|Original name||Pecten (Pseudamusium) polyleptus Dall, 1908|
|Autoreference||Dall, 1908: 403, pl. 10, fig. 9.|
|Reference||Dall, W.H., 1908. Reports on the dredging operations off the West coast of Central America to the Galapagos, to the West coast of Mexico, and in the Gulf of California, [...] by the [...] "Albatross" [...] and Reports on the [...] Expedition to the eastern tropical Pacific [...] by the [...] "Albatross" [...] Reports on the Mollusca and Brachiopoda. - Bulletin of the Museum of Comparative Zoology 43: 205-487, 22 pls.|
|Type data||Holotype (rv: H 9.5 mm, L 9.5 mm) Smithsonian Institution, National Museum of Natural History, Washington DC (USNM 110586). Type locality: Galapagos Islands, SE of Isla Espanola, 01*30'30"S, 89*35'00"W, 549 m, dead, globigerina sand, 07.xi.1904 (RV "Albatross" stn 4642).|
Shell up to ca. 10 mm high, thin, circular, weakly inflated, equilateral, anterior auricle larger than posterior, umbonal angle ca. 95 degrees, semi-transparent, whitish.
Right valve with antimarginal microsculpture and ca. 36 radial rows of scales, more prominent near margin. Posterior auricle continuous with disc and anterior auricle demarcated from disc with 5 radial rows of scales and commarginal striation. Byssal notch deep, byssal fasciole broad, ctenolium well-developed with 3 teeth.
Left valve described by Grau (1959: 43) probably belongs to this species.
Galapagos Islands (TL)
|Habitat||Probably living bathyally on soft bottom assemblages.|