Annals of the Transvaal Museum. 
■?5 
on the tibia, and about a dozen on the metatarsus, which also has about 
three or four bristly hairs on either side of the ventral surface, and there 
are a pair of such bristles at the distal end of the tibia ventrally. 
On the fourth leg the spines are rather fewer and weaker : many 
short ones on the upper anterior surface of patella, a row of about a dozen 
on the upper anterior surface of the tibia, and a few scattered stiff hairs 
below. About a dozen spines on the lower portion of the anterior surface 
of the metatarsus ; on the posterior surface of this leg spines are wanting.. 
Pedipalp. — Tibia and tarsus fringed on the anterior and posterior 
sides of their ventral surface with numerous strong spines. 
Measurements (in millimetres). — Total length, 31 -5 ; length of 
carapace, 10 -5 ; of palp, 24 ; of first leg, 26 -5 ; of second leg, 23 ; of 
third leg, 22 -5 ; of fourth leg, 32 -5 ; of metatarsus of first leg, 3*8; of 
metatarsus of fourth leg, 5 *75. 
The following description relates to a single male specimen of a trap- 
door spider, taken in the neighbourhood of Pretoria at Mountain View 
bridge, on the 11th June, 1910, by the Rev. Noel Roberts, who kindly 
presented the specimen to the Museum. It is probably a Stasimopus, 
allied to S. nigellus Poc, described from Vredefort Road, O.R.C. (A.M.N.H. 
7.10.319), but the description of this latter species is rather meagre. The 
specimen cannot be matched in the Museum collection, and the female 
is quite unknown. 
STASIMOPUS ROBERTSI, N. Sp. 
Male. 
Colour. — Carapace and chelicerae black, the abdomen fuscous, except- 
ing ventrally on the genital segment and lung opercula, where it is yellow ; 
sternum brown, darker anteriorly and at the sides ; pedipalps and legs 
black, excepting the tarsi and the greater portion of the length of the 
metatarsi (tibia in pedipalp), which are reddish ; also the ventral surfaces 
of the coxae, especially the posterior ones, are brown. 
Carapace. — Reticulately rugose in its posterior half, the raised cephalic 
portion with three ridges, of which the median one is short and weak, but 
the two outer ones are much stronger and have a shallow, almost S-shaped 
curve, posteriorly nearly reaching the outer limits of the fovea ; this raised 
portion is reticulately wrinkled on its lateral surfaces. 
Carapace longer than any of the metatarsi, equal to the tarsus and 
metatarsus of the second leg. 
Sternum. — Apparently without sigilla and labium without spines or 
teeth. 
Eyes. — Anterior row slightly procurved, posterior row recurved, wider 
than the anterior row ; lateral eyes of anterior row transverse, of posterior 
row facing obliquely backwards ; the median eyes of posterior row about 
the same distance apart as (or very slightly less distant than) the lateral 
eyes of anterior row ; distance between anterior and posterior lateral eyes 
appreciably exceeding the long diameter of the latter. 
Posterior median eye distant from posterior lateral eye a trifle less 
than its own diameter, about its own diameter from the antero-median 
eye, and more than its own diameter from the antero-lateral eye. 
