254 



Memoirs of the Indian Museum. 



[Voi,. V, 



two- thirds the length of the dactylus. The upper margin of the palm, in its basal 

 two-thirds only, bears a sharp ridge that is obscurely notched. The outer surface of 

 the palm is evenly convex and the whole of its middle part is covered with gra- 

 nules which increase in size distally. Close to the gape of the fingers there is a clus- 

 ter of large spinules and at the proximal end of a smooth blunt ridge that extends 

 the entire length of the fixed finger there is a short row of rounded tubercles. On 

 the inferior edge of the palm there is a series of close-set spinules. The inner face 

 of the palm is covered with granules larger than those on the external surface and 

 there are a few tubercles near the gape of the fingers. The inner edge of the fixed 

 finger is without teeth and is feebly crenulate at the proximal end. In the gape at 

 the base of the dactylar articulation is a blunt lobe serrated at the distal end. When 

 the claw is closed the fingers meet only at the tip. The dactylus is curved and 

 pointed at the apex and bears a few coarse and rather obscure tubercles on its upper 

 margin near the base. On the inner edge there is a large bluntly trilobed tooth at 

 the proximal end, a single large blunt tooth in the middle of the margin and a 

 series of seven smaller teeth, also blunt, behind the tip. On both upper and lower 

 margins of the palm and on the fingers are numerous tufts of coarse yellowish 

 setae. 



The smaller left leg of the first pair (text-fig. 21/) is totally different in form and 

 bears no spinules or tubercles. The merus is about twice as long as broad and is 

 longer than the ischium; the outer surface shows traces of a ridge. The carpus is 

 about two and a half times as long as wide ; the upper and lower margins are sharply 

 crested and, throughout the greater part of their length, are strictly parallel. The 

 chela is a little shorter than the carpus and about one and a half times the length of 

 the merus. The fingers are about as long as the palm ; they are obscurely serrate 

 internally and bear tufts of coarse setae. 



The form of the remaining pairs of legs is illustrated in text-figs. 21a- d. The 

 propodus in the third pair bears a conspicuous lobe on its inferior margin; the fifth 

 pair is perfectly chelate. 



The second abdominal segment rs the longest, equal to the fourth and fifth 

 combined and a little longer than the sixth. There is a patch of soft hairs on the 

 postero-lateral angles of the third and fourth and a similar patch in the middle of 

 the fifth. The sixth somite is subcircular, narrower than the fifth; it is excavate on 

 either side in the posterior third and in the middle of the distal margin there is a short 

 longitudinal furrow (pi. xiii, fig. 5). The first two abdominal appendages are slen- 

 der ; the remaining three are broadly foliaceous. 



The telson (pi. xiii, fig. 5) is subquadrilateral, little more than half the width of 

 the sixth somite and one quarter broader than long. The lateral margins are gently 

 rounded and the posterior margin slightly convex with a tuft of long setae on either 

 side. In the middle of the upper surface there is a smooth hemispherical swelling, 

 bearing tufts of setae, and behind this swelling are three conspicuous dimples, the 

 middle one larger than the two lateral. 



The uropods are much longer than the telson. The inner is triangular in shape, 



