40 



BIVALVES DON AX. 



Division IV. — Smooth. 



Scientific A'arne. Locality. Cfmtman, Name. 



Complanata -•'•- Germany, Great Britain • Single rayed D. 



Laevigata Tranquebar Smooth • • • do • 



Scripta E. Indies, Mediterranean Lettered • • do • 



• Stultorum Indian Seas Foolish • • • • do • 



Division V. — Shell with transverse membranaceous ridyes. 



Ii'us Britain, Mediterranean • • Ragged- • • • do • 



