155 



somewhat compressed, though trigonal, and its 3 edges are serrated up to a 

 strong terminal tooth or lobe : the carpus is granular in places, the granules 

 being dentiform ;m<l having a linear tendency; distally the angles of the carpus 

 are produced to spines, and there is also a large spine at the near end of the 

 outer border : in the male nearly half, and in the female a little more than half, 

 of the hand is funned by the fingers, which are slender and hooked at tip : the 

 palm, though prismatic, is compressed and is fluted, with serrated ridges: the 

 fingers are finely toothed, the teeth though of several sizes having an uniform 

 appearance and being a good deal embedded in fur ; one tooth near the basal end 

 of the fixed finger is conspicuously prominent. 



The other legs are smooth and slender ; the 5th pair are the shortest, and 

 the 4th pair which are as long as the carapace and rostrum and first two 

 abdominal somites combined are the longest. 



The dimensions of the largest male and largest egg-laden female in the 

 collection are as follows : 



Length of rostrum. Length of carapace. Length of abdomen. 

 Male. 28 millim. 54 millim. 92 millim. 



Female. 24 49 79 



The colours in life were : dorsum yellowish pink ; venter pink in the female, 

 white in the male : chelipeds banded pink and yellow in the female, pink and 

 white in the male. Eggs dark blue. 



Andaman Sea, 185, 188-220, 265, 271 and 405 fathoms. 

 The embryo, extracted from the egg, has a globular cephalothorax and a 

 long segmented abdomen ending in a great fan. All the appendages are present 

 including those of the abdomen, which have the same form as those of the 

 adult : the caudal swimmerets are covered by the great terminal fan . 



T, j AT 8557 3112 6852-6860 1386-1388 2176 



Regd. Nos. :_:__:___:_. 



PHOBEBUS, A. Milne Edwards. 



Phobtnu, A. Milne Edwards, Ann. Sci. Nat., Zoo!., (6) XI. 1881, Art. 4, p. 1 : Spenre Bate, Challenger Cram. 

 Mcmra, p. 170. 



Rostrum of good length, broad and depresssd at base, armed with teeth. 

 Carapace (without rostrum) more than half the length of the abdomen, the 

 cervical groove conspicuous. Telson subquadrate but somewhat elongate, as 

 long as the caudal swimmerets, the exopodite of which is transversely fissured. 



Eyes obsolescent, without pigment and not differentiated from the eye- 

 stalks which are placed close together beneath the base of the rostrum. The 3rd 

 joint of the antennular peduncle is as long as or longer than the 2nd : the 

 antennular flagella, of which the outer is the shorter, are not as long as the 

 carapace proper. 



