Poumea, Glover & Taylor, 2007

Glover, Emily A. & Taylor, John D., 2007, Diversity of chemosymbiotic bivalves on coral reefs: Lucinidae (Mollusca, Bivalvia) of New Caledonia and Lifou, Zoosystema 29 (1), pp. 109-181 : 124

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 ).

Figures

FIG. 5. — Notomyrtea vincentia n. sp., holotype (MNHN), Baie de St Vincent, New Caledonia (MNHN): A, B, exterior of right and left valves; C, protoconch; D, E, interior of right and left valves; F, detail of sculpture; G, H, detail of hinges of left and right valves. Scale bars: A, B, D, E, 5 mm; C, 75 µm; F, 1 mm; G, H, 2 mm.