p.6

Donax variabilis, Say, Jour. Acad. Nat. Sc. vol. 2 p. 305; DeKay, Nat. Hist. of N. York, p. 212

Shell triangular; anterior margin obliquely truncated, cordate; suture a little convex; posterior hinge margin nearly straight; base a little prominent beyond a regular curve near the middle; valves striated longitudinally with scarcely visible paeallel impressed lines; basal edge crenate.

L. 0.9 H 0.5