PROPEAMUSSIIDAE  

Propeamussium steindachneri

(Sturany, 1901)

Figure(s)

   

                                                  

Figured syntypes

 

Original name   Amussium steindachneri Sturany, 1901
Autoreference   Sturany, 1901: 269, pl. 4, figs 9-12.
Reference   Sturany, R., 1901. Lamellibranchiaten des Rothen Meeres. Denkschriften der Mathematisch-Naturwissenschaftliche Classe der Kaiserlichen Akademie der Wissenschaften 69: 255-295.
Type data   Largest syntype (lv: H 14 mm, L 13.7 mm). Museum of Natural History, Vienna (NHM, not yet registered]. Type locality: S Red Sea, near Akik Seghir, 18*7.7'N, 39*11.2'E, 457 m, sandy mud, 23.x.1897 ("Pola 2" stn 128); W of Kunfuda, 19*17'N, 39*37'E, 439 m, mud, 24.x.1897 ("Pola 2" stn 130).
Description

  Shell up to ca. 16 mm high, semi-transparent to opaque, weakly inflated, circular, left valve slightly more convex than right valve, nearly equivalve and equilateral, auricles smooth and nearly equal in size, colour whitish.

  Left valve with irregularly spaced, delicate radial lirae throughout.

  Right valve with regularly spaced commarginal lirae. Internal ribs 9 and an auricular riblet on each side, sometimes a rudimentary intercostal riblet near margin. Byssal notch and ctenolium lacking.

Distribution

 

Red Sea (TL), Gulf of Oman

Habitat  Living bathyally on soft bottom assemblages.