AMPHIPODA. 



NATATORIA, 



CERAPUS DIFFORMIS. 457 



PODOCERIDES. 



CERAPUS DirroRMis. 



Specific character. Male. — Anteniite siibequal. Second pair of gnatho- 

 poila having the carpus longer than the pi-opodoa, and the extremity of the 

 iufero-anterior process single -pointed. 



Length rjg inch. 



Female. — Second pair of gnathopoda with the wrist rather broader but 

 not longer than the propodos, having the infero-anterior angle wide, and 

 slightly produced as a plate along the inferior margin of the propodos. 



Length 5^5 inch. 



Ericthon'ms difformis. Milne Edwards, Ann. des So. Nat. t. xx. p. 382. 



Hist, des Crust, t. iii. p. 60, pi. xxix. fig. 12. 

 Cerapus difformis. Spence Bate, Cat. Amph. Brit. Mus. p. 265, pi. xlv. 



fig. 5. 



The male of this species bears a general resemblance 

 to the preceding. The eyes are round, small, and black. 

 The superior antennas are rather more than half the 

 length of the animal. The inferior antennae are nearly 

 as long as the superior. The first pair of legs are small. 



