Oceanida

Oceanida
Shell of Oceanida graduata. Origin: Guadeloupe, syntype at National Museum of Natural History, France
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Vanikoroidea
Family: Eulimidae
Genus:
de Folin, 1870
Type species
Oceanida graduata
de Folin, 1871
Synonyms[1]
  • Athleenia Bartsch, 1946
  • Spiroclimax Mörch, 1875

Oceanida is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae.[1]

This genus was described by Léopold de Folin in 1870. These are subtidal snails that are parasitic on echinoderms. Their length varies between 2 and 3 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 displays an auriculate shape. The outer lip is thickened, featuring a sigmoidally margined profile that curves inward towards the suture. The columella is moderately thick, adorned with a funicular cord and exhibiting minimal plication. The protoconch is polished and positioned at a right angle.[2]

Species

Species within this genus include:[1]

  • Oceanida abrejosensis Bartsch, 1917
  • Oceanida confluens Bouchet & Warén, 1986
  • Oceanida corallina Hedley, 1912
  • Oceanida faberi De Jong & Coomans, 1988 - the common labeo - found from Aruba to Northeast Brazil.
  • Oceanida graduata de Folin, 1871 - the shouldered eulima - distributed in North America; Western Atlantic Ocean; synonyms : Spiroclimax scalaris Mörch, 1875; Athleenia burryi Bartsch, 1946
  • Oceanida hypolysina Melvill, 1904
  • Oceanida inglei Lyons, 1978 - distributed in North America; Western Atlantic Ocean
  • Oceanida lampra Melvill, 1918
  • Oceanida mindoroensis Adams & Reeve, 1850
  • Oceanida whitechurchi Turton, 1932
Species brought into synonymy
  • Oceanida burryi (Bartsch, 1946): synonym of Oceanida graduata de Folin, 1871
  • Oceanida catalinensis (Bartsch, 1920) : synonym of Pseudosabinella bakeri (Bartsch, 1917)
  • Oceanida lepida (A. Adams, 1864): synonym of Leiostraca pygmaea A. Adams, 1864
  • Oceanida ovalis de Folin, 1884: synonym of Doliella nitens' (Jeffreys, 1870)
  • Oceanida pumila A. Adams, 1864 (taxon unverified- still inquarantine at WoRMS)
  • Oceanida tumerae Laseron, 1955: unpublished combination for Hebeulima tumere Laseron, 1955)
  • Oceanida scalaris (Mörch, 1875): synonym of Oceanida graduata de Folin, 1871

References

  1. ^ a b c Oceanida de Folin, 1870. Retrieved through: World Register of Marine Species on 5 January 2019.
  2. ^ Mörch, O.A.L. (1875). "Synopsis molluscorum marinorum Indiarum occidentalium imprimis insularum danicarum". Malakozoologische Blätter. 22: 168. Retrieved 12 February 2025. This article incorporates text from this source, which is in the public domain.