AND OTHER FAMILIES. 223 



GENUS APHRODITE (nobis). 



Testa sequioalvi, subtrigona, insequilaterali ; dente cardinali subnuUo ; dentibus 

 later alibus binis, sublongis ; ligamento externa. 



Shell equivalve, subtriangular, inequilateral ; hinge with a very imperfect or no car- 

 dinal looth ; lateral teeth two, rather long ; ligament external. 



Bemarks. — The genus Aphrodite is proposed for a single species 

 which I am unable to place with any established genus. I suspect it 

 to be an estuary shell, and should it prove so, its proper place will be 

 after the genus Cyrena. The lateral teeth are placed somewhat like 

 those in that genus, but the epidermis and substance of the shell differ 

 entirely, being more like the genus Maetra. 



A. coLUMBA. Plate XVIII. fig. 54. 



Testd subcompressd, loiigitudinaliter et obsolete striatd, transversim et minute 

 rugatu, colore columbie tinctd, super umbones subrufis muculis ungulatis immita ; 

 valvulis tenuibus ; natibus elevatis, acutis ; dentibus cardinalibus obsoletis, laterali- 

 bus binis ; margaritd luteo-albd. 



Shell rather compressed, longitudinally and obsoletely striate, transversely and mi- 

 nutely wrinkled, dove coloured, on the umbones furnished with reddish angular marks ; 

 valves thin ; beaks elevated, pointed ; cardinal teeth obsolete ; lateral teeth two ; nacre 

 yellowish white. 



Hab 



My Cabinet. 

 Diam. 1-4, Length 2-9, Breadth 3-4 inches. 



Shell subtriangular, nearly equilateral, rather compressed, longi- 

 tudinally and obsoletely striate, transversely and minutely wrinkled, 

 dove coloured, furnished on the umbones with reddish angular marks ; 

 substance of the shell thin and fragile ; beaks elevated, pointed, touch- 

 ing ; ligament short and thick ; epidermis thin ; cardinal teeth obsolete 

 or wanting ; lateral teeth two, rather long, straight, and disposed to be 



