CH.ERILUS. 



59 



hand, both of which are thus much longer than carapace ; hand 

 (fig. 17, C) long and narrow, the width considerably less than hall 

 the length of the underhand, its inner edge straight and parallel 

 with the outer edge ; movable finger a little longer than the 

 carapace. Pectinal teeth (>. 



Measurements in mm. — Total length 64, carapace 0, tail 39, 

 brachium 10*5, underhand 1 1, movable finger 9-5, width of hand 4-">. 



fjoc. Ladakh. 



40. Chaerilus tricostatus. Pocock, Join-. Bo 

 1899. 



/n. 



X. H. Soc. xii, p. 266 



Colour (dry specimen) a tolerably uniform reddish brown, with 

 blacker markings. Carapace granular at the sides, mostly smooth 

 above except for the auteocular triangle, which is granular at 



A. 



C. 



Fig. 17. 



-A. TTand of Charilus tricostatus J . B. Hand of C. / 

 C. Hand of C. insignis J. 



least in front; longer than 1st and 2nd caudal segments, about 

 equal to 3rd and 4th and a little longer than 5th. Sterna as in 

 the other species, but the last furnished with four short crests, 

 each consisting of a few large granules. Terga finely granular, 

 with a few larger pearl-like granules scattered here and there, and 

 a series of them along the posterior border ; with distinct lateral 

 crests, those on tin; 3rd consisting of a single large pearl-like 

 granule, those on the -1th, 5th, and 6th of three similar granules. 

 Tail rather le-s than three times the length of the carapace, width 

 of 1st segment about equal to length of 4th; 2nd about as wide 

 as long; dorsal surface very sparsely granular, lateral and inferior 

 surfaces weakly but not so sparsely granular as the upper surface; 

 all the keels normal and denticulated ; the inferior median keels of 

 the 1st segmenl distinct and consisting of coarse granules like those 

 on the 2nd and on the last abdominal sternum ; i/< stele finely granular 

 belowand laterally, of much the same form as in ( '. margaritatus and 

 C. insignis. Chela long; humerus as long as carapace and a liit !i 



