o76 "ENDEAVOUR" SCIENTIFIC RESULTS. 



a little shorter than the inner branch of the uropods. On 

 either side of its acute tip there is a much longer, 

 movable, subterminal spine, and in juxtaposition to each 

 of these another small external spinule, the most pos- 

 terior of a series of six paired spines on the dorsum 

 of the telson. 



The male is of slighter build and comparatively 

 smaller in size than the female. Otherwise, they are 

 very much alike. The posterior median spines on the 

 fourth and fifth abdominal somites seem to be compara- 

 tively longer than in the females; and between the fourth 

 pair of legs there is a pair of plates, similar to, though 

 smaller than, those between the bases of the third pair. 

 These plates have no counterpart in the female. 



The first pair of pleopods in the male differs from the 

 corresponding more foliaceous appendages of the female. 

 The outer branch in the male, though soft and flexible, 

 is quite styliform ; the inner branch is a flattened, slightly 

 double curved, remotely "S"-shaped plate, medially more 

 or less thickened, and terminating distally in a soft, 

 blunt, flat-margined, recurved tip. Where the flattened 

 inner margin of the "blade" of the inner branch of 

 the pleopod would join the corresponding flattened 

 margin of the tip, there is a small notch subtended proxi- 

 mally by a small tooth or tubercle. 



Measurements. The carapace of the female holotype 

 is 27-5 mm. long, the rostrum 38-5 mm., the abdomen and 

 telson 84 mm., and the telsou alone 22 mm. The spine 

 of the antennal scale on the right side is 19-5 mm., and on 

 the left 21 mm. long; the anterior border of the blade 

 in either case is but slightly in advance of the tip of the 

 spine. The antennal peduncle, measured from the 

 anterior border of the carapace in line with the branchio- 

 stegal spine, is 13 mm. long. The third maxillipeds are 

 about 30 mm. long and reach by 5 mm. of the length of 

 their terminal joint beyond the antenna] peduncle. The 

 first legs are between 35 and 36 mm. in length (the right 

 palm 6-25 mm., fingers 8 mm., carpus 4 mm.), and exceed 

 the third maxillipeds by two-thirds the length of the 

 fingers. The right second leg is 55-5 mm. in length (palm 

 11-5 mm., fingers 9 mm., carpus G mm.), and it exceeds 

 the corresponding third maxilliped by the length of the 

 hand, and the blade of the antennal scale by the length 

 of the fingers and the distal 3 mm. of the palm together. 



