A Survey of the Scorpion Fauna of South Africa. 
127 
10. Similar to friangulifer, but vesicle of male not very- 
different from that of the female, without a distinct flat- 
tened sole or strongly projecting anterior prominence, 
although a well developed tubercle is present. Caudal seg- 
ment V in the male with a distinct granular superior crest, 
though somewhat interrupted in the middle. Female 
without a distinct tubercle at the base of the immovable 
finger. General colouration more or less olive-green . U. olivaceus, Poc. 
D. Terqites as in B and C, the lateral crests h^'mcf occasional! y repre- 
sented hy a single enlarged granule on each side ; tail quite without 
keels on its lower surfaces, the first three segments being smooth in- 
feriorly and the fourth and fifth and vesicle more or less granular; 
superior keels distinct with an enlarged terminal tooth ; hand enlarged 
in the male and with a more or less distinct Inhe at the base of the 
movable finger, hut n ithout a tubercle at the base of the immovable 
finger In either sex ; on the movable finger the 2 distal te^th of each 
median row are enlarged and form a trio with the adjacent tooth of the 
inner series in the distal lialf of I lie series. (11 — 14.) 
11. Lower surface of vesicle and of caudal segment V finely- 
granular ; no inferolateral crest or edge on caudal segment 
V ; lateral crests of tail very weak, only the superior lateral 
being represented on segments II-IV. A continuous median 
flavous band on the tergites ...... U.formosus Foe. 
{a) A more deeply pigmented form, with tergites almost entirely 
smooth and polished ; superior crest of caudal segment V forming 
a comparatively high curve and the upper surface of the segment 
deeply excavated ; terminal tooth of superior crests of II and III 
greatly enlarged in the male : caudal segments relatively short 
and deep. Last sternite almost wholly black, a yellowish spot in 
the middle U. formosus tgpicus. 
(,13) Very like tgpivus, but not so deeply pigmented, the last sternite 
yellowish with a black spot on each side ; tergites rather more 
granular ......... U. formosus spenceri, Poc. 
(y) Tail segments longer, superior margin of V not so strongly 
curved and the upper surface not so deeply excavated ; terminal 
tooth of superior crest of III, but not of II, greatly enlarged in 
the male. Tergites very finely granulated. Legs with dark bands, 
last sternite quite pale ........ U. formosus, var. 
nov. maculipes. 
12. The lower surface of the vesicle and of caudal segment V 
more coarsely and sparsely granular ; superior keels 
stronger ; lateral crests of tail fairly well developed, inferior 
lateral as well as superior lateral keels being represented 
on segments II-IV; superior crest of V forming a low curve ; 
inferior lateral crest of V generally marked by a more or less 
distinct edge or by a row of granules at any rate posteriorly, 
but sometimes almost obliterated ; terminal superior tooth 
on caudal segments II and III slender and curved forwards 
at the apex in the male. Tubercle below aculeus sharply 
