CALLIANASSA SUBTERRANEA. 



217 



DECAPOD A. 



MACROVRA. 



TIIALASSINADjE. 



Gallianassa suhterranea. Leach. 



Specific Character. — Moveable finger of the larger claw, thick, obtuse ; wrist 

 and hand smooth. 



Cancer (^Astaciis) suhterratwus, 

 Callianassa siiLtcrrama, 



Mont. Trans. Lin. Soc. IX. t. iii. f. 1, 2, p. 89. 

 Leach, Edinb. Encycl. VII. p. 400 — Ed. 



Trans. Lin. Soc. XI, p. 341.— Malac. Brit. 



t. xxii.— Edw. Hist. Nat. Crust. II. p. 309. 



The carapace is much flattened at the sides, rounded 

 above, very smooth ; the rostrum minute. The eyes 

 very small. The external antenna with a long peduncle : 

 the terminal and antecedent joints nearly cylindrical ; the 

 basal joint pyramidal. The internal antennae have the 

 peduncle as long as the terminal portion, which is double. 

 The external pedipalps are rather broad, pediform ; the 

 terminal joint acute, curved. The first pair of feet very 

 unequal : the larger, which is sometimes the left, some- 

 times the right, is very large, flattened, polished, ciliated 

 on the edges ; the arm is furnished, on the inner side 



