140 MR. R. I. pococK ON THE SCORPIONS [Mar. 18, 



Rhoptrurus baroni, sp. n. (Plate XIII. fig. 2.) 



Colour fulvous, thickly marbled with black like Isometrvs macu' 

 latus, the black patches taking the form of irregularly shaped, 

 though symmetrically arranged, spots and bands. In the posterior 

 lateral portions of the cephalothorax the fulvous tint predominates ; 

 the central tubercle and region of the lateral eyes are black ; the 

 ante-ocular area of the cephalothorax is black in the middle, lighter 

 at the sides ; a fulvous band runs from the region of the lateral 

 eyes towards, but falls short of, the fulvous portion immediately 

 behind the central tubercle ; an oblique fuscous band runs from the 

 fulvous patch behind the lateral eyes and divides on each of the 

 prominences which defines the hinder third of the median sulcus. 

 Roughly speaking, the tergites are marked on each side by six 

 patches of dark colour, three of these being internal and three 

 external ; the two anterior of the internal patches more or less fused 

 with their fellows of the opposite side, but the posterior of them 

 surrounding a yellow patch is separated from the corresponding 

 patch of the opposite side by a yellow patch which marks the median 

 keel. The posterior sternites variegated with black ; the inferior 

 and lateral portions of the tail variegated with black, the upper 

 surface of the segments adorned with a V-shaped black mark and 

 the vesicle with straight black lines. The external surface of the 

 legs, the brachium and humerus variegated ; the haiid almost wholly 

 fulvous, the fingers darker at the base. 



Cephalothorax somewhat coarsely granular throughout, very 

 widely and lightly emarginate in front, divided throughout by 

 median sulcus ; ocular tubercle deeply cleft and granular. 



Tergites coarsely but somewhat sparsely granular; marked with a 

 low median granular keel ; the seventh furnished on each side with 

 two anteriorly abbreviated denticulated keels. 



Sternites smooth, sparsely hairy, the last only feebly granular but 

 not carinate. 



Tail. The first and second segments marked with ten granular 

 keels, the superior keels coarsely granular, the inferior, especially on 

 the first segment, much more feeble ; the intercarinal spaces also 

 granular ; third segment with inferior keels very weak, the fourth 

 with the superior keel visible and the inferior keels almost or entirely 

 obsolete ; the fifth evenly rounded above and below, without keels ; 

 both these segments feebly granular and sparselj' hairy. Vesicle 

 hairy, not granular, the spine simple ; aculeus long, slender, and but 

 lightly curved. 



Palpi. Upper surface of humerus minutely granular, and bounded 

 in front and behind by a series of coarser tubercles ; the anterior 

 surface beset with finer and coarser tubercles: brachium granular 

 and costate above, armed in front with a few strong sharp teeth : 

 manus rounded and smooth, about as wide as the brachium : dactyli 

 long, slender, in contact throughout, neither lobate nor sinuate in 

 either sex, armed with erect bristles ; of the lateral teeth of the 

 dactyli the internal series is composed of eight larger teeth and ihe 

 external series of nine pairs of teeth. 



