A Survey of the Scorpion Fauna of South Africa. 
lis 
sides of the tergite ; granulation of first caudal segment 
superiorly as in planicauda (q.v.); of second caudal segment 
occupying a rather deep oval depression extending over 
slightly more than half the length of the dorsal surface. 
Hand as in planicauda .... P. planicauda frenchi Pure. 
{(j) Last sternite without trace of median keels ; last tergite 
in its mesial area thickly granular, but not shagreened ; 
viewed from the side, the anterior portion of the granulated 
area on the upper surface of the first caudal segment 
scarcely if at all rises above the supeiior keel (in plani- 
cauda and frenchi that area rises distinctly above the superior 
keel anteriorly) ; granular area of the second segment 
occupying about f of the length of the surface, a little 
longer than broad ......... P. raudus Sim. 
(2) The granular or stridulatory area on the dorsal surface of the 
second caudal segment reaches to the hind edge of the segment. 
(h-p.) 
* Posterior upper edge of seco7id caudal segment strongly 
elevated and curved forwards in the middle, and to a 
less extent also in the third caudal segment, (h.) 
{h) Anterior edge of shagreened area projecting convexly 
forwards in the middle in caudal segments I and II ; in 
segment II that area is broadly and somewhat deeply 
♦ excavated in its anterior two thirds ; accessory crest of fifth 
caudal segment composed of strongly conical or sharply 
pointed tubercles ; brachium and hand comparatively stout 
P. capensis H. & E. 
** Posterior upper edge of second caudal segment quite 
straight, (i — p.) 
t Stridulatory area of second caudal segment composed of 
granules, or sometimes i^icluding short ridges, in 
which case no single ridge is so hroad, as to extend 
even halfway across the area in any part, (i — 1.) 
O Superior crest in segment V always distinct through- 
out the whole length and very strong, though 
slightly weaker in the middle of the .segment : 
accessory crest composed of very coarse sharply 
pointed or suhspiniform tubercles, (i.) 
(i) Caudal segments thickly granular at the sides and below, 
especially in the posterior segments. Fourth caudal seg- 
ment slightly wider than the first. Shagreened area of first 
caudal segment slightly concave throughout its length and 
anteriorly the surface descends less abruptly than in plani- 
cauda, the angle being rather more obtuse ; middle portion 
of last tergite rather coarsely, but not very closely granu- 
lated ......... P. transvaalicus Pure. 
OO Superior crest in segment V more or less obliter- 
ated in the middle of the segment, an indistinct 
row of 4-6 low rounded granules or tubercles 
representing the acce^'sory crests, (j — L) 
