{{Short description|Species of gastropod}} {{Speciesbox | image = Cypraea walkeri - Philippines-4.JPG | image_caption = A shell of ''Contradusta walkeri'' from Philippines, anterior end towards the right | genus = Contradusta | species = walkeri | authority = (Sowerby I, 1832) | synonyms_ref = <ref name="WoRMS" /> | synonyms =*''Cypraea walkeri'' <small>(Sowerby I, 1832)</small> (basionym) *''Cypraea amabilis'' <small>Jousseaume, 1881</small> *''Erronea walkeri continens merista'' (f) <small>Iredale, 1939</small> }}
'''''Contradusta walkeri''''' is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.<ref name="WoRMS">{{WRMS species|530913 |''Contradusta walkeri'' (Sowerby I, 1832) |||WoRMS (2009). Contradusta walkeri (Sowerby I, 1832) . Accessed through the World Register of Marine Species at <nowiki>http://www.marinespecies.org/aphia.php?p=taxdetails&id=530913 </nowiki> on 24 October 2010}}</ref>
==Subspecies== *''Contradusta walkeri continens'' <small>(Iredale, 1935)</small> <ref>{{Gastropods.com|key=3|id=4503|title=''Contradusta walkeri continens''|access-date=24 October 2010}}</ref> *''Contradusta walkeri surabajensis'' <small>Schilder, F.A., 1937</small> <ref>{{Gastropods.com|key=8|id=888|title=''Contradusta walkeri surabajensis''|access-date=24 October 2010}}</ref> *''Contradusta walkeri walkeri'' <small>(Sowerby I, 1832)</small> <ref>{{Gastropods.com|key=0|id=100|title=''Contradusta walkeri walkeri''|access-date=24 October 2010}}</ref>
==Description== The shells of these common cowries reach on average {{convert|19|-|23|mm}}of length, with a minimum size of {{convert|14|mm}} and a maximum size of {{convert|39|mm}}. The shape is usually oval, the dorsum surface is smooth and shiny, the basic color is pale brown, with a wide dark brown trasversal band and some small irregular brown patches on the top. The margins are white, with several brown dots. The base may be white, purple or cream and the wide and sinuous aperture shows long labial teeth. The interior of the shell may be purple. In the living cowries the mantle is transparent, with short sensorial papillae. {| ||[[File:Cypraeidae - Cypraea walkeri - Philippines-1.JPG|thumb|220px|left|A shell of ''Contradusta walkeri'' from Philippines, dorsal view, anterior end towards the right]] ||[[File:Cypraea walkeri - Philippines-3.JPG|thumb|200px|left|A shell of ''Contradusta walkeri'' from Philippines, lateral view, anterior end towards the right]] ||[[File:Cypraeidae - Cypraea walkeri - Philippines-4.JPG|thumb|200px|left|A shell of ''Contradusta walkeri'' from Philippines, ventral view, anterior end towards the left]] ||[[File:Contradusta walkeri surabajensis 01.JPG|thumb|220px|left|A shell of ''Contradusta walkeri'' ssp. ''surabajensis'' from Japan]] |}
==Distribution== This species is distributed in the Red Sea, in the Indian Ocean along the Seychelles, in the West Pacific along South East Asia, the Philippines, Melanesia and Australia.
==Habitat== They live in tropical subtidal waters and in continental shelf at about {{convert|5|-|25|m}} of depth, usually on coral reef or under rocks.
==References== {{Reflist}}
==External links== * [https://www.biolib.cz/en/taxon/id143285/ Biolib] * [http://clade.ansp.org/obis/search.php/52631 Clade]
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Category:Cypraeidae Category:Gastropods described in 1832 Category:Taxa named by George Brettingham Sowerby I
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