Oceanida
Oceanida is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae.
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
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.Species
Species within this genus include:Oceanida abrejosensis Bartsch, 1917Oceanida confluens Bouchet & Warén, 1986Oceanida corallina Hedley, 1912Oceanida 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, 1946Oceanida hypolysina Melvill, 1904Oceanida inglei Lyons, 1978 - distributed in North America; Western Atlantic OceanOceanida lampra Melvill, 1918Oceanida mindoroensis Adams & Reeve, 1850Oceanida whitechurchi Turton, 1932;Species brought into synonymy:Oceanida burryi : synonym of Oceanida graduata de Folin, 1871Oceanida catalinensis : synonym of Pseudosabinella bakeri Oceanida lepida : synonym of Leiostraca pygmaea A. Adams, 1864Oceanida ovalis de Folin, 1884: synonym of Doliella nitens' Oceanida pumila A. Adams, 1864 Oceanida tumerae Laseron, 1955: unpublished combination for Hebeulima tumere Laseron, 1955)Oceanida scalaris : synonym of Oceanida graduata de Folin, 1871