478 
COROPHIIDtE. 
AMPHIPODA . 
NAT ATOM A. 
P 01) 0 CE RIDES. 
Subfamily— COROPHIIDES. 
Cephalon and pereion broader than deep. Inferior antennae 
subpediform, more powerful than the superior. Coxae small. 
Posterior pair of pleopoda subfoliaceous or styliform, not armed 
with spines. Telson squamiform, unarmed. 
The genera which belong to this subfamily are com- 
posed of animals in which the head and body are not 
laterally compressed. The coxae are small, consequently 
the animals being broader than deep are capable of 
walking in an upright position, both in and out of the 
water. The inferior antennae are stronger, and generally 
longer than the superior, they never terminate in a 
multi-articulate flagellum, but assume much of the form 
of a true leg, and are made use of in climbing and 
grasping substances. The last pair of caudal appendages 
are never furnished with hook-like spines, but termi- 
nate in styliform or subfoliaceous branches, which are 
generally very short, and in some genera rudimentary. 
The central tail-piece is always single, and scale-like, 
and is never armed with hooks or spines. 
