AMPHIPODA. 

 NATATORIA. 



ANONYX DENTICULATUS. 101 



LYSIANASSIDES. 



ANONYX DENTICULATUS. 



Specific character. — Third segment of tlie pleon produced on each side 

 into a tooth, which is directed upwards and backwards, at a right angle with 

 the inferior half of the posterior margin. Inferior antennaa more than half 

 the length of the animal. 



Length \ inch. 



Anonijx denticulatus. 



Spence Bate, Rep. Brit. Assoc. 1855, p. 58, Ann. 

 Nat. Hist. 2 ser. vol. xix. 139 (Feb. 1857.) Cat. 

 Amph. Brit. Mus. p. 74, pi. xii. fig. 2. White, 

 Pop. Hist. Brit. Crust, p. 171. 



The animal is proportionably long, and in general form 

 bears a considerable resemblance to Anonyx ampullo, from 

 which it may be readily recognized by the posterior mar- 

 gin of the last deep segment of the body being produced 

 on each side backwards and upwards into a long flat 

 tooth. The eyes in this species have not been observed 

 by us, having only seen dead specimens. The superior 



