186 A. Alcock — Carcinological Fauna of India. [No. 2, 



the rest of the antennal peduncle, and the flagellum, completely exposed 

 from above. 



Epistome broad. External maxillipeds with the merus as broad as 

 the ischium, completely closing the mouth. 



Chelipeds in the male rather longer tban any of the other legs, 

 and with a long somewhat inflated palm. Ambulatory legs of moderate 

 length, slender, and ending in a styliform dactylus which in some cases 

 is spinulate along the posterior border. 



Abdomen of the male composed of seven distinct segments, that of 

 the female of five. 



Inachoides dolichorhynchus, Alcock & Anderson. Plate IV. figs. 1, la. 



Inachoides dolichorhynchus, Alcock and Anderson: Journ. As. Soc, Bengal, 

 Pt. ii. 1S94, p. 206. 



Carapace elongate-triangular. Rostrum as long as the carapace, 

 simple, spiny, acute. The regions of the carapace are well defined, and 

 are distantly spiny, the following spines being the most conspicuous : — 

 (1) on each side a supra-ocular, a post-ocular (hepatic), and four bran- 

 chial ; (2) in the middle line, a gastric, a cardiac, and an intestinal. 



The eyes, though to a certain extent retractile towards the sides of 

 the carapace, are in all positions completely exposed. 



The anteunas, which are exposed from the end of the basal joint, 

 are long — more than three-fourths the length of the carapace : their 

 basal joint is long, slender, flattened and fused with the neighbouiing 

 parts, and has its antero-external angle produced into an acute spine : 

 the second and third joints are knobbed distally. 



The chelipeds are long — one-fourth longer than the carapace and 

 rostrum combined: their palm, which forms about two-fifths of their 

 total extent and is nearly three times the length of the fingers, is broad- 

 ened and moderately inflated. The 2nd pair of trunk-legs ai'e about 

 equal in length to the chelipeds, but the 4th and 5th pairs are not much 

 more than half that length. 



Length of carapace and rostrum 17"5 millim. ; greatest breadth 8 

 millim. ; greatest span 54 millim. 



Off Madras Coast. 



Encephaloides, Wood-Mason. 



Nearly related to Inachoides. 



Carapace, owing to the remarkable inflation of the branchial regions, 

 heart-shaped and posteriorly as broad as long (rostrum included) : the 

 branchial regions meeting across the carapace in the middle line. Ros- 



