P. miniaceus.
P. pusio.
P. hybridus.
P. sulphureus.
P. lividus.
P. glaber. The glabrous Scallop. Pl. [15], fig. 4.
Species of which the two valves are ribbed and almost equally convex, the right a little less, and having its inferior ear less broad than the left, so as to produce a kind of groove for the passage of the byssus.
P. Jacobæus. The scallop of St. James.
Species very inequivalve; the left valve being very flat, the right convex; ears equal.
P. pleuronectes. The sole Scallop.