Mr. E.. I. Pocock on Neotropical Scorpions. 91 



middle, the grooves behind, in front of and at the sides of the 

 ocular tubercle, rather deep ; the whole of the upper surface 

 studded with rounded tubercles, the median eyes small, tlie 

 distance between them greater than a diameter ; the distance 

 between the two principal lateral eyes about equal to a 

 diameter, a minute third eye situated above and behind the 

 posterior large eye. 



Tergites polished, obsoleteiy granular or tubercular behind, 

 the last more distinctly granular, with two posterior tubercles 

 on each side. 



Sterna entirely smooth, punctured. 



Tail rather robust, narrowed posteriorly, the segments with 

 nearly straight parallel sides, the second a little wider than it 

 is long, the fourth segment nearly flat above, those in front 

 of it shallowly sulcate ; the siiperior and supero-lateral keels 

 strongly developed, granular, with a prominent posterior 

 tooth ; the upper surface of these segments granular at the 

 sides, the first segment also granular in the middle ; the first 

 and second segments neither keeled nor granular below, 

 smooth and punctured, the third also almost entirely smooth 

 below, only very obsoleteiy keeled and lightly rugulose ; the 

 fourth more distinctly keeled and irregularly tubercular, with 

 a distinct inferior lateral keel ; the fifth segment flat and 

 weakly granular above, with squared granular edges, a 

 distinct granular median lateral keel in the anterior half of 

 the segment, the three inferior keels distinct and subdenti- 

 culate, the spaces between them granular, the segment more 

 than twice as long as wide ; the vesicle large, wider than the 

 fifth segment, smooth and mesially grooved above, some- 

 what coarsely punctured below and at the sides, impressed at 

 the base of the vesicle, which is long, nearly straight, and 

 curved in its distal half. 



Palpi robust, thickly and coarsely granular above, with 

 the normal keels developed ; the hrachium without the 

 superior tooth on its anterior surface ; manus robust, carinate 

 above and below, the carinas studded closely with granules, 

 which extend on to the intercarinal spaces ; the upper surface 

 convex, the width of the hand almost equal to the length of 

 the hand-back and rather greater than the height of the hand, 

 the length of the movable digit considerably greater than that 

 of the hand- back. 



Femora of the legs flnely and closely granular, the rest of 

 the segments nearly smooth. 



Pectines furnished with 5—G teeth. 



Measurements in millimetres. — Total length about 54, of 

 carapace 8*5, of tail about 29 ; width of first segment 3"9, of 



