South African Arachnida. 201 



proximal to the large intersegmental spur. This spine was absent 

 from all our specimens of the typical form and of variety (5. 2- 

 lamelliform hairs are always present on the inner surface of the 

 basal segment of the chelicerge. This variety is represented by the 

 following specimens : — 



(d) 9 ad. 2 , 2 ad. <? , and 22 juv. from Van Wyks Vlei (D. G. 

 Alston) : Length of cephalothorax in largest ? 16-|- mm., in ^ 

 14-15^ mm. ; tarsus of fourth leg normally with three but not in- 

 frequently four spines on the outer terminal lobe ; abdominal 

 sternites in ? much more strongly granular than in the types, all 

 the segments (rarely segment 1 quite smooth) granular in the middle 

 and, in the posterior segments, also laterally (except on the lung- 

 books), the mesial granules of the posterior segments coarse and 

 ■strongly transverse,''' especially in segment 5 ; untoothed basal 

 portion of the scape of the pectines shorter than in the types or 

 variety /3, forming only f of the whole length in the ? ; anterior 

 fork on cephalothorax generally quite absent or indistinct, sometimes 

 quite distinct. 



Opisthophthalmus nitidiceps Poc. 



The Museum contains the following specimens : — 



(a) 1 juv. from Port Elizabeth (/. L. Drege). 



(b) 21 2 (11 ad.) and 12 juv. ^ from Dunbrody on the Sundays 

 River, Uitenhage Div. (Bev. J. A. O'Neil) : Number of pectinal 

 teeth in 5 12-16, in ^ 13-20 ; length of cephalothorax in ad. ? 

 11-|— 13 mm. 



The ? of nitidiceps closely resembles that of crassimcuius in having 

 the hands very convex above and very broad (their breadth almost 

 •equalling the length of the cephalothorax), the vesicle granular 

 anteriorly below for a considerable extent, the scape of the pectines 

 free of teeth at the base for some distance (^- of its length) and the 

 cephalothorax very smooth, being finely granular only at the sides. 

 It differs principally in having the infero-median keels of first and 

 second caudal segments distinct, weakly crenular, replaced by low 

 granules only in the anterior part of segment 1, which is weakly 

 granular bslow, the last abdominal sternite mostly weakly granular, 

 the finger-keel of pedipalps smooth or nearly so for a more or less 

 -considerable portion of its length (but generally more or less granular, 

 or at least crenular, proximally), and the terminal tarsus of the third 



* Similar graaules oftsii 03cuu in the ? of variety i5 from Great Ba^limxnlaud, 

 ■■e.g., in soma of ths spssim^ns from HDamD^d. 



17 



