70 
Annals of the Transvaal Museum 
of the carapace to the centre of the fovea : frontal eyes about one-quarter of 
a diameter apart ; posterior laterals nearer to the posterior medians than are the 
latter to each other : posterior margins of posterior row in a slightly procurved 
line. 
Legs. Tibia I subequal to metatarsus I in length, and only slightly in- 
crassated: distal tubercle bearing a short pointed process. Metatarsus I is 
slightly bowed when seen from the side : there is no marked bend or incrassation 
in its course, although there is faint indication of a bend near the base on the 
inner side but no spine in that neighbourhood : on the inner surface there is a 
number of stout bristles or spiniform setae which are only absent near the base 
of the segment, and distally there is usually a spine in addition to the one on 
the apical edge. Tarsus I strongly scopulate, with one or two spines on each 
side or such spines may be absent. Patella III with about 11-18 short spines 
on the anterior side, including those at the distal edge, but without any 
distinct spines dorsally though several stiff bristles occur there : IV with short 
spines over about one-half of the length of the segment and an odd one or two 
may also occur in the distal half of the segment. Coxa III with stifhsh setae 
on its post- ventral border, the setae being sparsely scattered in the distal half 
and more densely aggregated proximal! y. 
Pedipalp. Tibia about twice as long as deep, the excavation margined by 
a more or less continuous band of spines. Tarsus with one or several weak 
spines at the apex superiorly. 
Colour. Carapace and legs pale yellowish brown, abdomen somewhat 
infuscated superiorly. 
Measurements. Total length 9-8, length of carapace 4-4, breadth of carapace 
3*5, length of tibia I 3-25, of first leg 18, of second leg 16, of third leg 13*8, of 
fourth leg 19. 
Female. 
The principal characters of the female are as follows: coxa III with a 
dense broad tuft of stiff setae on its post- ventral border, the setae being fairly 
closely disposed even in the distal half of the segment : ocular area hardly two- 
fifths as long as the distance from the anterior margin of the carapace to the 
centre of the fovea, and the pair of long setae behind the ocular area is situated 
nearer to the anterior margin of the anteromedian eyes than to the centre of 
the fovea: frontal eyes about ^ of a diameter apart, situated on a low 
tubercle which is grooved above, the frontal quadrangle broader in front: 
posterior medians nearer to the laterals than to each other : posterior margins 
of posterior row of eyes approximately in a straight line : anteriorly, patella IV 
is spined over f-f of its length: anterior margin of carapace well marked off 
from lateral margin : two pairs of sternal sigilla, the anterior pair submarginal. 
Total length 20, length of carapace 6-7, breadth of carapace 5-25. 
Acanthodon nigropilosus sp. nov. (text fig. 3 a and b) 
Types. An adult male and female from Arnhemburg, Carolina, collected 
by Mr A. Roberts (19. ix. 1915). The specific name has reference to the strong 
development of blackish hairs on the appendages and sternum of the female. 
The characters of the adult male are as follows: 
Colour. Carapace and appendages for the most part pale yellowish brown : 
abdomen purplish above: the membrane adjoining the margins of the carapace 
is also strongly tinted with purple. 
Pedipalp. The tibia is about twice as long as deep, its excavation being 
