CUMACEA FROM THE COPENHAGEN MUSEUM. 39 



Abdomen hardly longer than the cephalothoracic region. 



Antennules as in //. unip/icatus. 



The first legs are imperfect in the specimens examined. The second legs have the 

 ischium distinct. The dactylus is equal to tlie merus and carpus together. 



The uropods have the peduncle longer than tlie last somite and about 3^ times as 

 long as thick. The endopod is longer than the peduncle and shorter than the exopod, 

 and is distinctly divided into two segments, the proximal less than 1|- times as long 

 as the distal. There are about nine spines on the inner edge, increasing in length 

 towards the slender terminal spine. The exopod has two unequal terminal setse and 

 series of setae on the inner and outer edges. 



Description of adult Male. — Total length 2-7 mm. 



Dorsal edge of carapace slightly arched, smooth. Pseudorostrum horizontal, 

 truncated, about one-sixth of total length of carapace. No antennal tooth or notch, 

 antero-lateral corner rounded, no serrations on antero-lateral or lower edges. The 

 side of the carapace bears two oblique ridges similar to, but fainter than, those on the 

 carapace of the female. 



The antennae have the flagellum short, reaching to about the second free thoracic 

 somite in the natural position. 



Exopods are present on all except the last pair of legs. 



The uropods resemble those of the female. 



Occurrence. — "Lyttleton Harbour, 5/97, 1-5 fathoms, H. Suter." Copenhagen 

 Museum. 



