81 m and 100 m, 2 dd, USNM 1462728 ex coll. Letourneux. NEW CALEDONIA. Coral Sea. Lansdowne-Fairway Reefs. CORAIL 2 stn. DW26,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.366667">20°22'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="161.08333">161°05'E</geoCoordinate>
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, 62 m, 1 lv (MNHN IM-2014-6921, Fig. 3C). - EBISCO stn. DW2622,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.066668">20°04'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="160.35">160°21'E</geoCoordinate>
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, 291-323 m, 1 dd. Mainland New Caledonia. LAGON Stn. 830, off
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<normalizedToken originalValue="Poindimié">Poindimie</normalizedToken>
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,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.816668">20°49'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="165.31667">165°19'E</geoCoordinate>
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, 105-110 m, 4 dd. MONTROUZIER Stn. 1269,
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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Doiman off Touho, outer slope,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.585">20°35.1'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="165.135">165°08.1'E</geoCoordinate>
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, 15-20 m, 4 dd. - Stn. 1331, Grand
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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de Koumac, outer slope, 20°40'-20°40.6'S, 164°11.2'-164°12.1'E, 55-57 m, 4 dd. - Stn. 1352, Grand
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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<normalizedToken originalValue="Aboré">Abore</normalizedToken>
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off
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<normalizedToken originalValue="Nouméa">Noumea</normalizedToken>
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, outer slope, 22°22.2'S, 166°16.0/166°16.1'E, 27-35 m, 5 lv, 4 dd (MNHN IM-2014-6924, IM-2014-6927, Fig. 3F, K); - Stn. 1354, Grand
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<normalizedToken originalValue="Récif">Recif</normalizedToken>
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<normalizedToken originalValue="Aboré">Abore</normalizedToken>
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, outer slope,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-22.371666">22°22.3'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="166.265">166°15.9'E</geoCoordinate>
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, 27-37 m, 2 lv, 2 dd. BATHUS 1 stn. DW692,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.583334">20°35'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="164.98334">164°59'E</geoCoordinate>
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, 140-150 m, 2 dd. LOYALTY ISLANDS: LIFOU 2000 Expedition, Baie du Santal: stn. 1418,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.781666">20°46.9'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.13167">167°07.9'E</geoCoordinate>
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, 1-5 m, 1 dd (MNHN IM-2014-6926, Fig. 3H). - Stn. 1423,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.9">20°54'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.12167">167°07.3'E</geoCoordinate>
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, 12 m, 2 dd (MNHN IM-2014-6925, Fig. 3G). - Stn. 1429,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.791666">20°47.5'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.11833">167°07.1'E</geoCoordinate>
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, 8-18 m, 2 dd. - Stn. 1432,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.891666">20°53.5'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.045">167°02.7'E</geoCoordinate>
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, 12-32 m, 2 dd. - Stn. 1434,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.875">20°52.5'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.135">167°08.1'E</geoCoordinate>
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, 5-20 m, 2 dd. - Stn. 1441,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.773333">20°46.4'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="167.03334">167°02'E</geoCoordinate>
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, 20 m, 2 dd. - Stn. 1442,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.773333">20°46.4'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="167.03334">167°02'E</geoCoordinate>
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, 47 m, 1 dd. - Stn. 1443,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.896667">20°53.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.12167">167°07.3'E</geoCoordinate>
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, 48-52 m, 3 dd. - Stn. 1445,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.846666">20°50.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.16167">167°09.7'E</geoCoordinate>
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, 10-12 m, 1 dd. - Stn. 1448,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.763332">20°45.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.02667">167°01.6'E</geoCoordinate>
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, 20 m, 4 dd. - Stn. 1449,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.763332">20°45.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.02667">167°01.6'E</geoCoordinate>
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, 17 m, 1 dd. - Stn. 1450,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.763332">20°45.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.02667">167°01.6'E</geoCoordinate>
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, 27-31 m, 1 dd. - Stn. 1451,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.788334">20°47.3'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.11333">167°06.8'E</geoCoordinate>
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, 10-21 m, 3 dd. - Stn. 1453,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.91">20°54.6'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.035">167°02.1'E</geoCoordinate>
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, 21-30 m, 1 dd. - Stn. 1454,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.943333">20°56.6'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="167.03334">167°02'E</geoCoordinate>
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, 15-18 m, 2 dd. - Stn. 1455,
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.946667">20°56.8'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.045">167°02.7'E</geoCoordinate>
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, 15-20 m, 1 lv, 1 dd. - Stn. 1456,
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||
<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.821667">20°49.3'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.17334">167°10.4'E</geoCoordinate>
|
||
, 25-30 m, 1 lv, 1 dd. - Stn. 1457,
|
||
<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.78">20°46.8'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.04666">167°02.8'E</geoCoordinate>
|
||
, 5-10 m, 2 lv, 1 dd. - Stn. 1461,
|
||
<geoCoordinate direction="south" orientation="latitude" precision="925" value="-20.9">20°54'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="925" value="167.03334">167°02'E</geoCoordinate>
|
||
, 100-120 m, 1 lv, 1 dd. - Stn. 1469,
|
||
<geoCoordinate direction="south" orientation="latitude" precision="92" value="-20.903334">20°54.2'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="92" value="167.00667">167°00.4'E</geoCoordinate>
|
||
, 70-130 m, 2 dd.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="6" pageNumber="7" type="etymology">
|
||
<paragraph pageId="6" pageNumber="7">Etymology.</paragraph>
|
||
<paragraph pageId="6" pageNumber="7">Latin adjective aureus, -a, -um, meaning golden, with reference to the background color of the shell.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection lastPageId="7" lastPageNumber="8" pageId="6" pageNumber="7" type="diagnosis">
|
||
<paragraph pageId="6" pageNumber="7">Diagnosis.</paragraph>
|
||
<paragraph lastPageId="7" lastPageNumber="8" pageId="6" pageNumber="7">
|
||
Shell [holotype, unless otherwise noted]. Shell short, squat, with regular, conical spire, body whorl occupying ~46% of shell height, consisting of 9+ [tip of teleoconch and protoconch missing] rather flat teleoconch whorls, suture impressed (Fig. 3A). Protoconch [description based on specimens illustrated in Fig. 3K, L] multispiral, of 2.5 whorls, with a complex sculpture of two strongly pustulose, thick and heavy spiral keels at periphery, and a third, much lighter cord on the base, partly covered by next whorl; strong, prosocline, axial riblets on sutural ramp, fading out abapically towards spiral keel; and irregular, short, elongated or rounded granules that cover the abapical part of the whorl and may extend in between the two peripheral keels; protoconch/teleoconch transition sharp, with a lamellar terminal varix and a deeply indented sinusigera notch (Fig. 3K, L). On early teleoconch whorls sculpture consisting of closely-set axial ribs intersected by three spiral cords together forming beaded intersections, abapicalmost cord stronger, forming an angular projection at intersection with ribs; axial and spiral sculpture becoming weaker on exposed parts of subadult and adult
|
||
<pageBreakToken pageId="7" pageNumber="8" start="start">whorls</pageBreakToken>
|
||
, until an almost smooth last whorl; last whorl with weakly defined basal cord encircling convex base bearing six well defined, raised cords. Siphonal canal very short, broadly open, not constricted. Aperture circular-ovate, ~32% of shell height. Anal canal indistinct. Columella concave with very thinly callused columellar lip. Outer lip of aperture slightly thickened, but not forming a terminal varix, subvertical on periphery, regularly convex on base. Shell surface smooth and shiny, as if waxed, color overall rich honey to golden brown with broad, opaque, irregular white fascioles extending from suture to suture at irregular intervals; adapical and basal cords with alternating white and honey blotches at regular intervals; columellar side of anal and columellar callosity white, parietal callosity transparent. Tip of teleoconch (first whorl) white, protoconch dark brown. Dimensions: 7.97
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
3.40 mm. Average 6.83
|
||
<normalizedToken originalValue="±">+/-</normalizedToken>
|
||
1.47 mm (n = 12).
|
||
</paragraph>
|
||
<paragraph pageId="7" pageNumber="8">Operculum. Subcircular, paucispiral, comprising three whorls. Nucleus large, subcentral, ~72% of operculum length.</paragraph>
|
||
<paragraph pageId="7" pageNumber="8">
|
||
Radula. Rachidian (Fig. 4
|
||
<normalizedToken originalValue="A–C">A-C</normalizedToken>
|
||
, E, F) with roughly hexagonal to septagonal basal plate, squarish to rectangular, broader than tall, with elevated central portion with rounded, U-shaped lower margin. Cutting edge bearing one strong central and two lateral long, dagger-like pointed cusps; central cusp up to twice as long as lateral cusps. Lateral teeth (Fig. 4A, B, C,
|
||
<normalizedToken originalValue="E–F">E-F</normalizedToken>
|
||
) with short lateral extensions, roughly 1.5 times length of cutting edge. Cutting edge with large central, pointed cusp and single, large pointed inner cusp and two to four tapering outer denticles. Thickened buttress extending down face of marginal tooth slightly outside central cusp, terminating in prominent, bluntly rounded peg roughly halfway down face (Fig. 4F). Marginal teeth (Fig. 4A,
|
||
<normalizedToken originalValue="C–D">C-D</normalizedToken>
|
||
, E) similar in shape and denticulation. Inner marginal teeth with large pointed central cusp, two to three tapering inner pointed cusps and one to two outer pointed denticles. Outer marginal teeth with large, pointed, central cusp, two to three tapering inner pointed cusps and a smooth, acuspate outer edge.
|
||
</paragraph>
|
||
<caption pageId="7" pageNumber="8">
|
||
<paragraph pageId="7" pageNumber="8">
|
||
Figure 4. Radula morphology of
|
||
<taxonomicName class="Gastropoda" family="Cerithiidae" genus="Limatium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Limatium aureum" pageId="7" pageNumber="8" phylum="Mollusca" rank="species" species="aureum">Limatium aureum</taxonomicName>
|
||
sp. n.
|
||
<normalizedToken originalValue="A–D">A-D</normalizedToken>
|
||
Holotype, MNHN IM-2013-42460, Austral Islands, Maria E, F Austral Islands, Pointe Kauira, RAPA 2002 stn. 36 A Radular ribbon B Detail of rachidian and lateral teeth C Detail of half row, showing outer edges of lateral and marginal teeth D Detail of marginal teeth, showing inner edges E Radular ribbon of second specimen, showing variation in length of cusps F Detail of rachidian and lateral teeth, showing variation in width of rachidian and in length of cusps. Scale bar: 50
|
||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||
(A, C, D, E); 40
|
||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||
(B); 30
|
||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||
(F).
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="7" pageNumber="8" type="distribution">
|
||
<paragraph pageId="7" pageNumber="8">Distribution and ecology.</paragraph>
|
||
<paragraph pageId="7" pageNumber="8">Austral Islands and Tuamotus (French Polynesia); Loyalty Islands, mainland New Caledonia, and Coral Sea. Known only from the material examined. Collected alive in 10-100 m, empty shells to 560-1150 m were undoubtedly carried downslope.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="7" pageNumber="8" type="remarks">
|
||
<paragraph pageId="7" pageNumber="8">Remarks.</paragraph>
|
||
<paragraph pageId="7" pageNumber="8">
|
||
The holotype is
|
||
<normalizedToken originalValue="“untypical”">"untypical"</normalizedToken>
|
||
in the sense that it is an unusually broad specimen that, however, seems to be connected by morphologically intermediate specimens to forms that are more slender and with a strong cord delimiting the basal disc. All these specimens share a color pattern of alternating white and honey blotches on the subsutural and basal cords, in addition to ill-defined axial white fascioles, on an overall rich, golden honey background. Another type of variation comes from the extension/persistence of the spiral cords on subadult/adult whorls - with specimens almost completely smooth on the periphery of the last whorl and others with strong spiral cords persisting onto the last whorl.
|
||
</paragraph>
|
||
<paragraph pageId="7" pageNumber="8">
|
||
An empty shell collected from Tonga (BORDAU 2 stn. DW1512, between Eua and Tongatapu,
|
||
<geoCoordinate direction="south" orientation="latitude" precision="925" value="-21.316668">21°19'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="west" orientation="longitude" precision="925" value="-175.01666">175°01'W</geoCoordinate>
|
||
, 183-184 m) (MNHN IM-2014-6922, Fig. 3D) is unusually tall and narrow, with spiral and axial sculpture persisting onto the last whorl; its color pattern, however, is very similar to that of
|
||
<taxonomicName lsidName="L. aureum" pageId="7" pageNumber="8" rank="species" species="aureum">L. aureum</taxonomicName>
|
||
and we tentatively consider it to belong to that species.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |