470 Annals of the South African Museum. 



1-2 spines on the anterior edge of the upper surface and with 2 on 

 the posterior surface. Femora II, III and IV each with 2 fine 

 spines dorsally. Tarsus III armed with coarse bristles on the under 

 surface ; metatarsus about 1^ times as long as the tarsus, with fewer 

 bristles, but with some scattered fine spines on the under surface, 

 which are more numerous distally ; patella with 4-5 spinules on the 

 anterior edge of the upper surface. Tarsus IV slender, with sparse 

 coarse bristles and numerous short fine spines on the under surface ; 

 metatarsus just over twice the length of the tarsus; patella IV with 

 5 spinules on the anterior surface. 



Claws long and slender ; slightly curved and dentate. 



Abdomen. Conspicuous ventral tracheal slit anterior to the spinners 

 and separated from them by an infuscated band continuous with the 

 dark dorsal surface ; also a longitudinal chitiuous mark on each side 

 of the abdomen, slightly distant from the lung opercula ; these may 

 also be connected with a tracheal system. 



Vulva. As in fig. 16. 



Spinners. Inferior spinners moderately stout, sub-conical, and with 

 a short apical joint ; placed anteriorly to and separate from a group 

 of 2 small median and 2 small superior spinners. 



Measurements. Carapace, $ 2 mm., $ 2 mm. long ; total length 

 <$ o - 5 mm., $ 4'6 mm. 1 $ (B 3664) from Mochudi, Bechuanaland 

 Protectorate (R. W. Tucker, 21/2/18), agrees with ? species of 

 Salisbury ensis. 



DIORES SETOSTJS, n. sp. (Plate XXIX, fig. 17). 



Specimens. ? (No. B 2823, Type), G-t. Winterhoek Mts., 4000- 

 4800 ft. (E. W. Tucker, November, 1917). 



Colour. Cephalothorax golden-brown, cephalic portion darker than 

 thoracic; abdomen purple-black, grained with lighter flecks, and with 

 four pale central marks posteriorly ; ventral surface pale, but with the 

 dorsal infuscations extending around the spinners ; sternum and coxae 

 pale testaceous ; legs golden-brown, tarsi darkening distally ; labium 

 and coxae of peclipalps darker brown, the latter having whitish tips. 



Cephalothorax. Surface smooth and bearing sparse short, scattered 

 hairs ; median stria very short, radial infuscations faint. Cephalic 

 portion raised and well defined ; clypeus not infuscated, but bearing 

 one or two hairs below the ocular tubercle. 



Abdomen. Upper and under surfaces sparsely clothed with short 

 stiff dark hairs. Under surface has only faint traces of tracheal 

 markings (see D. bifurcata and D. salisburyensis). 



