484 COROPHTIDJE. 



AMPHJPODA. PODOCERIDES. 



NAT ATOM A. 



Genus CRATIPPUS. 



Cratippus. Spence Bate, Cat. Amph. Brit. Mus. p. 275. 



Generic character. Antennae short, subequal ; flagella rudi- 

 mentary. Superior antennse without secondary appendage. 

 Gnathopoda subchelate. Coxae small. Pereiopoda subequal. 

 Three posterior pairs of Pleopoda having short terminal rami. 

 Telson squamiform. 



In this genus the body of the animal is long and not 

 laterally compressed. The antennas are subequal, ter- 

 minating in very short flagella : the superior pair are not 

 furnished with a secondary appendage. The first two 

 pairs of hands are subchelate. The walking legs are 

 all nearly of the same length ; and the three pair of 

 caudal appendages have the terminal branches shorter 

 than their respective peduncles. The middle tail-piece 

 is, we believe, a flat, scale-like appendage. 



This genus differs from Corophium in the subchelate 

 character of the second pair of legs, and in the rudi- 

 mentary condition of the flagellum of the antennse. 



