PROPEAMUSSIIDAE  

Similipecten eous

(Melvill in Melvill & Standen, 1907)

Figure(s)

 

lectotype (lv)

paralectotypes (NMW 1955.158.673)

 

Original name   Pecten eous Melvill in Melvill & Standen, 1907
Autoreference   Melvill in Melvill & Standen, 1907: 808, pl. 55, fig. 9.
Reference   Melvill, J.C. & Standen, R., 1907. The Mollusca of the Persian Gulf, Gulf of Oman and Arabian Sea as evidenced mainly through the collections of Mr. F.W. Townsend, 1893-1906, with descriptions of new species, Part 2. Pelecypoda. - Proceedings of the Zoological Society of London 54: 783-848.
Type data   Lectotype (H 4.8 mm, L 5.0 mm) The Natural History Museum, London (BMNH 1907.5.3.18), designated by Dijkstra & Knudsen (1998: 50). Type locality: Gulf of Oman, 24*58'N, 56* 54'E, 285 m, shell-sand.
Description

  Shell up to ca. 5 mm high, very fragile, transparent or opaque milky white, weakly inflated, right valve more convex than left valve, nearly circular, inequivalve, nearly equilateral, auricles nearly equal in size, but unequal in shape, anterior auricles with delicate commarginal lamellae, posterior auricles smooth and continuous with disc. internal ribs lacking.

  Left valve smooth, sometimes with minute commarginal lirae near ventral margin.

  Right valve also smooth, with a microscopic granular structure. Byssal notch shallow, byssal fasciole and ctenolium lacking.

Distribution

 

Red Sea, Gulf of Aden, Arabian Sea, Gulf of Oman (TL), Persian Gulf

Habitat Living lower littorally and bathyally on soft bottom assemblages.