66 



border of the carapace : from the post-orbital spinule a ridge runs obliquely 

 backwards to join the post-antennal ridge. 



Traces of carination occur on the first two abdominal terga, the 3rd tergum 

 is carinated in the greater part of its extent, the 4th is carinated throughout and 

 the carina is produced posteriorly to a spine of some size, and the 5th and 6th 

 are longitudinally wrinkled dorsally. The telson is shorter than the endopodite 

 and much shorter than the exopodite of the caudal fan. 



Eyes brown, as wide as their stalks. The antennular scale, which is foliace- 

 ous with a sharp tip, is as long as the basal joint of the antennular peduncle. 

 The antennal scale is not quite half the length of the carapace proper : it is 

 acutely elongate-oval, and in addition to a stout midrib, has its outer border 

 thickened up to a strong terminal spine. 



The external maxillipeds, which are stouter than any of the last three pairs 

 of legs, reach almost to the tip of the antennal scale : all their joints are setose, 

 the 2nd (basis-ischium-merus) being a good deal broadened in its distal half. 



The first two pairs of legs are similar in form, the 2nd pair, which are the 

 longer, being half the length of the body including the rostrum and tail-fan. In 

 the 1st pair the posterior border of the merus and palm are serrated, the distal 

 angles of the wrist — especially the posterior one — are produced, the fingers are 

 nearly as long as the palm, and the hand is more than a third the total length. 

 In the 2nd pair the posterior border of the basis, ischium, merus and palm is 

 serrated, the distal end of the posterior border of the wrist is very strongly 

 produced, the fingers are nearly as long as the palm, and the hand is more than 

 two-fifths the total length. 



The filiform 3rd pair are about as long as the carapace and rostrum. The 

 4th and 5th pair have the terminal joint truncate at tip and setose : the 5th pair, 

 which are the longer, are not half the length of the carapace. 



In an egg-laden female the length of the rostrum and carapace is 54 millim. 

 (the rostrum contributing about 7'5 millim.) and that of the abdomen is 82 

 millim. 



Colour in life deep lurid red. 



From the Laccadive Sea, 595-556, 696, and 740 fathoms. 



Regd. Nos. -y- (Type of the species): -^- : — . 



33. Pai*apasiphcea Gilesli, Wood-Mason. 



Parapasiphsen Gilesii, Wood-Mason, Ann. Mag. Nat. Hist., Feb. 1893, p. 166. 

 Illustrations of the Zoology of the Investigator, Crustacea, Pljte III. Fig. 8. 



Differs from P. latirostris in the following characters : — 



The vermiculate wrinklings of the carapace are finer and less distinct. 



