A Survey of the Scorpion Fauna of South Africa. 159 
Lastly, a distinct form occurs on the Matoppos, South E,hodesia, being 
characterised by the complete absence of granulation on the sides and 
lower surfaces of the vesicle in the female. This variety, now designated 
jEZ". troglodytes var. nov. matoppoanus (Text-fig". 4 (7) ), is represented in the 
collection of the Rhodesian Museum by three adult female examples, two 
of which were taken on the Matoppos by Mr. Gr. Arnold, whilst the third 
and largest also came from the neighbourhood of Bulawayo. The characters 
are: Pectinal teeth 16-17 in the Matoppo specimens, 15-16 in the third 
example ; tail a trifle stouter than that of the common form at Serowe, the 
first segment being noticeably shorter and stouter ; vesicle smooth at the sides 
and below, but with more numerous hair ]3its than in the Serowe females ; 
anterior margin of carapace not quite straight, but only very shallowly 
emarginate. 
Measurements of largest example. — Length of carapace 18*75, breadth of 
carapace 18, length of first caudal segment 9 "9, of second segment 12*15, 
of third segment 11*85, of fourth segment 13*7, of fifth segment 13, of 
vesicle 10*35 ; posterior height of first segment 4*5, posterior breadth of 
same 3*5 ; height of vesicle 4, breadth of vesicle 3-5. 
The male thereof is not known with certainty, as there are no specimens 
actually labelled from the Matoppos in the Ehodesian Museum, but in their 
collection is an adult male, from the neighbourhood of Bulawayo, which 
I suspect to be that of matoppoanus. The characters of this male are as 
follows : Vesicle granulated at the sides and inferiorly, but not very densely 
so ; pectinal teeth 21-22 ; anterior margin of carapace shallowly excavated ; 
tail (including vesicle) 6 times as long as the carapace, the caudal segments 
being less elongated than, and not so greatly compressed laterally as in the 
Serowe males, the length of the fifth segment being a trifle less than that 
of the hand-back ; superior crests of second and third caudal segments 
weakly denticulated only in the posterior half of each segment, the terminal 
tooth not clearly subspiniform. 
Measurements. — Length of carapace 16*5, breadth of same 16*5, length 
of first caudal segment 15*15, of second segment 18*5, of third segment 18 5, 
of fourth segment 19*8, of fifth segment 18, of vesicle 10, of hand-back 18*5, 
of movable finger 14*25, of humerus 16*5. 
This male somewhat resembles that of H. troglodi/tes var. nov. dentatus, 
but the stronger denticulations of the superior caudal crests of the latter 
present a marked point of difference. 
The Ehodesian Museum has also a fourth adult female example which 
resembles matoppoanus very closely, but differs as follows : Superior crests 
of second caudal segment rather strongly denticulated (only very weakly 
denticulated in matoppoanus) ; caudal segments rather deeper and shorter ; 
pectinal teeth 16-19. 
Measurements. — Length of carapace 17*6, breadth of same 17*6, length 
