CUMACEA FEOM THE COPENHAGEN MUSEUM. 363 



orifices. The surface of the carapace bears irregularly scattered small spines or 

 tubercles interspersed with short hairs. 



The first leg-bearing somite is almost entirely concealed ; the remaining thoracic 

 somites are broad and depressed, with a few small tubercles on the dorsal surface and 

 on tlie pleural plates. 



The abdomen is a little shorter than the cephalothoracic region. The somites are 

 short and stout, the penultimate not longer than the preceding and shorter than the 

 last somite, which is acutely pointed in the middle line posteriorly ; they bear a few 

 tubercles and short hairs. 



The antennules have a rather stout peduncle, with two spines at the distal end of 

 the first segment. 



The third maxilliped has a well-developed exopod. 



The posterior legs are rather long and slender. In the fifth pair the basis is about 

 two-fifths as long as the distal segments together, the carpus is nearly three times as 

 long as the merus and a little longer than the propodus ; the dactylus, together with 

 its strongly curved claw, is about three-fourths as long as the propodus. 



The peduncle of the nropods is about half as long as the last somite and not much 

 longer than broad, irregularly toothed on the outer and inner edges. The endopod is 

 about two and a half times as long as the peduncle, strongly serrated on both edges, 

 with a stout terminal spine of nearly half its length, and a small spine close to it at 

 the distal end of the inner edge. The exopod is a little less than half as long as the 

 endopod, and its slender terminal spine reaches beyond the end of the latter. 



Occurrence. — " Paumben, India, 1-5 fathoms, K. Fristedt Coll." Copenhagen 

 Museum. 



ScHizoTREMA soRDiDUM, sp. n. (Plate XXXIV. figs. 22-24.) 



Bescriftion of adult Female. — Total length 1 mm. 



Carapace nearly two-fifths of total length, rather broad and depressed. The 

 pseudorostrum, seen from the side, is short and truncate, directed obliquely upwards ; 

 seen from above the two parts of the pseudorostrum surrounding the respiratory 

 orifices are completely separated ; the branchial siphons are long. The antenna! 

 notch is obsolete, the antero-lateral corner is produced into a slender point bearing a 

 transparent apical spine. The darkly-pigmented eyes lie just behind the branchial 

 openings ; the number of corneal facets could not be determined. The surface of the 

 carapace is sparsely covered with long hairs, but no spines were observed. 



The free thoracic somites are broad and depressed, their pleural plates carrying 

 long hairs and a few transparent and inconspicuous spines. 



The abdominal somites are beset with long hairs, but these do not form a distinct 

 lateral fringe as in S. depressum. The last somite is a little shorter than the 

 penultimate and is rounded posteriorly. 



