382 Mr. R. I. Pocock on South-African Scorpions. 



it was under the guidance of this description that Prof. Krae- 

 pelin was led to locate the species in close proximity with 

 U. lineatus. Its true position amongst the South-African 

 species may be seen by referring to the synoptical table. 



Uroplectes lineatus (C. Koch). 



Tityus lineatus, C. Koch, Die Arachiiiden, xi. p. 7, fig. 854 (1845) ; 

 Kraepelin, Jabrb. Hamb. Wissen. Anst. viii. p. 89 (1891). 



During recent years the British Museum has received a 

 large number of specimens of this species from Cape Town 

 and from Wynberg, Hoet's Bay, and Kalk Bay in the neigh- 

 bourhood (//. A. Spencer), also one from Simon's Town 

 (De la Garde), making a total of 17 specimens of different 

 sizes and sexes. The males differ from the females in having 

 the tail longer, the hand thicker, and the basal pectinal tooth 

 not enlarged. 



The colour is very fairly constant, that of the upperside 

 of the trunk consisting, roughly speaking, of three yellow 

 bands alternating with four black ones; but the yellow bands 

 are not continuous, the median one being broken up by a 

 pigment patch on the keel and the lateral ones being in reality 

 extensions of the > < -shaped markings so characteristic of 

 many species of this genus. The tail is banded with black, 

 the bands mostly marking the keels, but at the sides, especially 

 of the posterior segments, they show a tendency to broaden 

 and fuse ; the lower side of the first three segments is pale, 

 with a fine median black line ; the vesicle is always yellow. 



Uroplectes insignis, Poc. 

 Uroplectes insignis, Poc. Proc. Zool. Soc. 1890, p. 131, pi. xiii. fig. 4. 



This species was based upon a couple of examples obtained 

 by Dr. Dobson on Table Mountain, and at the time, owing to 

 scarcity of material of this form and of U. lineatus, I was 

 unable to compare the two in any detail. But, thanks to the 

 acquisition of a large number of examples from Table Moun- 

 tain {H. A. Spencer), I am now able to point out that it 

 resembles U. lineatus in almost all structural characters, 

 although differing considerably and, apparently, constantly in 

 being far more strongly pigmented. For instance, the banding 

 of the trunk observable in lineatus does not appear here, the 

 two lateral yellow bands of the former being reduced to the 

 > < -shaped markings ; the vesicle, moreover, is black below 

 and at the sides, with four fine yellow lines, and the median 

 black stripe on the lower surface of the tail is broad and 



