204 
Annals of the Transvaal Museum. 
about J of the length of the dorsal surface. Basal patch of spinules on 
metatarsus IT above only a trifle longer than that at the apex of the tibia. 
Inner surface of tibia II with 7-9 spines. Anterior surface of metatarsus III 
with a band of about 34 spines. Patella III with about 9-12 short spines, 
on its anterior surface : at the distal end above there are a few rather 
weak spines and some spiniform setae. Metatarsus III without an apical 
tuft of spines below. Inferoposterior apical tuft on metatarsus IV composed 
of 4-6 spiniform setae arranged in a transverse row. 
Colour. — Carapace and appendages castaneous. Upper surface of 
abdomen rather strongly infuscated. 
Measurements . — Total length 33 mm., length of carapace 13 -3, breadth 
of carapace 12, length of metatarsus of first leg 4 -9. 
This species is closely related to S. dreyeri mihi, from Kroonstad 
(Records Albany Museum, III, p. 86). It differs therefrom chiefly in 
the ocular characters, the eyes of dreyeri being longer and more closely 
approximated than in the species now described. The difference between 
these two forms is therefore much the same as that between S. schdnlandi y 
Poc., and S. astutus , Poc. 
Stasimopus robertsi, mihi. (PI. XXVII, figs. 3 and 4.) 
Female examples of this species have been taken from the following 
localities in the Pretoria District by Messrs. G. van Dam and A. Roberts 
Wonderboom Poort, Mayville, Pretoria North, Witfontein (near Pretoria 
North), Skinner’s Court, Bon Accord Siding, Lyttelton Junction, Brooklyn, 
Hatfield, Garstfontein, between Villieria and Derdepoort, Roodeplaat, 
and Zeekoegat (near Roodeplaat). 
The female of this species has not been fully described, but the more 
important characters, taken from specimens collected at Rosslyn (G. van 
Dam), are mentioned in my key to the genus (Records Albany Museum,. 
Ill, p. 79). The length of the strip of spinules on the upper surface of 
the palpal tarsus now proves to be somewhat variable, and may occasionally 
be about as short as in the closely related species, S. coronatus,. mihi, from 
Kroonstad (Records Albany Museum, III, p. 87) : this latter species may 
therefore eventually be found to merge into robertsi, but the two forms 
seem separable through the spinulation at the apex of the palpal tibia, 
where the adults of robertsi have only an odd 1 or 2 spinules, whereas a 
group of spinules occurs in coronatus. The number of spines on the anterior 
surface of tibia I is a variable character : in one adult specimen there are 
19. The species S. dubius (Records Albany Museum, II, p. 410), described 
by me from a single female specimen taken at Potchefstroom, is no doubt 
specifically identical with robertsi. 
Two adult male specimens were taken at Wonderboom Poort (24th 
March, 1915), by Messrs, van Dam and Roberts, who found them in nests 
provided with quite a normal type of lid. Although males of this genus 
are sometimes taken on the open veld, yet it seems clear that, like the 
males of other trapdoor-making genera, they normally occupy nests which 
closely resemble, except in size, those of the adult females. The patella 
of the palp is about 1J times as long as that of the first leg, and only very 
slightly shorter than the tibia of that leg. All the tarsi are scopulate, 
but there is no trace of a scopula at the apex of metatarsus I. 
