84 Notes on Species of Corlticuladce. 



profunde fissis, dente laterali antico conico ; ligamento elongato, partim 



Oyrena Bernardiiana. 



in fosso; umbonibus inclinatis, parvulis ; sulcis obsoletis ; epiderrnide 

 viridi, nitente vestita. 



Long. 65 ; lat. 57 ; diam. 38 mill. 



Hob. — ISTova Caledonia. Collect. Prime. 



The shell is transversely-oval, subtrigonal, nearly equilateral, 

 and inflated, more especially so in the centre of the discs. The 

 posterior margin is somewhat abrupt at the extremity. The 

 other margins are rounded. The valves are solid. The interior 

 is white. The hinge is somewhat narrow. The cardinal teeth 

 are rather slight and divergent, and the principal ones are 

 bifid. The anterior lateral tooth is conical, the posterior lateral 

 tooth is narrow, somewhat elongated and compressed. The 

 beaks are small. The epidermis is bright green and polished. 

 The striae are more or less obsolete. The folds on the posterior 

 side are coarse and irregular. 



