Shell small, pellucid, subquadrate, with the ends bluntly rounded and the dorsal and ventral margins nearly parallel; beaks low, valves compressed, very inequilateral, the beaks being nearly at the posterior fifth of the shell; left anterior lamina very long, rather elevated, with a very small hook, posterior lamina short, nearly obsolete, with an elongated resiliary pit below it; adductor scars small, high up, the anterior narrower, the posterior rounder;1 pallial scar linear; surface polished,smooth,or marked only by incremental lines and very obscure occasional radial striulations. Long. 5, alt. 2.8, diam. 1 mm.

A single left valve was dredged in 22 fathoms off Cape Lookout, North Carolina, on sandy bottom