476 



AMPH1PODA. 



NATATORIA. 



PODOCERIDES. 



NCENIA EXCAVATA. 



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. 

 fig. 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. 



