478 COROPHIID.E. 



A MP HIP OB A . P ODOCEPxIDES. 



NATATOJRJA. 



Subfamily COROPHTIDES. 



Cephalon and pereion broader than deep. Inferior antennas 

 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. 



