26 



region are broad and deep, and the ridge defining the branchial channel is very 

 conspicuous along the whole length of the carapace. The spines of the carapace 

 are well buttressed by sharp ridges. 



All six abdominal terga are carinated, the first 3 broadly and incompletely, 

 the last 3 sharply and completely so that each carina ends in a spine. The 6th 

 abdominal somite is very little longer than the 5th. Telson " trifurcate," a little 

 shorter than the endopodite of the caudal swimmeret. 



Eyes of moderate size, their major diameter not twice that of the eyestalk. 

 Antennular flagella very stoat : in the most perfect specimen, though they are 

 broken, the outer one is longer and the inner one much longer than the entire 

 body. 



The external maxillipeds are a good deal shorter than the 3rd pair of 

 thoracic legs. The 4th and 5th thoracic legs are not flagelliform : the 5th pair, 

 which are considerably longer than the 4th, are as long as the carapace (and 

 rostrum) together with the first two abdominal terga, and are not so very much 

 longer than the 3rd pair. 



The coriaceous tubercles on which the oviducts open are very prominent, 

 and nearly meet in the mid-sternal line. On the coxa? of the 4th pair of legs, in 

 the female, are a pair of even larger lobules, which also nearly meet in the 

 middle line : these together with two rounded tubercles situated, one behind the 

 other, in the middle line of the sternum, form the " thelycum." 



In the largest specimen the carapace and rostrum are 64 millim. long, the 

 extended abdomen 105 millim. long, measured in the middle line. 



Gulf of Manar 531 fathoms : off Cape Comorin between 556 and 595 

 fathoms. 



-r, i at 3805-3806 , m £ ,, . . 1729 3854 



Kegd. JNos. — ~ — (lypes or the species): -jg-: -jr-. 



10. Haliporus villosus, Alcock. 



Haliporus villosus, Alcock and Anderson, Journ. As. Soc. Bengal, Vol. LXIII, pt. 2, 1894, p. 146. 

 Illustrations of the Zoology of the Investigator, Crustacea, Plate XXVI. Fig. 1. 



Submembranous, flaccid, finely and densely hirsute. All the tissues ex- 

 tremely lax, the branchise small and very feathery. 



Rostrum dorsally arched, its tip reaching nearly to the end of the 2nd joint 

 of the antennular peduncle, armed dorsally with 6 to 8 little spines, its gastric 

 carina distinctly continued to near the posterior border of the carapace. Cervical 

 groove well cut, not interrupted by the rostral carina, which it distinctly notches. 

 The sinuous longitudinal ridges that, respectively, define the branchial region 

 and the branchial canal are very well marked, and dorsal to the former are a 

 series of grooves and ridges that mark out several triangular and polygonal 



