493 COROPHIID.E. 



AMPIIIPODA. PODOCERIDES. 



NATATORIA. 



Genus— COROPHIUM. 



CoropJiium. Latreille, Gen. Crust, et Ins. i. p. 58. Leach, Edin. Ency. 

 vii. p. 403. Linn. Trans, xi. p. 362. Desmarest, Cons, 

 sur les Crust, p. 270. "White, Pop. Hist. Crust, p. 193. 

 Bruzelics, Skand. Amph. Gam. p. 14. Gosse, Mar. Zool. 

 i. p. 141. Spence Bate, Ann. Nat. Hist. 2 ser. xix. 

 p. 149. Cat. Ampli. Brit. Mus. p. 279. 



Generic character. Pereion not compressed. Eyes small. 

 Superior antennas tei-minating in a multiarticulate flagellum. 

 Inferior antennse very large, subpecliform, terminating in a 

 flagellum destitute of articuli. First pair of gnathopoda sub- 

 chelate ; second pair not subcheliform. Posterior pair of 

 pleopoda terminating in a single branch. Telson squamiform. 



In this genus the body of the animal is not com- 

 pressed. The eyes are small. The superior antennae 

 are shorter than the inferior, and terminate in a multi- 

 articulate flagellum. The inferior antennas are longer 

 and much more powerful than the upper, particularly 

 in the male. The coxa; are very small. The first pair 

 of gnathopoda are subchelate ; the second are slender 

 in the male, but somewhat more robust in the other sex. 

 The last pair of legs are much longer than the others. 

 The caudal appendages are very short, the last being the 

 shortest, and terminating in a single branch. The central 

 tail-plate is scale-like and single. 



This genus appears to be confined to the Northern 

 Hemisphere — a doubtful, but nearly-allied, species (C 

 quadriceps) taken at Rio Janeiro, by Dana, being the only 

 representative yet known from the southern seas. 



