472 



AMPHIPODA. 



NATATORTA. 



COROPIIIIM. 



PODOCERIDES. 





NCENIA TUBERCULOSA. 



Specific character. Second pair of gnathopoda having the propodos with 

 the palm armed near the centre with a large double tubercle. 

 Length \ inch. 



Ncenia tuberculosa. 



Spence Bate, Cat. Amph. Brit. Mus. p. 271, pi. xlvi. 

 fig. 2. 



The body of the animal is rather long, and somewhat 

 compressed. The eyes are round, and not large. The 

 superior antennae are about half the length of the 

 animal; having the first joint of the peduncle as long 

 as the head, the second nearly as long again, whilst 

 the third is shorter than the first and slighter than the 

 second ; the flagellum is longer than the last two joints 

 of the peduncle. The inferior antennae are about the 

 same length as the superior ; the peduncle, having the 

 last two joints of nearly equal length, reaches as far as 

 the extremity of the peduncle of the superior; the 

 flagellum is about the length of the last joint of the 

 peduncle. The first pair of legs have the w r rist as long- 

 as the hand ; neither of these joints are much dilated ; 

 the hand is oval, with an oblique and imperfectly-defined 

 palm ; the finger is long, slight, and sharp, being deeply 

 serrated upon the inner margin. The second pair of 

 legs have the wrist very short, and the hand long and 

 broad ; the palm is oblique, defined by an angle, and 



