19 Araneae. 221 
the hairs pallid to olive-black ; chelicera blackish-red, clothed with dark hairs and with some white ones at 
the base; abdomen pale-yellow, contrasting strongly with the dark cephalothorax and clothed with whitish 
hairs intermixed with a smaller number of black ones. 
Cephalothorax shorter than the tibia, metatarsus and tarsus of first leg (by nearly half the tarsus). 
Cephalic portion densely punctate, very high and broad, resembling that of the ? of B. namaquensis n. sp. 
in shape, when viewed from the side or from in front, but when vievved from above it appears not parallel- 
sided but somewhat narrowed towards the front, the widest portion being some little distance behind the 
region of the posterior lateral eyes ; width at broadest part exceeding that of the thoracic region and equal 
to the length of the patella, tibia and 7s of the metatarsus and to the tibia and 7 /s of the metatarsus of first 
leg, and exceeding the distance from the bottom of the fovea to the anterior surface of the ocular tubercle 
(by about 3 / i of the length of the tubercle). 
Ocular tubercle strongly produced in the middle in the form of a cone; the posterior median 
eyes at the base of the tubercle on each side large, about iy 8 of a diameter apart and nearly 3 diameters 
from the anterior lateral eyes ; the anterior median eyes with their centres just above the level of the lower 
edges of the posterior medians, situated below the cone, from the apex of which a blunt ridge or keel runs 
vertically downwards to between the two anterior eyes ; anterior lateral eyes each placed on the outer under 
side of a prominent tubercle, the apex of which forms a short pointed cone projecting beyond the upper 
part of the eye. 
Legs with the metatarsi of the two anterior pairs lightly curved. 
Pedipalps with the tibia simple, transverse, much shorter than the patella, these two Segments 
together shorter than the femur or tarsus, the latter broadly ovate, shortly and rather suddenly attenuated 
at apex, shorter than the femur. Palpal organ large, sublenticular in shape, bearing on its lower surface 
anteriorly a pallid oval capsule, to the mesial end of which is attached a large stout lunate blade as long 
as the palpal organ, while from the lateral end of the capsule the very long Stylus arises and curving 
circularly nearly l 3 / i times round the rim of the palpal organ ends in a very fine point near the anterior 
end of the lunate blade (PI. XI, Fig. 8). 
Total length (including chelicera) 9 mm ; length of cephalothorax (including ocular tubercle) 4V4 mm ; 
width of cephalic region in widest part 3% mm, of thoracic region across the fovea 3 mm ; distance from 
centre of fovea to apex of ocular tubercle 3 2 /ö mm. 
Genus Eresus Walck. 
1. Ei'esus namaquensis n. sp. 
PI. XI, Fig. 9. 
Specimens. a) 5 ??, 12 juv. ?? and I juv. <3 from Steinkopf, Little Namaqualand. Adults in July 
and August 1904. 
?$. Colour of cephalothorax and legs blackish-red to nearly black, the posterior legs and the 
underside of the anterior legs paler, the hairs blackish-olivaceous; abdomen sooty-black, with dark hair- 
covering, numerously speckled with small groups of white hairs, much as in E. fumosus C. K., the dorsal 
Stigmata also ringed with white hairs. 
Cephalothorax shorter than the tibia, metatarsus and tarsus of first leg by V 3 — 76 of the tarsus 1 ), 
its surface granulär but without spinules on the sides of the head; cephalic portion strongly depressed and 
1) In a sixth female from Steinkopf the cephalothorax is slightly longer than these 3 Segments in one leg and considerably 
longer in the other leg, but probably the legs of the first pair in this case are abnormal. 
3* 
2ö* 
