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



and the Orissa coast, as well as one of the "Challenger'" duplicates 

 from Japan. 



In the Japanese specimen there is a small dark spot near the 

 middle of either epibranchial region. 



Though the sculpture of the carapace and the dorsal inclination of 

 the orbits do certainly give this species a considerable resemblance to 

 C. variegata, and though the hands strongly resemble those of G. 

 callianassa (which has been confused with G. variegata) , this species 

 is absolutely different from those, and is very nearly allied to G. 

 triincata. 



44. Charyhdis (Oonioneptunus) invest igatoris, n. sp. 



The lobule of the basal antenna-joint does not touch the front, so 

 that the flagellum stands in the upper part of the orbital hiatus. 



Length of carapace nearly five-sixths the breadth. 



Carapace little transverse, little convex, the regions indistinct, and 

 the transverse markings extremely indistinct. 



Front cut into eight teeth (including the inner orbital angles) of 

 which (1) the middle two are rounded, rather narrow, and distinctly 

 the most prominent (2) the submedian are broad and slant outwards, 

 and (3) the oufcei-most pair on either side are narrow and subacute, and 

 form a sort of reduplicated supra-orbital angle. The extent of the fronto- 

 orbital border is almost equal to the greatest breadth of the carapace. 



Antero-lateral borders little oblique, cut into six acute teeth with 

 sharp entire edges, of which the first 3 are much larger than the next 2, 

 while the last is a spine only slightly more prominent than the tooth in 

 front of it. 



The posterior border of the dorsum of the carapace, though nearly 

 straight forms a curve with the postero- lateral borders. 



The eyes and orbits are large — the major diameter of the orbit 

 being at least half the width of the inter-orbital space — but have no 

 particular dorsal inclination : the inner angle of the lower border of the 

 orbit is not dentiform. 



Chelipeds slender, about twice the length of the carapace. Four 

 acute spines, three of which are enlarged, on the anterior border, and 

 none on the posterior border. Wrist with 3 spinules on the outer angle 

 and a very long and acute spine at the inner angle. Hand slender with 

 indistinct costse on the outer surface, with a ridge along the middle of 

 the inner surface, and with four spines on the upper surface — the two 

 on the inner edge of the upper surface being singularly large and acute. 

 Fingers acute, markedly longer than the hand (palm). 



Legs long and slender. The merus of the last pair is more than 



