A Survey of the Scorpion Fauna of South Africa. 
179 
locality. A large male from Tsessebe, characterised by incrassated hands 
and short digits, has but a weak development of ridges on the first caudal 
segment ; definite ridges are indeed absent in the first half of the stridulatory 
area and are cj[uite short in the posterior half of the segment. An adult 
female from Pienaars River, with slender hands, long digits, and a large 
rounded lobe at the base of the pectines, has a much stronger development 
of ridges on the first caudal segment ; distinct ridges occur over the whole 
length of the stridulatory area, some of the posterior ones extending across 
the entire width of the area. In a small male from Palapye Ed. those 
ridges are more strongly developed than in the Tsessebe specimen, but not 
so much so as in the example from Pienaar's River. 
Paeabuthus tkansvaalicus, Purcell. 
Lilliput Station, Zoutpansberg District (Transvaal Museum). 
Uroplectes triangulifer tristis, Thorell. 
Klipspruit, Utrecht District (J. Breijer). 
The specimens are nearly black throughout, but the fingers are pale. 
Tergites and carapace strongly granulated with no smooth areas. Basal 
pectinal tooth in female not enlarged. Lower surfaces and sides of all the 
caudal segments closely and rather coarsely granulated in the female, and 
the last sternite is also rather strongly granulated except anteriorly. The 
.tail of the male is much less strongly granulated, the fifth segment being 
only sparsely granulated, the last sternite is free of granules, and the vesicle 
is not so strongly flattened ventrally as in the typical form of the species. 
Total length, M. 33, F. 36 ; length of tail, M. 18-8, P. 19-6. This form 
is a very distinct one, quite different from that from the Eastern Transvaal 
that I have previously referred to tristis. 
Uroplectes triangulifer, Thorell. 
Yenterskroon (M. H. Viljoen) ; Craighead and Line Drift in the Peddie 
District (B. Marais) ; Aliwal North (Sr. Stephany) ; Maseru (J. Midgley). 
In the Venterskroon specimen, a female, the basal pectinal tooth is slightly 
enlarged. 
The ISTatal Museum has an adult female from Mfongosi, Zululand 
(W. E. Jones), which closely resembles olivaceus in colour. There is, how- 
ever, a fair-sized tubercle near the base of the movable finger, and the hand 
is stouter than that of the female of olivaceus. The basal pectinal tooth is 
very broad. In olivaceus it is enlarged, but is not so broad as in the present 
example. 
Two female examples from Bleskop, Rustenburg District, in the collection 
of the Transvaal Museum, seem to represent another distinct variety. The 
first caudal segment inferiorly is not granular, but coarsely punctured some- 
what as in flavoviridis all the succeeding caudal segments are granulated 
