44 A. Alcock — Carcinological Fauna of India. [No. 1, 



(3) there are no spines on the hand. [But there are speciraens of 

 N. tuherculosus in which the spines of the hand are blunt and incon- 

 spicuous]. 



In the Indian Museum are two males from the Andamans. After 

 comparing these with 43 specimens, of both sexes and all sizes, of 

 N. tuherculosus I think they should be kept distinct. 



24. Neptunus {Lupocycloporus) Whitei. 



Achelous Whitei, A. Milne Edwards, Archiv. u Mus. X. 1861, pp. 343, 347, pi 

 xxxi. fig. 6 : A. O. Walker, Journ. Linn. Soc, Zool., XX. 1886-90, p. 110 : J. R. 

 Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 371. 



Neptunus Whitei, Miers, Challenger Brachyura, p. 171. 



Carapace fairly convex, its length about f its breadth without the 

 spines, its surface finely pilose, but not sufl&ciently so to conceal a 

 characteristic series of transverse finely-beaded ridges, of which there 

 are 3 on the gastric, 3 on either branchial region, and one on the 

 cardiac. 



The front, which is prominent beyond the bluntly dentiform 

 inner supra-orbital angles and beyond the epistome, is cut into four 

 very definite teeth of nearly equal size, of which the middle two are 

 slightly the more prominent. Supra-orbital border cut by two fissures. 



Antero-lateral borders moderately oblique, cut into nine regular 

 teeth (including the outer orbital angle) of which the last is barely 

 twice the length of the others in the adult, though in the young it is 

 a good deal longer. Posterior border finely beaded, and forming a 

 common curve with the postero-lateral borders. 



Orbits large, almost entirely dorsal in position, not concealing the 

 large reniform eyes, from dorsal view. 



Chelipeds nearly 3 times the length of the carapace in the adult 

 male, more or less covered with squamiform granules, the wrist and 

 hand much slenderer than the arm. 4 to 6 spines on the anterior border 

 of the arm ; 2 on the posterior border, one being terminal the other sub- 

 median. Hand and upper surface of wrist costate, the costae granular : 

 both inner and outer angle of wrist spiniform : at least 3 spines on the 

 hand, one being in front of the apex of the wrist-joint and two side by 

 side some distance behind the finger-joint. Fingers slender, compressed, 

 ending in long needle-like points, the tips being slightly but very 

 characteristically bent outwards; otherwise the dactylus is nearly 

 straight and the immobile finger gently upcurved. 



Legs, like the chelipeds, more or less pubescent : there is a spine 

 near the far end of the posterior border of the merus of the last pair. 



Abdomen of male pointed : in both sexes the 2nd and 3rd abdomi- 

 nal terga are transversely, but not very strongly, carinate. 



