88 



than halfway along the antennal scale, its " stylocerite " ends very sharply. 

 The antennal scale is about two-thirds the length of the carapace proper and 

 hardly reaches beyond the rostrum : there is a small tooth behind the base of 

 its outer border, on the 2nd joint of the peduncle. 



The external maxillipeds reach about three-fourths of the way along 

 the antennal scale : their 2nd joint (basis-ischium-merus) is broad at base and 

 gradually diminishes anteriorly, the outer edge of its ventral surface having a 

 series of small deciduous spines : their terminal joint is narrowly spoon-shaped. 



The 1st pair of legs have smooth joints, and reach beyond the antennal 

 scale by their chelae and tip of carpus only. 



The 2nd pair have a spine on the posterior border of the ischium and about 

 5 spines along the same border of the merus : they reach beyond the antennal 

 scale by their chela? and the whole of their elongate carpus, and their total 

 length is equal to the distance between the tip of the rostrum and the posterior 

 border of the 3rd abdominal tergum. 



The 3rd, 4th and 5th pair have some small and distant spines along the 

 posterior border of the merus : they reach beyond the antennal scale by the 

 tip of the merus the very elongate carpus and the two short terminal joints, 

 and their total individual length is not quite twice that of the carapace and 

 rostrum combined, and is less, by more than the length of the rostrum, than the 

 total length of the body. 



Colour hi life, bright orange. 



In an egg-laden female the length of the rostrum is 17 millim., of the 

 carapace measured in the middle line 24"5 millim., of the abdomen 68 millim., 

 of the longest leg 80 millim. 



Arabian Sea in 824, 836, 937, 1000 and 1200 fathoms : Bay of Bengal in 

 1310 fathoms. 



6093-6098 8667-8669 9291-9300 2420 2424 3438 



Begd. Nos. 



9 - 9 * 10 * 10 - 10 



47. Nematocavcimis temiivostris, Spence Bate. 



Nematocarcinus tenuirostris, Spence Bate, Challenger Crust. Hacrura, p. 817, pi. cxxxii. fig. 10: Alcock, Ann. 

 Mag. Nat. Hist., Maroh 1894, p. 226. 



Except that the legs are very much longer, this species closely resembles 

 X. tenuipes, from which, so far as can be judged by imperfect specimens, it 

 differs only in the following characters : — 



The rostrum, which is of the same shape and length (about =rds the length 

 of the rest of the carapace) and has a similar ventral spine placed not far from 

 the tip, is armed dorsally with only from 7 to 9 teeth, of which the posterior 3 

 or 4 are close together and the others are separated from one another by 

 intervals of increasing width : its gastric carina is sharp and distinct. 



