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subabyssal, but several are truly abyssal : so e. g. Halip. androgyniis captured at a depth of 

 2000 fathoms and Halip. ctirvirostris observed in water of 2375 — 2385 fathoms. 



Six or, when Halip. laevis., known from the Philippines, is included, 7 species appear 

 to be inhabitants of the East Indian Archipelago. 



f 8. Haliporus aequalis Sp. Bate. 



C. Spence Bate, Report Challenger Macrura, 1888, p. 285, PI. XLI, Fig. i. 

 J. Wood-Mason, Ann. Mag. Nat. Hist., Ser. 6, Vol. VIII, Oct. 1891, p. 277. 

 A. Alcock, Catal. Indian Deep-Sea Crustacea, Calcutta, 1901, p. 23. 



Stat. 262. December 18. 5°53'.8S., 132^48'. 8 E. Near Kei Islands. 560 m. Solid bluish grey 

 mud, upper layer more liquid and brown mud. 2 females. 



Stat. 316. February 19. 7° 19^4 S., ii6°49'.5E. Bah Sea. 538 m. Fine, dark brown sandy 

 mud. 2 females. 



The specimens are nearly of the same size, not yet full-grown. The larger female from 

 Stat. 262 is 78 mm. long. In this female, like in the three others, the rostrum is obliquely 

 directed upward, not horizontal as should be the case in the female according to the author 

 of the Report on the Challenger Macrura; this oblique direction was already observed by 

 WoOD-M.\sON. In the female, long ■j'i mm., the rostrum reaches to the far end of 2"'' anten- 

 nular article, it is a little shorter than half the length of the rest of the carapace measured 

 near the dorsal median line, it is very slightly convex above, straight below and armed with 

 7 teeth in addition to the two epigastric teeth. In the other, somewhat younger female from 

 the same Station, the rostrum, that reaches to the middle of the terminal joint of the anten- 

 nular peduncle, appears just half as long as the rest of the carapace, it is straight above, 

 but very slightly curved below; the toothing is 6 + 2, the foremost 7"^ tooth being- rudimentary. 

 In the females from Stat. 316 the toothing is also 7 + 2. The post-rostral ridge is quite 

 inconspicuous behind the gastric region in all the specimens. 



The 4"^ — 6'*^ abdominal terga are sharply carinated. In the two females from Stat. 262 

 the telson is much shorter than the inner caudal swimmeret, but in a female, long about 

 70 mm., from Stat. 316 the endopod hardly extends beyond the tip of the telson. The 

 distance between the tip of the antennular peduncle and that of the antennal scale is, in the 

 female long 78 mm., one and a half as long as the 3"^ joint of the peduncle; the lower 

 (inner) antennular flagellum, measuring 26,5 mm., is a little more than twice as long as the 

 length of the peduncle i.e. the distance (11 mm.) between its extremity and the frontal margin 

 of the carapace; the upper (outer) flagellum, unfortunately not complete, seems to be almost 

 3-times as long as the other and nearly as long as the body. 



The flagella of the lower antennae are, in the female long 78 mm., 310 mm. long, 

 4-times as long as the whole body. 



The e.xternal maxillipeds measure one-third the length of the body. There is a spine 

 at the distal end of the ischium of the i^' pair of legs. 



In the female, long 78 mm., the legs of the 4"^ pair measure two-thirds the length 

 of the body, in another, long 68 mm., little more than half its length. In this female, 



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