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 than 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. 1894, 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 antennae, 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 neighbouring 
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 are 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- 
