Contributions to the South African Arachnid Fauna 485 



B. trinotatus taken at the same time and locality strongly resemble the 

 genus X<'ro;>li,'iix V-.\\\\. Drassidae in their appearance and move- 

 ments when alive ; also they were taken from the same habitat as 

 specimens of Xerophaeiix, from which, at the time, they were 

 indistinguishable. 



RHAEBOCTESIS EXILIS, n. sp. (Plate XXVIII, fig. 9). 



Specimens.} (B 4476, Type), Messina, N. Transvaal (R. W. 

 Tucker, 12/18). 



Colour. Carapace medium brown with fairly strong infuscated 

 mottling, especially laterally ; legs lighter in colour, strongly infus- 

 cated proximally, and becoming slightly redder distally. Abdomen 

 greyish-black on the dorsal surface; ventral surface pale with bright 

 brown epiginal plate. 



Carapace, eyes, etc., as in R. secundus ; eyes differ slightly in that 

 anterior row is somewhat procurved, and median ocular area is 

 noticeably longer than wide. 



Mcr.rillae. Strongly resembling those of Drtixsidde ; oblique impres- 

 sion, however, does not reach to the outer border. 



La/*. Tarsus I lightly scopulate ; metatarsus I with scopular hairs 

 anteriorly, and with 1-2 median and 2 basal spines ; 2nd leg similar, 

 with 0-2 median and 2 basal spines. Tarsus III bearing bristles on 

 the under surface ; no median white band present. Fourth legs missing. 



I'n/i/Hi/ps. Tibuil spine short, stout, and curved upwards and 

 inwards. Palpal organ as in fig. !>. 



. Carapace 2 - 8 mm. in length ; total length 5'5 mm. 



RHAEBOCTESIS MATROOSBERGENSIS, n. sp. (Plate XXVIII, fig. 8). 



Sperliin-iix.l ? (B 34-56, Type), Matroosberg Mts., C.P., 5000- 

 6000 ft (R. W. Tucker, 11/17). 



Colour. Carapace light brown, darker anteriorly ; chelicera reddish - 

 In-own ; legs light brown. Abdomen dull grey dorsally and ventrally 

 sternum light brown, dark edged. 



Hi/rs. Front row straight to recurved ; medians about a diameter 

 apart, but less so from the larger laterals. Posterior row very slightly 

 recurved, medians angular and subequal to the laterals ; laterals sub- 

 ei|ual to the anterior laterals. Clypeus not exceeding the diameter of 

 a,n anterior median eye. 



CkeJicera. As in K. trinotatus. 



Leys. Metatarsus I scopulate laterally almost to the base, and with 

 2 median and 2 basal spines on the under surface; tibia with IK. 



