PECTINIDAE

Parvamussium molokaium

(Dall, Bartsch & Rehder, 1938)

Figures

 Holotype (rv)                                                              © Dr E. Strong - NMNH

                          

Original name   Propeamussium molokaium Dall, Bartsch & Rehder, 1938
Autoreference   Dall, Bartsch & Rehder, 1938: 82, pl. 20, fig. 8, pl. 21, figs 5-6.
Reference   Dall, W.H., P. Bartsch & H.A. Rehder, 1939. A manual of the Recent and fossil marine pelecypod mollusks of the Hawaiian Islands. - Bulletin of the Bernice P. Bishop Museum 153: i-iv, 1-233, pls 1-58.
Type data   Holotype (rv: H 7.2 mm, L 7.4 mm) Unites States National Museum (USNM 335677). Type locality: Hawaiian Islands, off S-coast Molokai, 21*08'N, 157*00'W, 24 m, dead, yellow sand bottom, 03.iv.1902 (USBFS "Albatross" stn 3837).
Description

  Shell small up to ca. 7 mm high, fragile, semi-transparent whitish, weakly inflated, subcircular, almost equilateral, auricles unequal in size and shape, umbonal angle ca. 105 degrees.

  Right valve disc and auricles sculptured with narrow spaced, delicate commarginal lamellae. Internal riblets 17, irregularly placed. Byssal notch relatively deep, byssal fasciole narrow.

Distribution

 

Hawaiian Islands (TL)

Habitat   Shell sublittorally on yellow sand.