A Survey of the Scorpion Fauna of South Africa. 
181 
and more slender than that of female. Only in the first caudal segment is 
there a granular superior keel, the last granule of which is a little enlarged, 
whilst in the second and third caudal segments this posterior granule is all 
that remains of the superior keel. In the fifth caudal segment the posterior 
mesial excavation of the upper surface for the reception of the vesicle is well 
defined and sharply marked off from the median depression anterior thereto, 
and this excavation is coarsely granulated in its basal portion. The tubercle 
at the base of the aculeus is blunt. 
The measurements of the male are : Total length, 37*5 ; length of 
tail 22, of first caudal segment 3, of second caudal segment 3-3, of third 
■ caudal segment 3-65, of fourth segment 3*9, of fifth segment 4"1 ; breadth 
of first segment 2*2, breadth of fifth segment 2'6; length of hand 6-5, length 
of movable finger 4*4, length of carapace measured along the midline 3*7. 
The female differs markedly from that of Fischeri, as represented in our 
collection by a specimen from Somaliland ; in the latter the tail is much more 
slender and more sparsely punctured, the posterior excavation of the fifth 
caudal segment superiorly is not sharply defined and not granulated, and the 
basal pectinal tooth is very broad. 
Opisthophthalmus Wahlbergi, Thorell. 
Salisbury ( — Hirschorn). 
Opisthophthalmus carinatus, Peters. 
Tigerkloof, near Vryburg (Miss E. Friedlander) ; Grootfontein, South- 
West African Protectorate (Mrs. Gr. A. Thompson) ; Williston (C. 
Hassard) ; Kaalkfontein, South-West Africa (E. M. Truter) ; Campbell 
(D. Drever) ; Orgers, Prieska District (J. E. Ball) ; Kuruman ( — Price). 
Opisthophthalmus opinatus, Sim. 
Keetmanshoop (E. Murray). 
The two male examples have each 26 pectinal teeth on each side, the 
scape of the pecten being broadly rounded or very obtusely angled at the 
base l3ehind, though the portion devoid of teeth is presumably much less 
than in the female. Interocular area smooth, except anteriorly, where there 
are a few scattered granules. In the type male of scahrifrons the scape of the 
pectines is rectangula,r at the base behind. The shape and granulation of 
the hand is very similar in the two species. The male of o])inatus is larger 
than that of scahrifrons, the carapace of the former being 14 mm. long. 
Opisthophthalmus intercedens, Krpln., var. nov. pluridens. 
This form is represented by three specimens collected by Dr. E. Broom 
at Campbell, and at a locality between Campbell and G-riquatown. The 
types of intercedens were young examples from Kubub, and when the 
characters of the typical form are better known, the distinctive features of 
