PROPEAMUSSIIDAE  

Propeamussium solitarium

(Smith, 1894)

Figure(s)

   

                                                  Syntype

lv - close up

 

Original name   Amussium solitarium Smith, 1894
Autoreference   Smith, 1894: 173, pl. 5, figs 11-12.
Reference   Smith, E.A., 1894. Natural history notes from H.M. Indian Marine Survey Steamer "Investigator", Ser. 2 (10). Report upon some Mollusca dregded in the Bay of Bengal and the Arabian Sea. - Annals and Magazine of Natural History, ser. 6, 14: 157-174.
Type data   Figured syntype (pr: H 16 mm, L 16 mm, D 4 mm). Zoological Survey of India, New Alipore, Calcutta (ZSI M7421/9). Type locality: Bay of Bengal, 12*20'N, 85*08'E, 3298 m, globigerina ooze, 15.xii.1890 ("Investigator" stn 118).
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

 

Bay of Bengal (TL)

Habitat  Probably living lower bathyally and abyssally on soft bottom assemblages.