484 
COROPHTLDvE. 
A M PH IPOD A . 
NATAT0R1 A . 
PODO CD RIDES. 
Genus— CRATIPPUS. 
Cratippus. Spence Bate, Cat. Araph. Brit. Mus. p. 275. 
Generic character. Antennae short, subequal ; flagella rudi- 
mentary. Superior antennae 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 antennae 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 antennae. 
