Carcinological Fauna of India. 157 
Carapace elongate-subquadrilateral,. its greatest breadth is across 
the middle of the gastric region, behind which point its sides are quite 
straight and vertical: it is well calcified, and, like all other parts except 
the antennary flagella, is covered with short soft but stiff hairs that are 
not thick set enough to form a coat of concealment. 
Rostrum a depressed grooved tooth, bifid at tip. Four spines on 
the anterior border of the carapace, namely, one on either side of the 
rostrum, one at either supra-orbital angle. 
Lateral borders of dorsum of carapace straight, very slightly con- 
vergent, spinate; the first spine, which stands alone on the hepatic 
region, is of pre-eminent size, the second though much smaller than the 
first is much larger than any of the others. 
Gastric region very well demarcated, armed with nine large spines 
—three in a triangle on either median area, one on either lateral area, 
and one on the hinder part of the central area. 
Some spines on the subocular, subhepatic, and pterygostomian 
regions—largest on the subocular region, where they are definitely 
arranged in two crescentic rows. ‘I'wo spines, one beside the other, on 
the carapace outside the antenna-peduncle, in addition to the spinuliform 
suborbital angle. 
Eyes somewhat reniform. 
Chelipeds slender, but distinctly stouter than the legs, more hairy 
than the carapace, especially, along the edges.of the joints. Upper and 
lower borders of arm spiny; wrist with rows of spines on the outer 
surface and a spine or two at the innerangle; lower border of hand 
spiny, upper border of hand denticulate, cutting edges of fingers sharp, 
entire, 
Legs compressed, their edges plumed. with short bristles, with long 
bristles interspersed, The second and third pair, which are a. dactyl- 
length longer than the first, are not quite 23 times the length of the 
carapace: in all three pairs both edges of the merus are armed with 
stout spines—at least in the distal half, and the posterior border of the 
propus and dactylus with compressed articulated spines which are 
distant and acicular on the propus but stout very regular and close-set 
on the dactylus. 
The subcheliform fourth pair of legs reach very slightly beyond 
the end of the carpus of the preceding pair: the merus has 3 or 4 spines 
on the lower border and a terminal spine on the upper border, the claw- 
like dactylus closes against a bunch of spines on the near end of the 
propus. 
In the Indian Museum area male and female from the Andaman 
Sea, 79-90 fathoms; the carapace of the female is about 27 millim. 
long, and about 21 millim. wide. 
607 
