472 
COROPHIIDiE. 
A MPHIP OB A . p OBOCERIBES. 
NATATORIA. 
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 wrist 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 
