Annals of the Transvaal Museum, 
149 
Tergites finely shagreen ed, the median keel moderate or very weak, 
the last tergite without keels or with the merest indication of two oblique 
ones laterally. 
Sternites. First four sternites smooth and polished throughout except 
for some fine shagreen at the anterior corners of the first only : fifth 
sternite smooth anteriorly but granular over the hinder half or two-thirds 
of its surface, entirely without keels. 
Tail. The tail is relatively short, and its segments stout, the upper 
surface of each segment being grooved. Upper surface of segment 1 is 
more or less sparsely covered with fine granules and there is a small area 
similarly granulated about the middle of the lateral surface posteriorly, 
but otherwise that surface is smooth : the superior keel is very weak and, 
as in all the segments, is strongest anteriorly, the middle and posterior 
portions being barely distinguishable, whilst two other lateral keels are 
feebly represented in the posterior portion of each lateral surface : the 
granular margin which bounds the granulation of the ventral surface is 
composed of smaller granules than those in segments 2 and 3 and the 
posterior transverse portion is not a continuous ridge as in those two 
segments. Segment 2 is similar but, apart from the rudimentary keels, 
the upper and lateral surfaces are devoid of granules : on the ventral 
surface the granular area has a well defined margin of granules at the 
anterior edge of the segment — which is not the case in segment 1 — this 
row of granules extending upwards about half way along the anterior 
edge of the lateral surface. Segment 3 is similar thereto but differs in 
that only one of the two lateral keels is present whilst the superior keel in 
its anterior half is strongly developed as a row of granules ; the granules 
on the anterior edge of the lateral surface extend upwards for rather more 
than half the total distance. In segment 4 the granulated area of the 
ventral surface is absent but the entire anterior edge of the segment 
ventrally and laterally is granular : there are no ventral keels but the 
posterior portion of the lateral keel is strongly developed (it is in the same 
line with the anterior portion of the superior keel of segment 5). Segment 
5 has large scattered granules but no keels on the ventral and lateral 
surfaces of the posterior half. The vesicle is broad and short, the lower 
surface with a few coarse granules : the aculeus is short and has no 
tubercle interiorly. 
Pedipalps. Femur and tibia finely granular above, the former with 
a rather ill-defined supero-anterior edge formed by a row of slightly 
enlarged granules : tibia strongly prominent on its anterior side, its length 
about twice its greatest breadth. Hand short and small, slightly narrower 
than the tibia, rounded, not angular, smooth above and below : fingers 
about 1;^- times the length of the hand back. 
Legs : external surface of femur finely granular, of tibia only granular 
in the inferior half. 
Peetines with 11-13 teeth, the basal one not enlarged: the scape 
toothed throughout its length and angular at the base behind, the basal 
lamella carrying 1 or 2 teeth. 
Measurements. Total length 28 mm., length of tail 13, of hand 4, of 
cephalothorax 2 ’8, width of first caudal segment 2 mm. 
Family SCORPIONIDAE. 
Opisthophthalmus wahlbergi , Thor. 
Dug up from sandy soil at Wasserfall, Narudas Slid and Kraikluft, at 
elevations varying between 4000 ft. and 5100 ft. The series includes 
