p.2

Acephala

Ostrea falcata, Morton.
Synopsis p. 50 Jour. Acad. Nat. Sc. vol. 6 pl. 1. fig 2 p 56 pl. 3 fig. 5 & pl. 9 figs. 6 & 7 Am Jour Sc vol 18 pl 3 fig 19 & 20 & vol 24 pl 9 fig 6 & 7. O. larva, Goldfus

Falciform, auriculated, thin, depressed; six or seven deep plications commence near the beaks, and terminate at the margin.

L. 0.5 to 1.75