A Survey of the Scoryion Fauna of South Africa. 
149 
a^"*. Hand of female flattened, its width not or scarcely ex- 
ceeding the length of the brachium along the upper 
side ; of adult male greatly elongated, the length of the 
hand-back considerably exceeding the breadth of the 
hand. Humerus of male elongated, decidedly longer 
than the brachium. Terminal tooth of superior caudal 
crests III and IV enlarged and spiniform. Sternites 
all quite smooth, and inferior surface of caudal seg- 
ment I free of granules or with only a few weak ones, 
the inferior keels strong, not granular, but with a few 
coarse pits, and occasionally crenulated in the posterior 
half O. aiisterus Karsch. 
b^"*. Sand of adult female convex above and very wide, its 
width much exceeding the length of the brachium along the 
upper side: of adult male with the hand-back usually not 
so long as the hand is loide {longer in austeroides, how- 
ever). (a^»-b^^.) 
ai5. Tarsus IV with 3 (sometimes 4) spines on the 
external terminal lobe, and no external spines on 
the under side ; tarsus III with no (very rarely 1) * 
external spine on the under side, and 4 (very 
rarely 3) on the external terminal lobe : superior 
terminal process of tarsi very small, much shorter 
than the lateral lobes. Superior caudal crests II-IV 
with enlarged terminal tooth. All the sternites of 
the male very coarsely granular, especially in the 
middle ; of the female with low transverse granules 
in the middle of V, and often with traces of a weak 
granulation in the middle of III and IV. Infero- 
median keels of caudal segments I and II in the 
female replaced by coarse broadly transverse 
granules O. crassimanus Pure. 
b^^. Tarsi III and IF wifh 4 spine.s on the external lobe and 
1-3 {often 0 in glabrifrons) external spines on the tinder 
side also. Terminal tooth of mperior caudal crests not or 
only slightly enlarged. 
Superior process of tarsi shorter than the terminal 
lobes. Adult male with all the sternites thickly and 
uniformly granular throiighout,the inferior median 
keels of caudal segment I entirely obsolete. Last 
sternite of female weakly granular or obscurely 
rugulose. Adult female with inferomedian keels 
of caudal segment I either quite obsolete, the 
intervening space between the keels being choked 
with granules and the keels themselves merely 
indicated as the inner margin of the inferolateral 
groove, or more or less distinct as weakly crenu- 
lated or granular keels; of II either nearly obsolete 
vor quite distinct O. nitidiceps Poc. 
