492 
COROPHIIDJE. 
AMPHIPODA. 
NAT ATOM A. 
PODOCERIDES. 
Genus— COROPHIUM. 
Corophium. Latreille, Gen. Crust, et Ins. i. p. 58. Leach, Edin. Ency. 
vii. p. 408. Linn. Trans, xi. p. 362. Desmarest, Cons, 
sur les Crust, p. 270. White, Pop. Hist. Crust, p. 193. 
Bruzelius, Stand. Amph. Gam. p. 14. Gosse, Mar. Zool. 
i. p. 141. Spence Bate, Ann. Nat. Hist. 2 ser. xix. 
p. 149. Cat. Amph. Brit. Mus. p. 279. 
Generic character. Pereion not compressed. Eyes small. 
Superior antennge terminating in a multiarticulate flagellum. 
Inferior antennae very large, subpediform,' 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 antennae are longer 
and much more powerful than the upper, particularly 
in the male. The coxae 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. 
