476 
OOROPHIIDiE. 
AMPH1PODA. PODOCERIDES. 
NATATORIA. 
Specific character. Second pair of gnathopoda having the propodos with 
the palm deeply excavated towards the inferior angle. Dactylos with the 
inner margin serrated. 
Length \ inch. 
Ncenia excavata. Spence Bate, Cat. Amph. Brit. Mus. p. 272, pi. xlvi. 
%. 4. 
The antennae of the only specimen which we have 
seen of this species were broken off. In all respects 
the animal agrees with the preceding, except in the 
form of the second pair of hands, which have the 
palm deeply and broadly excavated near the inferior 
angle, a circumstance which has given rise to the specific 
name ; the finger is distinctly serrated. 
We received our specimen from Mr. Alder, who pro- 
cured it while dredging off the coast of Northumber- 
land. 
