THE CRABS. 



273 



animals the abdomen is short, flattened, and apt to escape 

 immediate notice, as it is habitually kept closely apphed 

 against the under surface of the ceplialothorax. It is 



3'. \ 



Fig. 72. Canrrr 2}nf/)!r)fs;,raale (^ nat. size). A, dorsal view, t\'ith the 

 abdomen extended ; B, front view of " face." as, antennary sternum ; 

 nr, orbit ; r, rostrum ; 1. eyestalk ; 2. antennule ; 3. base of antenna ; 

 3', free portion of antenna. 



