444 Annals of the South African Museum. 



Plate XXVIII, fig. 1 c ; tibial projection lower down than in australis 

 and bearing 2 teeth only. 



Pedipalps. Tibia, tarsus and palpal organ as in figs. 1 A and B. 

 Palpal organ longer and more slender than in australis. 



Spinners. Mutilated . 



Measurements. Length of carapace 3'7 mm. ; total length 8'5 mm. 

 Length of 4th leg 12'9 mm., 3rd leg 11 mm., 1st leg 10 mm. 



GEN. ISCHNOTHELE, Auss. 



ISCHNOTHELE CASSETTI, 11. Sp. 



Specimens. One ? (B 4666, Type), Peniba, N. Rhodesia (Fr. 

 Cassett,8/19). 



Colour. Carapace dull brown, lighter laterally and posteriorly ; 

 legs lighter brown than the carapace ; abdomen dull black, dorsal 

 surface with about 4 inconspicuous patches of white hair ; sternum, 

 coxae, etc., medium brown. 



Carapace. As broad as long ; length equal to tibia, metatarsus 

 and ^ tarsus I, and to metatarsus and \ tarsus IV ; fovea slightly 

 procurved at the bottom. 



Eyes. Anterior medians round, a radius apart and more from the 

 laterals ; laterals close to the anterior border of the carapace, long, 

 oval and equal or subequal in area to the medians. Posterior row 

 straight to procurved ; medians small and flat, almost touching the 

 laterals, which are smaller than the anterior laterals. 



Labium. At least twice as broad as long; apex with a very few 

 minute pale denticles. 



Maxillae. With an area of sharp denticles stretching along the 

 anterior portion from the base to f of the length. 



Sternum. As long as broad, and with 3 distinct sigilla on each 

 side. 



Chelicera. Outer margin with 8 teeth and 4 smaller ones basally on 

 the inside of the row of 8 ; also 1 small tooth more towards the centre 

 of the groove; inner row with 6 large teeth. 



Spinners. Equal in length to tibia, metatarsus and f tarsus IV. 



Legs. In order 4, 3, 2, 1 ; clothed with long hairs, bristles, and 

 moderately well spined ; tarsi not scopulate, but bearing bristles and 

 fine spines, which are stouter on the posterior legs. 



Measurements. Length and breadth of carapace 6 mm. ; total 

 length (carapace and abdomen) 15 mm. ; spinners 10 mm. ; legs 18. 

 15-7, 14, 13-3 mm. 



