p.1

Genus Cumingia, Broderip & Sowerby.
P. 3p 414
DeKay, Nat. Hist N.Y. p 233.

Shell ovate, inequilateral, equivalve, a hollow spoon shaped cardinal toorth, and a single small tooth by its side, in each valve; and a strong lateral tooth on both sides in one valve only; palleal impression with a large sinus.