PROPEAMUSSIIDAE  

Parvamussium retiaculum

Dijkstra, 1995

Figures

 

       rv                     Holotype                           lv

Original name   Parvamussium retiaculum Dijkstra, 1995
Autoreference   Dijkstra, 1995: 28, figs 35-38.
Reference   Dijkstra, H.H., 1995. Bathyal Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae, Pectinidae) from New Caledonia and adjacent areas. In: P. Bouchet (ed.), Résultats des Campagnes MUSORSTOM, volume 14. - Mémoires du Muséum National d'Histoire Naturelle 167: 9-73, figs 1-154.
Type data   Holotype (pr: H 7.3 mm, L 7.2 mm, D 1.9 mm) Museum National d'Histoire Naturelle, Paris (MNHN). Type locality: S New Caledonia, 23*05'S, 167*45'E, 680-700, alive (BIOCAL stn 51).
Description

  Shell small up to ca. 7 mm high, fragile, semi-transparent white, inflated, circular, slightly higher than wide, left valve slightly more convex than right valve, inequivalve, nearly equilateral, auricles strongly unequal in size and shape, umbonal angle ca. 100 degrees.

  Left valve sculptured with 14 widely spaced, commarginal lamellae and delicate widely spaced, radial riblets. Anterior auricle with commarginal delicate lamellae. Right valve with regularly spaced, fine commarginal lirae. Anterior auricle strongly sculptured near lateral margin with commarginal lamellae. Byssal notch relatively deep, byssal fasciole narrow. Internal riblets 12 commencing in late growth stage and extending to the submarginal region.

Distribution

 

S New Caledonia (TL)

Habitat   Living bathyally on soft bottom assemblages.