32 Annals of the South African Museum. 



wider than the anterior median eyes. Superior spinners very small, 

 scarcely half the length of the inferior ones. Legs shorter in the ? 

 but longer in the ad. $ ; the first pair in the ad. 3 with the tibia, 

 patella, and femur strongly incrassated, the 3 posterior pairs slender. 

 Chelicerae elongated and the cribellum very small in the ad. $ . 



Allied to Dorceus and Adonea from the N. African deserts. The 

 females and immature males are sedentary and construct curious 

 trap-door nests, but the adult $ runs about in the daytime and 

 mimics an ant in its movements and general appearance while 



running. 



SEOTHYRA SCHBEINERI, n. sp. 

 (PI. I., pp. 5-7.) 



Specimens. 19 $ $ and 20 ? ? from Hanover (types, No. 9955, 

 December) ; also 1 1 and 19 young from Hanover (No. 9568, 

 November), and a few young from Poortjesfontein. The young 

 $ resembles the ? in colour. 



5 5 . Colour (in spirits) of limbs flavous, the distal ends of the 

 pedipalps and first 2 pairs of legs orange or reddish brown ; carapace 

 yellow, the thoracic portion paler, the cephalic portion darker and 

 often more brownish yellow ; chelicerae reddish ; abdomen pale 

 yellowish or quite pallid. 



Whole spider covered (but not densely) with fine black bristles 

 and shorter, more appressed, white hairs, which are scarcely visible 

 in spirits, but become silvery when dried. 



Anterior median eyes about a diameter apart, very close to the 

 posterior median eyes and 1| 2 diameters from the anterior margin 

 of carapace. Vulva with a large, depressed, anterior area lying at 

 the bottom of a cavity with longitudinal oval opening, the depressed 

 area suddenly expanding posteriorly into a large, transversely oval 

 area, the latter not depressed but defined on each side by a curved 

 groove containing a dark spot. Legs IV, I, II, III. All the tarsi and 

 metatarsi (especially the posterior pairs) with short black spines 

 below, metatarsus I also with an internal apical spine ; tibia I with 

 a fringe of long hairs on inner side, II with a couple of spines along 

 under side, III and IV with 1-2 apical spines below. 



$ 3 . Carapace more or less infuscated, with black hairs ; the 

 thoracic portion brownish yellow posteriorly, with white hairs at the 

 lateral margins ; summit of cephalic portion reddish, with white 

 hairs ; chelicerae blackish red or red ; coxa, trochanter, and generally 

 also the base of the femur of first leg reddish yellow or ochraceous, 

 rest of the leg more or less blackened, but the tarsus, metatarsus, 



