254 



THETIS SCIENTIFIC RESULTS. 



the superior distally extremity, and the smaller one arises from 

 the end of the lower border. The third joint of all the legs is 



angulated about the middle of the 

 upper border, and the angle is 

 ornamented with several long 

 setae. The superior distal margins 

 of the two following joints are 

 also furnished with tufts of long 

 hairs. The inner ramus of the 

 first pair of pleopods is narrowly 

 triangular, the outer ramus is 

 oblong-ovate ; rami of second pair 

 broader than those of the first. 

 The stylet in the male is rather 

 broad in its basal fourth, from 

 thence it tapers gradually to the 

 very slender apical portion. 

 Outer rami of the uropods linear 

 about six times as long as broad ; 

 when folded they extend beyond 

 the processes of the first joints, 

 and they arise from about the 

 middle of their supporting joint. 



Total length of body ... 10 mm. 

 Breadth ... ... 6 mm. 



Three specimens obtained ofi" 

 Newcastle Bisht, 



Second Pleopod. 

 Fig. 25b. 



SPH^ROMA PLUMOSA, sp. nov. 



(Figs. 26a-b-c.) 

 Stations 44, 48. 



Body depressed, gradually increasing in height to the penultimate 

 segment of the pleon ; fromt he later point it decreases rapidly 

 to its termination. The whole of the surface and the margins of 

 the body are closely covered with plumose hairs. Cephalon 

 small, much narrower and a little shorter than the first peraeon 

 segment. Frontalmargin subtruncate, with a small median lobe; 

 sides slightly excavated, each with a pair of denticles, one at the 

 anterior external angle and the other immediately in front of the 

 eye. First segment of the peraeon nearly equal in length to 

 the two following; second to fourth subequal, each being about 

 one-third longer than any of the three succeeding segments, 

 which are also of about equal length. Pleon nearly equal to 

 the peraeon ; the penultimate segment is convex, with the sutural 



