24 A. Alcock — Garcinological Fauna of India. [No. 1, 



Antennal flagella more than half as long as the carapace, 



Chelipeds rather more than 2| times the length of the carapace in 

 the male, and having the same form and proportions as those of 

 Neptunus {Lupocycloporus) whitei, the arm being much stouter than the 

 hand and the surface of most of the segments being granular with a 

 squamiform sculpture : 5 spines on the anterior border of the arm and 

 2 in the distal third of the posterior border : hand and wrist slender, 

 costate — the costae granular : a spine at the inner and the outer angles 

 of the wrist : hand with 3 spines, one being in front of the apex of the 

 wrist-joint, the other two being side by side some little distance behind 

 the finger-joint. The fingers are stoutish, as long as the hand, and 

 are gently incurved, but have the extreme tips sometimes slightly bent 

 outwards: their opposed edges have jagged teeth like those* of any 

 Neptunus, 



The first three pair of legs are slender. The fourth pair have all 

 their joints broadened as in any Neptunus, though the merus and 

 carpus are not quite so broad, relatively, as in that genus ; there is a 

 spine near the far end of the posterior border of the merus of this pair. 



The 2nd and 3rd abdominal terga are sharply and decidedly cari- 

 nate. 



In the Indian Museum are 14 specimens representing both sexes 

 and several ages, from the Andaman Sea up to 55 fms. and from off 

 Ceylon 26J-32 and 34 fms. The largest male has the carapace 15 millim. 

 long and 19 millim. broad, but there are two egg-ladea females only 

 about half this size. 



The four smallest specimens are identical with White's figure of 

 Lupocyclus rotundatus, the two largest specimens agree with Walker's 

 description and figure of Goniosoma insequale, the six middle-sized 

 specimens cannot be decisively separated from either : I therefore think 

 that all belong to one species. 



8. Lupocyclus strigostis, n. sp. 



(an Lupocyclus philippinensis, Semper, Nauck ?) 



Except in the form of the chelipeds (which are even slenderer than 

 those of Lupa forceps) and last pair of legs, this species is very much 

 like L. rotundatus, from which it differs in the following characters : — 



( 1) the carapace is perhaps a little more nearly circular, and is 

 distinctly more convex : 



(2) the front is more prominent, is practically confluent with the 

 inner supra-orbital angles, and is cut into four sha^-p teeth, of which 

 the middle two are much smaller than the others : 



