Indian Deep-sea Dredging. 211 



longation of the anterior end of the inflated outer wall of the 

 efferent branchial channel, or — what conies to the same thing 

 — of the branchiostegal crest, which is not continued to the 

 anterior margin of the carapace. 



Tiie eyes are hirge and reniform. 



A single female from Station IIG, 405 fathoms. 



Colour in life red. 



Length, from apex of rostrum to apex of tclson Q>Q millim. ; 

 of abdomen 40 millim. ; of carapace, from supra-orbital to 

 posterior margin, 16 millim.; of rostrum, from same point, 8 

 millim. J of outer antennularj flagellum 19 millim., of inner 

 21 millim. 



HYMENOPENJi:us, S. I. Smith. 



10. Ilymenojyenceus microjySj S. I. Smith. 



IIymenopen(Pus microps, S. I. Smith, Ann. Rep. Comm, Fish. 1884, 

 p. 413 (G9), pi. X. fig. 1 ; Wood-Mason, Ann. & Mag. Nat. Hist. (6) 

 vii. p. 188. 



A female from Station 112, 561 fathoms. 



Haliporus, Sp. Bate. 



This genus is probably identical with Hymenopenceus, 

 Smith. 



11. Haliporus cequah's, Sp. Bate. 



Halipoi-us (squalts, Sp. Bate, ' Challenger ' INIacriira, 1888, p. 285, pi. xli. 

 fig. 1. 



Wc do not verify the sexual difference between the male 

 and female in the direction of the rostrum, which is armed 

 with from seven to nine teeth, of which those on the gastric 

 region are constantly two. 



The propodite of the last pair of legs in the male at all 

 events is more than four times the length of the dactylo- 

 podite, while in the penultimate pair it is only twice as long. 

 The almost level crest of the last abdominal somite ends in a 

 small spine. The trifurcate telson is much shorter than the 

 swimmerets. 



The outer flagellum of the antennules is at least three 

 times as long as the inner, which are equal in length to the 

 carapace measured from the tip of the rostrum to the middle 

 of the hinder margin. 



Four males and a female from Station 115, 188 to 220 



