152 



CRUSTACEA. 



and broad, flattened, unequal ; one of them toothed, 

 the other knobbed on the inner edges. 



H. vnlgaris. Fig. 286 ; n. s. 



FAMILY VI. THALASSINAD.E. 



Calocaris (Bell). First and second feet two- 

 fingered, slender, lengthened, flattened, the fingers 

 long and pointed ; the first much the larger ; cara- 

 pace very large, with a small triangular beak, 

 whence diverge backwards two lines of spines. 



C. Macandreae. Fig. 287 ; i n. s. 



Axius (Leach). First and second feet two- 

 fingered ; the hand of the first stout, ovate, un- 



