South African Arachnida. 205 



the second. Segment 1 depressed, wider than high, highest and 

 widest near hind end, becoming narrower and considerably lower 

 towards the front ; the sides straight throughout the greater part of 

 the segment but not parallel, diverging gradually from the anterior 

 end backwards as far as the widest part near hind end, behind 

 which the sides converge again for a very short distance ; length of 

 the segment 3^ times the width and nearly 3| times the height behind ; 

 the superior keels far apart, forming a pair of low, broad, rounded, 

 finely granular ridges but without any seriate granulation, and ending 

 behind in a pair of low convexities ; the upper surface broadly 

 grooved medially throughout the whole length and finely granular. 

 Surface of tail, especially on the sides, very finely granular, more 

 coarsely so in the fifth segment. Superior keels sharply denticulate 

 in segments 2-5, the denticles very small in the anterior part of 

 segments 2-3, and strongest in the posterior segments, the terminal 

 tooth slightly enlarged in segments 3-4 but not spiniform. Lateral 

 keels strong in segment 1, nearly smooth, or weakly granular in 

 places, abbreviated at posterior and anterior end, the sides of 

 segments 2-5 raised convexly along the middle longitudinally but 

 scarcely carinate. Inferior lateral and medial keels almost smooth 

 in segment 1, very finely (but not serially) granular and irregularly 

 roughened with pits in segments 2-3, coarsely denticulate in 

 segment 5 (with about 12-15 large teeth in each keel). 



Vesicle somewhat compressed, broader than the hind end of 

 segment 5, the surface, especially below, very irregular, densely and 

 rather coarsely granular (like the sides of fifth segment) ; upper side 

 almost straight, being only very slightly convex in the middle, but 

 slightly concave posteriorly before the base of aculeus. 



Pectincs with 22-23 teeth, the scape angular at the base behind. 



Peclipalps with the fingers lobed at base ; the hand slightly convex 

 along the middle above, with the upper surface more or less reticu- 

 larly granular, the granulation coarse towards the sides. 



Locality. — An old specimen labelled " Eustenburg District, Trans- 

 vaal" (reg. no. 420, T. Ayrcs). 



Measurements.^—TotsA length 191 (abdomen stretched, natural 

 length probably about 185) ; length of cephalothorax 18f , width 19^- ; 

 length of last abdominal tergite 12|, width 13 ; length of tail 113 ; 

 length of first segment 14, greatest width (behind) 4^, height behind 

 4 ; length of second segment 21, of third segment 21-|-, of fourth 

 segment 24, of fifth segment 22, of sixth segment llf ; width behind 

 of fifth segment 3 ; width of vesicle 3-}, height 4|- ; length of femur 

 of pedipalp 18, width of upper surface (including bordering granules) 



