54 



GAMMARIDtE. 



amphipoda. 



NATATORIA. 



STEGOCEPHA LIDES. 



MONTAGUA MONOCULOIDES. 



Specific character. Second pair of gnathopoda having the propodos twice 

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

 obtuse angle armed with two sharp short spines. 



Length, ^g of an inch. 



Cancer (Gammarus) monoculoides, Montagu, Trans. Linn. Soc. vol. xi. p. 4, 



pi. ii. fig. 3. 

 Spence 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. 



Montagua monoculoides. 



Typhis (?) monoculoides. 



The head produced anteriorly into a small depressed 

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

 of a red colour. The superior antennas have each joint 

 of the peduncle successively reduced in size, the flagellum 



