102 Transactions of the Royal Society of South Africa. 
4. Dentition of movable finger very variable, but there is always an 
external and internal series, in addition to the main rows ; tergites with 
1 or 3 keels ; carapace without distinct granular keels or with indications 
of a pair posteriorly ; basal pectinal tooth of female often broadened or 
elongated, but sometimes unmodified ; vesicle with or without a tubercle 
inferiorly ......... Uroplectes, Peters. 
The granular teeth on the movable finger comprise 8 or 9 main rows 
and 8 or 9 inner enlarged flanking granules, but there are no outer 
granules whatever, though the proximal one of each main row may be 
slightly enlarged ; tergites with 1 keel ; carapace without keels ; vesicle 
without tubercle inferiorly ..... Karashergia, Hewitt. 
Fam. ScoRPiONiDAB. 
Sub-fam. Scorpioninae. 
1. On the ventral surface of the brachium, near to its posterior margin,, 
there are only a few trichobothria * ; ventral surface of coxa of pedipalp 
is not finely roughened on that portion which rubs against the maxillary 
process of the coxa of the first leg ; upper surface of hand generally with a 
finger keel ; humerus with distinct anterior and superior surfaces which are 
usually separated by a granular crest, but sometimes the crest is ill defined ; 
anterior margin of carapace without a deep posteriorly directed incision 
mesially ...... Opisthophthalmus,f C. L. Koch. 
On the flat ventral surface of the brachium, near to its smooth posterior 
keel, there are several rows of numerous trichobothria ; on the ventral 
surface of the coxa of the pedipalp in its basal half is a rather large matt 
area (finely granulated under low power of microscope), free of hairs, where 
it rubs against the maxillary process of the coxa of the first leg ; anterior 
margin of carapace deeply incised mesially ; upper surface of hand without 
finger-keel or any other keel. ..... Pandinus, Thorell. 
Sub-fam. Ischnurinae.\ 
1. Ventral surface of brachium with numerous trichobothria arranged 
in 1-3 rows near to the granular post-ventral border, and similarly also on 
the under surface of the hand, near its posterior margin ; tail strongly 
compressed laterally, often greatly elongated in the male, being always 
longer and more slender in the adult male than in females ; the two infero- 
* Setiferous pores, perhaps sensory in function. 
t This genus seems barely distinguishable from Scorpio, found in North Africa 
and Asia (see Kraepelin in Mit. a. d. Nat. Mus., Hamburg, xxx, p. 184), and may have 
to be united therewith. 
X This is given the rank of a distinct family, Ischnuridae, in Mr. Pocock's work 
the " Arachnida," British India Series. 
4 
