257 



The abdominal terga from the second to the fourth inclusive are transversely 

 channelled, both margins of the channel being raised into microscopically ctenate 

 crests. 



The eyestalks, which are very stout and very short, are not united, are 

 freely movable, and are not prolonged beyond the globular eyes. 



The greatly inflated basal joint of the antennular peduncles has the two 

 external terminal spines very strong and long, projecting far beyond the eyes. 



The antenna! flagellum is not much longer than the chelipeds. 



The external maxillipeds have the inner edge of the ischiopodite evenly 

 toothed throughout and the lower edge of the meropodite furnished with two 

 large unciform spines near the proximal end. 



The thoracic legs, except the ischiopodite of the first pair, are almost devoid 

 of hairs. 



The chelipeds are robust and are not quite symmetrical on both sides, the 

 longer one being about an eye-length shorter than the fully extended body 

 (measured with the rostrum) ; their meropodite and carpopodite have each a 

 terminal ring of four spines, the meropodite also having a series of distant 

 spinelets along the upper margin in continuity with a terminal spine on the 

 upper edge of the ischiopodite, and the last-named joint having also a terminal 

 spine below ; their fingers, which are barely equal in length to the inflated palm, 

 are finely and evenly toothed up to the very tip, are capable of very complete 

 apposition, and when shut form a pronounced spoon. 



The second, third, and fourth thoracic legs are at least two-thirds the length 

 of the chelipeds, and have the meropodite and carpopodite granular (the former 

 joint with a pair of terminal spines above, the latter with a single one), and the 

 curved dactylopodite furnished on its posterior margin with a row of spines 

 hardly smaller than the terminal claw. 



The abdominal legs of the male, excepting the first and second pairs, are 

 quite rudimentary. 



The length of the largest male from the tip of the rostrum to the end of the 

 telson is 44 millim., and of the chelipeds 44 millim. 



Colours in life milky orange, fading to milk-white on the carapace and 

 sternum ; eyes milky yellow. 



Arabian Sea, 738, 824, 836 and 947 fathoms. 



Regd. Nos. ^ (Type of the species) : f : ?S : ^ : . * 3 . 



26. Munidopsis Wardeni, Anderson. 



ilunidopsis Wardeni, Anderson, Jonrn. Asiatic Soc. Bengal, Vol. LXV. pt. 2, 1896, p. 99. 

 ILLUSTRATIONS OF THE ZOOLOGY OF THF, INVESTIGATOR, CRUSTACEA, PLATE LV. FIG. 1. 



This species is very closely related to M. stylirostris, W. M., but differs in 

 33 



