BIVALVES MYTILUS. 73 



Division VI. — Eared. 



Family 1. — Valves rather compressed. 



Scientific Name. Locality. Common Name. 



Margaritiferus- •• Amboyna, China Pearl Muscle ■ 



Radiatus Traiiquebar Rayed do ■ 



Unguis • • Mediterranean ISail do 



Family 2. — With one valve more convex than the other. 



Hirundo West Indies.Ceylon, Mau- 

 ritius, Britain Swallow --do- 



Morio Red Sea Mulberry • • do • 



Ala-corvi South Seas Crow's wing do • 



Division Wl.— -Shell suborbicular, longitxidinalhj striated, and 

 margin crennlated. 



Faba Greenland Bean do • • 



Division VIII. — Somewhat tongue-shaped, apices acute. 



Lingua • • Amboyna Tongue • • • do 



Camellii Japan Camellius' • do 



