Contributions to the Soiith African Arachnid Fauna. 455 



anterior laterals, as in subarmatus, but forming with anterior laterals 

 an area 2-| times as wide as long. 



Abdomen. Genital orifice surmounted by 2 small oval plates fringed 

 over with hairs, and with 2 vertical rows above composed each of 

 3 muscle attachment stigmata. 



Cribellum. As in fig. 5 B. Basal portion in diagram is anterior 

 border in specimen. 



Chelicera. Moderately long, with fairly stiff hairs on anterior 

 border of fang groove, and with a few small blunt denticles on 

 posterior border of groove at base of the inner cheliceral projection. 

 Sternum. Twice as long as wide. 



Labium and coxae of pedipalps with slight lateral depressions 

 across them. 



Legs. Metatarsus I straight, red and spineless ; metatarsus II 

 straight, duller in colour, and with 2-3 spines apically on under 

 surface ; metatarsus III with numerous, and metatarsus IV with 7-8 

 long slender spines apically on under surface. Calamistruni weak. 

 Tarsus IY without spines, but with dense stout black bristles on 

 under surface ; other tarsi also with bristles on under surfaces, but 

 becoming finer and sparser anteriorly. Tarsal claws of 4th leg with 

 a single row of 8-9 teeth ; the distal ones long and stout, the basal 

 ones shorter, finer and closer together. 



PeilipuljHt. As in fig. 5 A; very similar to D. subarmatus 

 (Tullgr.). 



Measurements. Total length ITS mm. ; length of carapace 5'6 mm., 

 width 4'3 mm. 



$ . Colour. Seen in spirits, carapace appears blackish-red, 

 covered with dark hairs ; abdomen infuscated testaceous, and densely 

 covered with dark hairs ; under surface of abdomen slightly lighter ; 

 and as is characteristic of Dresserus, ornamented with numerous 

 muscle attachment stigmata, of which those directly above the vulval 

 plate and those below are arranged in fairly regular lines. Sternum, 

 coxae, etc., dark reddish -brown; legs slightly browner than carapace, 

 and posterior one slightly lighter. When dry, the specimens were 

 seen to be covered with silky olive-black hairs having a pale sheen. 



Carapace. Equal in length to patella, tibia, and metatarsus, and 

 greater than tibia, metatarsus and tarsus of 1st leg ; and equal to 

 patella, tibia and metatarsus of 4th leg. Width equal to tibia, meta- 

 tarsus and ^ tarsus of 1st leg, and stretches from bottom of fovea to 

 anterior border of carapace. Surface faintly reticulate ; highest 

 portion just behind posterior lateral eyes, i. e. cephalic portion is 

 slightly arched. 



34 



