62 BIVALVES OSTREA. 



Scientific Name. Locality. Common Name. 



Gibba Soutli America, Africa, 



West Indies • • •■ Gibbous Scallop 



Turgida •• East & West Indies Turgid---- do •■ 



Pyxidata Malabar Box-like- • • do - • 



Flavicans Southern Ocean Yellow • - - • do - • 



Family 2. — Valves smooth. 



Tigrina - - Denmark Tyger - • 



Fuel Denmark Fucus • - • 



Exotica Red Sea Exotic-- 



Vitrea Norway • Glassy • • 



Obsoleta Britain Obsolete 



Laevis Ditto Smooth - 



Proteus Mediterranean Variable 



- do - 



- do .. 

 . do - 



■ do -. 



- do -. 

 . do -. 



- do •■ 



Division III. — Oblong, linear. 



Family 1. — With a transverse lobe on each side of the hinge. 



Malleus Pulo Condore, South Seas, 



Ceylon • . • • Hammer Oyster 



Family 2. — With a slight beak on one side the hinge, 

 Figurata Nicobar Isles - . Figured ... do - • 



Family 3. — Rounded at the hinge. 

 Regula Red Sea Tongue sliap'd do 



Family 4. — Valves diverging at the hinge, and the inside vaulted. 

 Fornicata Red Sea Vaulted ••• do • • 



