igiQ-] J. R. Henderson : New Scorpions from S. India. 381 



hand with the outer portion of its upper surface vertical and crest- 

 ed, the upper crest or finger-keel forming the outer border of the 

 hand as seen from above and stopping opposite the articulation of 

 the mobile finger ; hand covered above with large smooth tubercles 

 of varying size and shape, which are specially aggregated to form 

 three well-defined hand ridges in addition to the finger-keel, viz. 

 an inner and an outer ridge continued on to the immobile finger 

 where the tubercles disappear, and a third intermediate shorter 

 ridge which stops short of the immobile finger ; the three ridges 

 all commence at the posterior margin of the hand ; in addition to 

 the keel of the underhand, which is smooth, there are three slight- 

 ly tuberculate ridges on the undersurface of the hand, and this 

 surface is rather coarsely tuberculate towards the inner margin ; 

 the fingers are faintly granular particularly below. 



Legs practically smooth. 



Pectinal teeth 17-18. 



Measurements. — cf Total length 116 mm., carapace 19 mm., 

 tail 60 mm., humerus 21 mm., brachium 2i'5 mm., underhand 

 i8*5 mm., movable finger 21 mm., width of hand 13 mm. 



Type-specimen : No. ^|^ in the collection of the Zoological 

 Survey of India, 



The above description is taken from an adult male. In 

 the female the hand is much broader, more finely granulated, and 

 the three ridges on the upper surface of the hand are much fainter. 

 The length of the tail as compared with that of the carapace is 

 practically the same in both sexes. 



This species resembles P. gravimanns, Pocock, in the presence 

 of longitudinal ridges or crests on the upper surface of the hand, 

 but in other respects is very different. It appears to be most 

 nearly related to P. fulvipes, Koch, and P. wroughtoni, Pocock, which 

 both have the outer portion of the upper surface of the hand 

 defined above by a distinct ridge. I had the opportunity^ some 

 years ago of comparing specimens of the species just described 

 with the types of P. wroughtoni from Belgaum, Bombay Presidenc}", 

 preserved in the British Museum. This last species, which is of 

 smaller size, has a much wider hand and the crest on the outer 

 border of this joint is not so well-defined. The part external to 

 this crest is flatter and more vertical in the new species, which is also 

 characterised by the well-marked longitudinal ridges on the upper 

 surface of its hand ; the underhand is granular in the new species, 

 while it is smooth in P.. wroughtoni. 



