198 Annals of the South African Museum. 



J . Colour of the whole animal very dark blackish-brown, the 

 pectines pale yellowish. 



Cephalothorax as long as the first and second caudal segments- 

 and i of the third, its anterior edge emarginate in the middle. 



Tergites 2-6 smooth in the middle, but finely granular towards the- 

 sides, the median keel smooth in all the segments. 



Sternites all smooth ; the spiracles narrow, with parallel edges. 



Tail. — Upper surface finely and sparsely granular in the anterior, 

 but smooth in the posterior segments, the terminal tooth of the- 

 superior crests enlarged in segments 1-4 ; sides of the tail smooth 

 or with a few fine granules between the keels ; ventral surface of 

 segments 1-2 smooth, polished and minutely punctate, that of seg- 

 ment 3 more uneven, especially laterally, but not granular, that of 

 segment 4 weakly and thickly granular ; the infero-lateral keels- 

 smooth and almost obsolete in segment 1, smooth and very weak in 

 segment 2, weak but granular posteriorly in segment 3, quite distinct 

 and weakly granular in segment 4 ; vesicle smooth on the basal half 

 below. 



Pedipalps. — Upper crest of tibia coarsely granular, the posterior 

 surface less granular than in ^ ; hands less hairy, broad, moderately 

 convex, and thickly covered above with low tubercles, which are 

 more isolated but anastomose somewhat near the inner basal angle; 

 inner edge of hand with blunt granules ; width of hand considerably 

 exceeding length of hand-back ; the granules of the finger-keel par- 

 tially fused in the distal part to a short smooth keel, which does not 

 exceed, however, ^ or i of the whole length. 



Legs. — Terminal tarsal segment of third leg with one, of fourth 

 leg with no external spines below, the outer terminal lobe with four 

 spines in both pairs of legs ; the penultimate tarsal segment of third 

 and fourth legs with an external spine below, proximal to the large 

 intersegmental spur (this being also the case in the $ ). 



Pectines with 11 teeth, the scape free of teeth at the base for |- of 

 its length. 



Measurements. — Total length 80 ; greatest length of cephalothorax 

 11^; width 10^; distance of eyes from anterior median edge 7f : 

 width of hand 8f ; length of hand-back 6|, of movable finger 9i-, of 

 tail 37. 



Opisthophthalmus geanicauda Pure. 



Additional locality. — 1 ad. <? from Klipfontein (near Steinkopf),. 

 Namaq. Div., Cape Colony (Dr. B. H. Hoivard) : Interocular area of 



