(Dall, Bartsch & Rehder, 1938)
Holotype © Dr E. Strong - NMNH
|Original name||Propeamussium kauaium Dall, Bartsch & Rehder, 1938|
|Autoreference||Dall, Bartsch & Rehder, 1938: 80, pl. 19, figs 4-7, pl. 20, figs 1-2.|
|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 (pr: H 10.0 mm, L 9.9 mm, D 2.0 mm) Unites States National Museum (USNM 173218). Type locality: Hawaiian Islands, near Kauai, 22*03'N, 159*30'W, 684-730 m, alive, dredged, coral, sand, foraminifera, rock, 21.vi.1902 (USBFS "Albatross" stn 4022).|
Shell small up to ca. 10 mm high, fragile, semi-transparent white, weakly inflated, circular, inequivalve, almost equilateral, auricles unequal in size and shape, umbonal angle ca. 100 degrees.
Left valve sculptured with widely spaced, hollow commarginal cords with delicate closely spaced intercalated radial threads. Right valve with closely spaced, commarginal lirae. Internal riblets 10, extending to apron. Byssal notch relatively deep.
Hawaiian Islands (TL)
|Habitat||Living bathyally on sand with coral rubble, rocks and foraminifera.|