ANONYX LONGICORNIS. 



91 



AMPHIPODA. 



NATATOUIA. 



LYSIANASSIDES. 



ANONYX LONGICORNIS. 



Specific character. Central dorsal line slightly carinated. Third seg- 

 ment of the pleon tuberculated at the posterior dorsal margin. Inferior 

 antennae longer than the animal. Telson very long and deeply cleft. 



Length \ in. 



Anonyx longicornis. SPENCE BATE, Cat. Amph. Brit. Mus. p. 72, pi. xi. 

 fig. 4. 



THIS animal in its general form differs considerably 

 from the type of the genus, which is round and smooth, 

 while this puts on an angulated appearance. The head 

 is produced a little in front, the back is slightly carinated 

 through the entire length of the animal, the tenth seg- 

 ment (N) of the body is posteriorly produced to a tuber- 

 cle, and a deep sinus indents the anterior dorsal portion 

 of the next, which is also posteriorly elevated into a long 

 tubercular ridge. 



