36 EEV. T. E. E. STEBBING AND ME. D. EOBEETSON ON 



three, or four teeth near the apex ; the cleft spines three in number ; the joints of the 

 inner ramus nine, of the outer ten. 



Uropods. In the first pair the peduncle is scarcely so long as the longer ramus, which 

 is straight, almost smooth, except for the group of spines on the truncate apex; the 

 smaller ramus is similar to the larger, but not quite half as long ; in the second pair 

 the peduncle is longer than the short ramus, and a little more than half the length of 

 the longer one, which is acutely lanceolate, carrying six spinules on one border and 

 three on the other ; the smaller ramus is less than half as long or as broad as its 

 companion, but a little longer than the similar ramus of the iirst pair ; in the third 

 pair the peduncle is shorter than the rami, more than twice as long as broad, the rami 

 acute, the inner rather the longer, with six or seven plumose setae on the inner margin, 

 the outer ramus having five spines and one plumose seta on the inner margin, nearly a 

 third of the length of the ramus forming a second joint. 



Telson elongate, cleft for more than half its length, reaching considerably beyond the 

 peduncles of the third urojjods, the acute apices having each a setule in a notch on the 

 inner side; there are also three or four setules arranged near each lateral margin. 



Length. This small and delicate species was dissected before the measurement of the 

 body had been taken. 



Locality. Clyde. 



Remarks. The specific name alludes to the distinguishing fringe of spinules upon 

 the sixth segment of the pleon. 



3. PODOCEROPSIS PALMATUS, n. sp. (Plate VI. A.) 



Lateral angles of the head rather acutely produced between the upper and lower 

 antennae. 



Eyes nearly round, situated on the lateral lobes of the head, in the preserved 

 specimen showing a light rim round a black centre. 



Zfpper antennce. The first joint twice as long as broad, channelled ; second joint once 

 and a half as long as the first, much narrower, slightly curved, with setae at four points 

 of the lower margin ; third joint a little longer than the first, with setae at three points ; 

 flagellum of five or more rather elongate joints carrying filaments; the secondary 

 flagellum very slender, two-jointed, shorter than the first joint of the principal flagellum, 

 the second joint minute, tipped with setules. 



Lower antennas. The third joint as long as the first and second united, distally a 

 little widened. The remainder of the antennae missins. 



Mandibles. Cutting-edge divided into five unequal teeth ; the secondary plate on the 

 left mandible has four teeth, that on the right about six denticles ; the spine-row on 

 the left consists of five spines, denticulate between the widest part and the apex ; on the 

 right mandible there are only four spines ; the molar tubercle has an almost circular 

 denticulate crown with a seta at the hind corner ; the palp is much longer than the 



