A Survey of the Scorpion Fauna of South Africa. 
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may be more or less roughened and coarsely 
pitted or practically smooth and the keels 
smooth or weakly crenulated. Interocnlar 
area partly or wholly covered with the finest 
dust-like granulation which is not coarser 
than that at the hind angles of the carapace. 
Upper surface of hand in the female convex, 
coarsely granular, wrinkled, or tubercled, 
or sometimes nearly smooth ; in the male 
coarsely granular or tubercled . . . O. I. typicus. 
2. Inferior median keels of caudal segment I 
composed of a series of 6-10 coarse or very 
coarse granules, the space between the keels 
sometimes filled up with equally coarse 
granulation rendering the crests indistinct. 
Last sternite coarsely or very coarsely 
granular (about 6-12 irregular transverse 
rows may be roughly counted between 
anterior and posterior margins in the mesial 
part) . . . . . . .0.1. pugnax Thor. 
3. Hand of male covered with numerous isolated 
but not very coarse granules, considerably 
elongated and narrow, the length of the 
hand-back exceeding the breadth of the 
hand ; of female less convex and flatter than 
in tifpicu-s or pur,nax. Inferior keels of 
caudal segment I in the male crenulated ; in 
the female almost quite smooth except for 
one or two coarse pits and faint crenulations. 
Last sternite of male either quite smooth 
mesially or somewhat pitted or faintly 
furrowed transversely ; of female quite 
smooth . . . . . . O. I. austeroides Hewitt. 
Q. ChelicercB ivithoui stridulatory lamellae. 
4. Resembling typicuft, but hand of male narrow, 
its upper surfaces nearly smooth, though 
covered with fiat isolated granules of varying 
size and shape ; of female with the inner 
basal portion almost smooth, the surface 
generally being covered only with low 
irregular flattened granules or anastomosing 
elevations which become coarsely granular 
near the base of the immovable finger and 
along the inner edge of the hand. Last 
sternite of male coarsely granular mesially 
(about 15-20 rows can be roughly counted 
between anterior and posterior margins). 
Inferior median keels of first caudal segment 
of male composed of about 12 or more coarse 
granules. Fifth caudal segment of male 
