72 



The last pair of legs are between 4^ and 5 times the total length of the 

 carapace and reach almost to — in the female even beyond — the end of the carpus 

 of the last pair but one : the merus is rather sparsely spinate, chiefly on the 

 posterior border, and the propodite is plumed on both sides so as to exactly 

 resemble the vane of a feather : the dactylus is extremely short. 



In both sexes the last abdominal segment is shaped like a spearhead : in 

 the female the 2nd and 3rd abdominal terga have a median spine and the 4th 

 has a spine at the proximal end of either lateral border. 



Colours in spirit yellow. In life the carapace is reddish with longitudinal 

 stripes of dark red, the eyestalks chelipeds and legs are closely cross-banded 

 with red, and the eyes are purplish black. 



The carapace of an adult female, with eggs, is 11 millim. long. 



i-ip . Bay of Bengal, S° 51' 30" N., 81° 11' 52" E. 28 fathoms. " Investigator." 



1713-1718 



lo 



3538 ,_, , 67 fathoms. 



(Type of the species). I 



1 



G. of Martaban, 14' 26' N., 96" 23' E. I ^ . 



f- ' Investigator. 



JO ^ L J 



OQQf 



' ' ■■ Ofi Torres Is., Mergui Archipelago. 40 fathoms. " Investigator.' 



Latreilloims, Henderson. 



Latreillopsis, Henderson, Challenger Anomura, p. 21 ; Ortmann in Bronu's Thier Reich, Malacostraoa, p. 1156 : 

 Aloook, J. A. S. B., LXVIIl., pt. 2, 1899, p. 165. 



Carapace subquadrilateral, deepish, with vertical side-walls, not entirely 

 concealing the basal joints of the legs : the regions fairly well indicated. Front 

 of moderate width, ending in a spiniform rostrum on either side of which is a 

 long slender divergent supraocular spine. Linea anomurica present, most dis- 

 tinct posteriorly. 



Eyes as in Latreillla, large and borne free at the end of slender eyestalks of 

 remarkable length. Antennaa long, the peduncle slender and cylindrical. 



Epistome well demarcated from the palate. Buccal cavern much broader in 

 front than behind, the efferent Ijranchial channels very well defined. Though 

 the external maxillipeds do not quite meet across the buccal cavern they are dis- 

 tinctly operculiform, owing to the expansion of their merus. 



Chelipeds long and slender but much shorter than the first 3 pairs of ambu- 

 latory legs : their joints, like those of the legs, are cylindrical, and the palm in 

 the male is enlarged and club-shaped. 



Ambulatory legs slender, the first 3 pairs very long ; the fourth pair reduced 

 in length, and subchelate. 



