54 



GAMMAR1DJE. 



AMPHIPODA. 



NATATORIA. 



STEOOCEPHA LIDES. 



MONTAGUA MONOCULOIDES. 



Specific character. Second \)&\r of gn&thoyoda, having the propodos twice 

 a,s long as broad, palm oblique, smooth, slightly convex, denned by a very 

 obtuse angle armed with two sharp short spines. 



Length, ^ of an inch. 



Cancer (Gammarus) 

 Montagua monoculoides, 



Typkis (?) monoculoides, 



MONTAGU, Trans. Linn. Soc. vol. xi. p. 4, 



pi. ii. fig. 3. 

 SPENOE BATE, Rep. Brit. Assoc. 1855, 



p. 57. Synop. Brit. Amph. Ann. Nat. 



Hist. 1857, xix. 137. Cat. Brit. Mus. 



p. 55, pi. viii. fig 4. 

 MILNE-EDWARDS, Ann. Sci. Nat. t. xx. 



Aug. 1830. WHITE, Cat. Brit. Crust. 



in Brit. Mus. 1850, p. 58. GOSSE, 



Mar. Zool. p. 140, fig. 252. 



THE head produced anteriorly into a small depressed 

 rostrum. The back smooth. The eyes are round, and 

 of a red colour. The superior antennae have each joint 

 of the peduncle successively reduced in size, the flagellum 



