Mr. E,. I. Pocock on Neotropical Scorpions. 99 



female, and its upper surface is marked bj an oval depressed 

 yellow spot. The lower surface of the last abdominal sternite 

 and of the first and second segments of the tail is not keeled. 

 In the palpi the humerus is more granular, the manus is 

 much wider, its width as compared with the brachium being 

 as 1^ is to '6^', and there is a strong spicular tooth on the 

 inner side of it at the base of the movable diirit. 



Pectines much larger, furnished with 1^5-16 very long- 

 teeth. 



Log. Theresopolis (Brazil). Several specimens of both 

 sexes. 



PnONiOCERCUS, gen. nov. 

 (PI. YI.A. figs. 13, 13 a.) 



Allied to Cercoplionius. 



The anterior border of the carapace conspicuously emar- 

 ginate in the median line ; the tubercle in front of the middle 

 of the carapace and sulcate. 



The median teeth on the digits of the clielEe arranged in a 

 single series and of tolerably large size. 



The lower surface of the feet not furnished with a median 

 series of whitish hairs, as in Cercoplionius and Uroplwnius^ 

 but naked along the middle line, and armed on each side of it 

 with a few long setiform spines. 



Plioniocercus pictus^ sp. n. 



Colour ferruginous, much variegated with black. 



Carap)ace mostly blackish, variegated behind and at the 

 sides ; tergites with a lateral flavous patch, a > -shaped 

 flavous mark on each side, and three flavous spots in the 

 middle ; sterna flavous, irregularly clouded with black ; tail^ 

 including the vesicle, variegated above and below ; chelicerce 

 black apically ; pa/^^i blackish, hands reddish, variegated with 

 black lines ; legs deeply variegated with black. 



The carapace nearly smooth, extremely closely and finely 

 granular in the depression below the median eyes ; the longi- 

 tudinal sulcus which traverses the carapace and crosses the 

 tubercle finely granular and distinctly transversely striate ; 

 the anterior border of the carapace somewhat deeply emar- 

 ginate in the middle ; the ocular tubercle in advance of the 

 middle. 



The tergites almost entirely smooth and polished, the sixth 

 finely granular mesially and posteriorly, the seventh very 

 finely granular throughout, with two nearly obsolete more 

 coarsely granular crests. 



