Genus Poumea n. gen.

TYPE SPECIES. — Poumea coselia n. sp. (here designated).

ETYMOLOGY. — Derived from Poum, the type locality of Poumea coselia n. sp.

DIAGNOSIS. — Shell small, subcircular, umbones prominent. Sculpture of regularly spaced, thin, commarginal lamellae. Lunule asymmetric, larger in left valve. Two cardinal teeth in each valve. Anterior lateral teeth present, posterior laterals absent. Anterior adductor scar long, detached from pallial line for 3/4 of length.

REMARKS

Although superficially resembling Myrtea and Notomyrtea, this new genus differs in having two cardinal teeth in each valve and a much longer anterior adductor muscle scar. Also, it lacks the radial riblets between the commarginal lamellae of Notomyrtea species (see Fig. 5).