OP CONCHOLOGY. 143 



C. 



Calcareous, relating to lime, of a limy 

 nature. 



Callus, is composed of two short ribs, 

 united at the base, and converging 

 at the apex towards the hinder part 

 of the shell. 



Campanulate, shaped like a bell. 



Canaliculated, made like a pipe or 

 gutter 



Cancellated, surrounded with arched 

 longitudinal ribs. 



Cancelled, latticed, or having longi- 

 tudinal streaks or furrows, decus- 

 sate by transverse ones. 



Capacious, wide, vast, extended. 



Carinate, having a longitudinal pro- 

 minence like the keel of a vessel. 



Carinated, keeled. 



Cartilage, a flexible fibrous substance 

 by which the valves are united, 

 situate near the beak. 



Cauda, the elongated base of the 

 ventre, iip and columella. 



