# Oceanida

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{{Short description|Genus of gastropods}}
{{Use dmy dates|date=May 2024}}
{{Automatic taxobox
|image =Oceanida graduata (MNHN-IM-2000-5657).jpeg
|image_caption =Shell of ''Oceanida graduata''. Origin: [Guadeloupe](/source/Guadeloupe), syntype at [National Museum of Natural History, France](/source/National_Museum_of_Natural_History%2C_France)
|taxon = Oceanida
|authority = [de Folin](/source/L%C3%A9opold_de_Folin), 1870
|synonyms_ref = <ref name="WoRMS" />
|synonyms =
* ''Athleenia'' <small>Bartsch, 1946</small>
* ''Spiroclimax'' <small>Mörch, 1875</small>
|type_species = ''Oceanida graduata''
|type_species_authority = de Folin, 1871
|display_parents= 3
}}

'''''Oceanida''''' is a [genus](/source/genus) of very small parasitic [sea snail](/source/sea_snail)s, [marine](/source/marine_(ocean)) [gastropod](/source/gastropod) [mollusk](/source/mollusk)s or [micromollusk](/source/micromollusk)s in the [family](/source/Family_(taxonomy)) [Eulimidae](/source/Eulimidae).<ref name="WoRMS">{{WRMS species|137982|''Oceanida'' de Folin, 1870||5 January 2019}}</ref>

This genus was described by [Léopold de Folin](/source/L%C3%A9opold_de_Folin) in 1870. These are subtidal snails that are parasitic on [echinoderm](/source/echinoderm)s. Their length varies between 2 and 3&nbsp;mm.

==Description==
(Originally described in Latin as ''Spiroclimax'') The shell exhibits a subcylindrical form, characterized by transparency and a suture that resembles a gently descending spiral staircase. The [aperture](/source/Aperture_(mollusc)) displays an auriculate shape. The outer [lip](/source/Lip_(gastropod)) is thickened, featuring a sigmoidally margined profile that curves inward towards the suture. The [columella](/source/Columella_(gastropod)) is moderately thick, adorned with a funicular cord and exhibiting minimal plication. The [protoconch](/source/protoconch) is polished and positioned at a right angle.<ref>{{cite journal |last1=Mörch |first1=O.A.L. |title=Synopsis molluscorum marinorum Indiarum occidentalium imprimis insularum danicarum |journal=Malakozoologische Blätter |date=1875 |volume=22 |page=168 |url=https://biodiversitylibrary.org/page/15919003 |access-date=12 February 2025}} {{source-attribution}}</ref>

==Species==
Species within this genus include:<ref name="WoRMS" />
* ''[Oceanida abrejosensis](/source/Oceanida_abrejosensis)'' <small>[Bartsch](/source/Paul_Bartsch), 1917</small>
* ''[Oceanida confluens](/source/Oceanida_confluens)'' <small>Bouchet & Warén, 1986</small>
* ''[Oceanida corallina](/source/Oceanida_corallina)'' <small>[Hedley](/source/Charles_Hedley), 1912</small>
* ''[Oceanida faberi](/source/Oceanida_faberi)'' <small>De Jong & Coomans, 1988</small> - the common labeo - found from [Aruba](/source/Aruba) to Northeast Brazil.
* ''[Oceanida graduata](/source/Oceanida_graduata)'' <small>de Folin, 1871</small> - the shouldered eulima - distributed in North America; Western Atlantic Ocean; synonyms : ''Spiroclimax scalaris'' Mörch, 1875; ''Athleenia burryi'' [Bartsch](/source/Paul_Bartsch), 1946
* ''[Oceanida hypolysina](/source/Oceanida_hypolysina)'' <small>Melvill, 1904</small>
* ''[Oceanida inglei](/source/Oceanida_inglei)'' <small>[Lyons](/source/William_G._Lyons), 1978</small> - distributed in North America; Western Atlantic Ocean
* ''[Oceanida lampra](/source/Oceanida_lampra)'' <small>Melvill, 1918</small>
* ''[Oceanida mindoroensis](/source/Oceanida_mindoroensis)'' <small>Adams & Reeve, 1850</small>
* ''[Oceanida whitechurchi](/source/Oceanida_whitechurchi)'' <small>[Turton](/source/William_Turton), 1932</small>
;Species brought into synonymy:
* ''Oceanida burryi'' <small>(Bartsch, 1946)</small>: synonym of ''Oceanida graduata'' <small>de Folin, 1871</small>
* ''Oceanida catalinensis'' <small>(Bartsch, 1920)</small> : synonym of ''[Pseudosabinella bakeri](/source/Pseudosabinella_bakeri)'' <small>(Bartsch, 1917)</small>
* ''Oceanida lepida'' <small>(A. Adams, 1864)</small>: synonym of ''[Leiostraca pygmaea](/source/Leiostraca_pygmaea)'' <small>A. Adams, 1864</small>
* ''Oceanida ovalis'' <small>[de Folin](/source/L%C3%A9opold_de_Folin), 1884</small>: synonym of ''[Doliella nitens](/source/Doliella_nitens)''' <small>(Jeffreys, 1870)</small>
* ''Oceanida pumila'' <small>[A. Adams](/source/Arthur_Adams_(zoologist)), 1864</small> (taxon unverified- still inquarantine at WoRMS)
* ''Oceanida tumerae'' <small>[Laseron](/source/Charles_Francis_Laseron), 1955</small>: unpublished combination for ''[Hebeulima tumere](/source/Hebeulima_tumere)'' <small>Laseron, 1955)</small>
* ''Oceanida scalaris'' <small>(Mörch, 1875)</small>: synonym of ''Oceanida graduata'' <small>de Folin, 1871</small>

==References==
{{Reflist}}
* Jong, K. M. de and H. E. Coomans. 1988. ''Marine gastropods from Curaçao, Aruba and Bonaire'' Studies on the Fauna of Curaçao and other Caribbean Islands 69 1-261, 47 pls.
* [https://www.biodiversitylibrary.org/page/34137448 de Folin L. 1870. ''D'une méthode de classification pour les coquilles de la famille des Chemnitzidae''. Annales de la Société Linnéenne du Département du Maine et Loire 12: 191-202]
*Folin, L. de. 1871. Nouveau supplément aux mollusques de la Pointe-à-Pitre In: L. de Folin & L. Périer ed. Les Fonds de la Mer 1 263-265, pl. 24 Savy: Paris
*Morch, O. A. L. 1875. ''Synopsis molluscorum marinorum Indiarum occidentalium'' Malakozoologische Blätter 22 142–184.
* Lyons, W. G. 1978. ''Status of the genus Oceanida DeFolin (Gastropoda: Eulimidae), with a description of a new species'' Proceedings of the Biological Society of Washington 91 539–545.
*{{cite book| title=Checklists of Selected Shallow-Water Marine Invertebrates of Florida| url=https://scholar.google.com/scholar?hl=en&lr=&safe=off&cites=8215572848779594617| author1=David K.Camp| author2=William G. Lyons| author3=Thomas H. Perkins| name-list-style=amp| date=1998| publisher=Florida Department of Environmental Protection| location=St. Petersburg, FL| access-date=14 November 2016| archive-url=https://web.archive.org/web/20160127214009/http://scholar.google.com/scholar?hl=en&lr=&safe=off&cites=8215572848779594617| archive-date=27 January 2016| url-status=dead| df=dmy-all}}(.pdf document)

==External links==
*[https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=72531 ITIS]
*[http://www.gastropods.com/2/Shell_25092.shtml Photo of ''Oceanida faberi'']

{{Taxonbar|from=Q3171231}}

Category:Eulimidae
Category:Gastropod genera
Category:Taxa named by Léopold de Folin

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Adapted from the Wikipedia article [Oceanida](https://en.wikipedia.org/wiki/Oceanida) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Oceanida?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.