PROPEAMUSSIIDAE  

Parvamussium obliquum

(Smith, 1885)

Figure(s)

   

Holotype (rv)

Original name   Amussium obliquum Smith, 1885
Autoreference   Smith, 1885: 313, pl. 23, figs 6-6a.
Reference   Smith, E.A., 1885. Report on the Lamellibranchiata collected by H.M.S. "Challenger" during the years 1873-1876. - Challenger Reports, Zoology, 13 (35): 1-341.
Type data   Holotype (rv: H 2.75 mm, L 3.0 mm) The Natural History Museum, London (BMNH 1887.2.9.3324).Type locality: West Indies, off Culebra Island, 18*38'30"N, 65*05'30"W, 713 m, dead, pteropod ooze, 25.iii.1873 ("Challenger" stn 24).
Description

  Shell small up to ca. 3 mm high, fragile, semi-transparent, weakly inflated, oblique, strongly inequilateral, auricles unequal in size and shape, colourless.

  Right valve umbonal area smooth and glossy, central to ventral area with closely spaced fine commarginal lirae. Internal riblets 16, commencing in central area. Byssal notch nearly lacking, byssal fasciole narrow.

Distribution

 

West Indies (TL)

Habitat  Shell bathyally on soft bottom assemblages.