119 



median carinas, the 2nd, 3rd and 4th have one. The carinas of the 1st and 2nd 

 terga end in a short coarse antrorse tooth, the carinas of the 5th are notched in 

 the middle, the carinas of the 6th are retrorsely serrated. The telson ends 

 acutely. The pleura of the first 5 abdominal somites are vertically produced to 

 an acute point. The median spines of the first 5 abdominal sterna decrease in 

 size from before backwards. 



Eyestalks longish ; the eyes, which are small, reach nearly to the end of the 

 basal joint of the antennular peduncle. 



The two terminal joints of the antennular peduncle are very short. The 

 antennular flagella differ greatly in the two sexes : in the female they are cylindric- 

 al, and the inner, though a little longer, is not appreciably slenderer than the 

 outer: in the male the outer flagellum is, in its basal three-fourths, vastly 

 broader than the inner, being almost foliaceous. 



The antennal scale is very broadly foliaceous : its length is not a third that 

 of the carapace, its outer margin ends anteriorly in a spine, its whole inner 

 margin is fringed with very long setas. 



External maxillipeds stout, the whole of the terminal joint and a good part 

 of the penultimate joint also, reach beyond the tip of the antennal scale : their 

 dorsal edge, like that of the 1st pair of thoracic legs behind the hand, is fringed 

 with long setae. 



1st pair of legs very stout, almost the whole hand reaches beyond the 

 antennal scale. 



The 2nd pair of legs differ in the two sexes : in the adult female they are 

 almost as long as the first pair, whereas in the adult male, and in the young, 

 they reach but a very little way beyond the carpal articulation of the hand. 



The 3rd pair surpass the 1st by almost their last two joints. Of the stout 

 4th and 5th pairs, the 5th reach nearly to, and the 4th a dactylus beyond, the 

 ntennal scale. 



In the male the last 3 thoracic sterna are sharply carinated in the middle 

 line : in the female the carination of the antepenultimate sternum is distinct, but 

 that of the last two is obsolescent. 



Length of carapace of egg-laden female 11 millim., that of the largest male 

 9 millim. Abdomen of egg-laden female 25 millim., that of the largest male 20 

 millim. 



23 females, 21 males, and 45 young, were dredged, all in one haul, off 

 Bombay in 56 to 58 fathoms. 



Regd. Nos. 3 -^-° (Types of the species) 



— ^J-J^CO U! UHV V^VIW/ . 1Q 



