348 DK. W. T. CALMAN OX NEW OR RAEE 



and two teeth in front of the middle. Tlie ocular lobe is prominent on the dorsal 

 surface and the eye is pigmented. The pseudorostrum is long, directed obliquely 

 upwards, and acutely pointed ; tlie lateral plates meet in front of the ocular lobe for a 

 distance much greater than the diameter of the lobe. The antero-lateral margin is 

 concave and the lower corner is nearly rectangular. The surface of the carapace and 

 of the rest of the body bears rather numerous scattered hairs. 



The abdomen is a little shorter than the cephalothorax. The last somite is about 

 equal in length to the preceding, not inflated ; seen from above it increases only slightly 

 in width posteriorly, and is produced as a broad rounded lobe for some distance between 

 the bases of the uropods. 



The antennules have the peduncle rather slender, the last segment being more than 

 three times as long as thick, and the inner flagellum minute and unsegmented. 



The first legs have the basis a little less than two-thirds as long as the remaining 

 segments ; that of the second legs is about two-thirds as long as the remaining 

 segments. 



The remaining legs are slender ; the last pair are a little shorter than the carapace 

 and have the carpus three times as long as the merus and four-fifths as long as 

 the basis. 



The uropods have the peduncle about three-fourths as long as the last somite. The 

 straight endopodite, together with the terminal spine which is indistinctly marked off 

 from it, measures a little more than the length of the peduncle and is longer by 

 one-fourth than the exopodite. There are two spinules on the inner edge of the 

 endopodite and two on that of the peduncle. 



Occurrence. — Gulf of Siam, "Koh Kam, 5 fathoms, 6/2/00." Th. Mortensen Coll., 

 Copenhagen Museum. Co-types in British Museum. 



CUMELLA SEERATA, sp. n. (Plate XXXII. figs. 19-24.) 



Description of adult Female. — Total length 2'2 mm. 



Carapace less than one-third of total length, compressed, its depth nearly two-thirds 

 of its length. The dorsal edge is slightly convex, with about six curved teeth, of which 

 one is set on a prominence just behind a shallow depression and in front of tlie hind 

 margin. The ocular lobe is jjrominent on the dorsal surface and is provided with 

 distinct lenses, but without pigment. The pseudorostrum is long, directed obliquely 

 upwards, and acutely pointed; the lateral plates meet in front of the ocular lobe for a 

 distance greater than the diameter of the lobe. The antero-lateral margin is concave 

 and the angle bears an acute tooth. The surface of the carapace and of the rest of the 

 body bears only inconspicuous scattered hairs. 



The abdomen is equal in length to the cephalothoracic region. The last somite is 

 shorter than the preceding, not inflated ; seen from above it increases slightly in width 



