PECTINIDAE

Parvamussium maorium

Dell, 1956

Figures

 

   

Holotype (rv)

                          

Original name   Parvamussium maorium Dell, 1956
Autoreference   Dell, 1956: 20, pl. 4, figs 30, 31 (P. maoria in caption)
Reference   Dell, R.K., 1956. The archibenthal Mollusca of New Zealand. - Dominion Museum Bulletin 18: 1-235.
Type data   Holotype (rv: H 12.0 mm, L 10.5 mm) Museum of New Zealand Te Papa Tongarewa (NMNZ M.9171). Type locality: New Zealand, off Otago Peninsula, Karitane Canyon, 45*37.5'S, 171*06.0'E, 476-640 m, dead, 28.iii.1954 (MV "Alert" stn 54-17).
Description

  Shell small up to ca. 15 mm high, fragile, semi-transparent white, weakly inflated, somewhat higher than wide, inequivalve, almost equilateral, auricles unequal in size and shape, umbonal angle ca. 100 degrees.

  Left valve sculptured with irregularly spaced, very weak and fine radial threads (more prominent posteriorly). Hinge line straight. Right valve with closely spaced, commarginal sculpture. Hinge line raised. Internal riblets 9 or 10, extending to marginal apron. Byssal notch relatively deep, byssal fasciole narrow.

Distribution

 

New Zealand (TL)

Habitat   Living bathyally on soft bottom assemblages.