BUTHEOLUS. 



29 



D. 



Fig. 10. Butheolus melanurus 



A. Carapace from above, 

 pace from the side 



eye smooth ; a single median crest on terga ; last tergum strongly 

 keeled, nearly smooth between the keels. Tail very thick, 

 posteriorly incrassate, the 4th segment about as wide as long, 

 3rd wider than long, 1st segment with 10 granular keels, 2nd and 

 3rd with the superior and 4 in- 

 ferior keels distinct and granular, 

 the median lateral and superior 

 lateral obsolete ; 3rd segment 

 partially pitted ; 4th much more 

 distinctly pitted than the 3rd, but 

 less granular and almost keelless, 

 the median lateral keels being 

 complete only in front, the supe- 

 rior keel also traceable ; 5th 

 segment with inferior lateral keel 

 complete, but weak in front, the 

 rest of the segment deeply and 

 closely pitted, but scarcely gran- 

 ular; dorsal surface of all the seg- 

 ments weakly granular, of the 

 posterior segments pitted ; lateral 

 surface of the 1st, 2nd, and 3rd 

 segments, and in a lesser degree 

 of the 4th granular ; inferior sur- 

 face sparsely granular in the inter- 

 carinal spaces ; vesicle small, piri- 

 form, pitted. Sterna finely granular, smooth, and polished in the 

 middle of the posterior half, move coarsely granular at the sides ; 

 the last with four closely granular crests, the first punctured and 

 bristly in the middle. Chelce : humerus with granular crests ; 

 brachium with smooth crests ; hand smooth, punctured, narrow, 

 narrower than brachium, underhand about half the length of the 

 movable digit, excelling width of hand ; movable finger as long 

 as carapace, furnished with 8-9 rows of teeth, the basal row long ; 

 the large teeth arranged in pairs, the inner of each pair being 

 distinctly in front of the outer, which is merely the enlarged 

 posterior tooth of one of the median series. Legs with granularly 

 crested coxae and femora. Pectinal teeth about 20. 



Distribution. Eastern Mediterranean Eegion ; Punjab. 

 Two subspecies of this Scorpion are represented in the fauna 

 of British India : 



1. B. melanurus typicus ; characterized by having the legs and 

 chelae uniformly clear yellow. 



Loc. Punjab (according to Kraepelin) ; also occurring in 

 the Transcaspian area and Northern Afghanistan. 



2. B. melanurus, subspecies fuscipes, nov. ; characterized by 

 having the humerus and the femora black, and the brachium 

 and patellae infuscate. 



Loc. Northern Baluchistan (Maynard fy MacMdhon). 



B. Cara- 

 C. Lower 



side of tail. D. Sternum and 

 genital operculum. 



