O. erucella.
O. folium.
O. labrella.
O. imbricata.
O. hyotis.
O. radiata.
O. edulis. The eatable Oyster. Pl. [16], fig. 5.
Species orbicular, and not plaited; rugged, with undulated, imbricated scales; one valve flat and the other convex; variable in size; outside greenish brown, inside pearly white, sometimes with a bluish tinge.
O. Virginica. The Virginian Oyster.
Species longitudinal and not plaited.