00 CH.EHIL1U.E. 



more than twice as long as wide, weakly granular above and in front 

 except for coarse granules along the keels, posterior surface 

 smooth, inferior surface very weakly granular ; brachium a little 

 longer than carapace, the normal keels marked by a single series of 

 low shining granules, the anterior surface furnished with a few large 

 granules on its upper and lower prominences, for the rest the seg- 

 ment is almost entirely smooth ; hand (tig. 17, A) finely and closely 

 granular above aud externally, more finely granular internally and 

 smooth on the underhand, furnished with only five keels, three 

 above and two bordering the underhand, the keels defined by a 

 single row of shining granules which are much larger than the 

 granules covering the rest of the upper surface ; underhand a 

 little longer than brachium and than movable finger ; hand parallel- 

 sided, its width a little more than half the length of the under- 

 hand ; movable finger slightly longer than carapace, furnished 

 with 4 rows of teeth. Pectinal teeth 5-6. 



Measurements in mm. Total length 50, carapace 7'5, tail 30, 

 brachium 8, underhand 8*5, movable finger 7*8, width of hand 5. 



Loc. Sadiya, Assam. 



Female unknown. 



40. Chaerilus gemmifer, Pocock, A. M. N. H. (6) xiii, p. 81, 1894 ; 

 Kraep. Tien:, Scorp. etc. p. Io9, 1899. 



Colour nearly black, varied with yellow ; terga with median and 

 lateral marginal yellow spot and yellow > < -shaped mark ; tail 

 and chelae deep reddish brown with black keels ; fingers black. 

 Carapace with coarse shining 

 granules on the sides, anteocular 

 area weakly and sparsely granular 

 throughout, the area behind the 

 tubercle serially granular; relative 

 length of carapace and caudal seg- 

 ments approximately as in C. marga- 

 ritatus. Terga covered with coarse 

 pearl-like granules, much larger and 

 farther apart than in C. margaritatus ; 

 lateral crests represented by one or 

 two still larger granules. Sterna 

 as in C. margaritatus. Tail approxi- 

 mately as in that species, but 

 smoother below, the four inferior 

 keels of the 1st segment smooth, and 

 the inferior medians of the 2nd at 

 most very weakly granular ; vesicle 

 (fig. 18, B) not so globular,much less 

 convex below, height less than that 

 of 5th segment, granular above as 

 well as at the sides and below ; from 

 the lateral aspect passing without constriction into the base of the 



Fig. 18. A. Vesicle of CheerUus 

 margaritatus B. Vesi- 

 cle of C. gemmifer . C. 

 Vesicle of C. pictus c? , side 

 view. D. Do., upper view 

 of extremity. 



