618 



PROCEEDINGS OF THE NATIONAL MVSEUM. 



ment more than twice as long as the distal, with the inner margin 

 spined; the distal segment is four times as long as wide. The 

 exopod is a little longer than the endopod and has slender spines or 

 setae on the inner edge and terminally but not on the outer edge. 

 Adult male. — Total length, G.4 mm. 



Carapace more than one-fifth of total length, the pseudorostrum 

 still shorter than in the female, the antennal notch shallower, and 



the antero-lateral angle more 

 broadly rounded. The tho- 

 racic somites present no con- 

 spicuous differences from 

 those of the female and the 

 abdominal somites are only a 

 little stouter. The antennular 

 peduncle is not dilated and has 

 no conspicuous distal brush of 

 hairs. The thoracic limbs pre- 

 sent no marked differences 

 from those of the female except 

 that large exopods are present 

 on the first four pairs of legs. 



There are only three pairs 

 of pleopods; the endopod of 

 each has a narrow process on 

 its outer margin. 



The uropods are similar to 



18 19 



Figs. 17-19.— Leptocuma minor, female. 17, Second 



leg; 18, FOURTH leg; 19, LAST SOMITE AND UROPOD. 



those of the female, but the 

 spines on the inner edge of the peduncle and endopod are more 

 numerous. 



Remarks. — This species resembles very closely the type of the 

 genus, but all the specimens examined differ from it in the fol- 

 lowing characters — the size of adult female specimens is less than 



Fig. 20.— Leptocuma minor, male, from the side. 



half that of adult females of L. I'inhergii; the lateral plates of the 

 pseudorostrum meet in front of the ocular lobe; the basis of the 

 third maxillipeds is distinctly produced at the distal outer corner; 

 the propodus of the first legs is not longer than the carpus; the 

 peduncle of the uropods is distinctly longer than either the last 



