CARINARIA 



There are two species of this remarkable Genus^ one 

 of which has very rarely been brought from Amboyna, 

 the other is not uncommon in the Mediterranean. 



Shell univalve, nearly equilateral, very thin, trans- 

 parent as glass, and extremely fragile, conical, with a 

 reflected, convoluted vertex, sides compressed, back with a 

 single keel; aperture oblong, entire, its dorsal end acumi- 

 nated. 



We have given two views of Carinaria Mediterra- 



nea. 



