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



well-defined black longitudinal lines, one inferior and median 

 and three on each side, the upper marking the superior keels ; 

 the vesicle distinctly yellow-lined. 



Loc. East London (H. A. Spencer). 



In addition to the large number of examples obtained at 

 the above locality Mr. Spencer brought back others from Port 

 Elizabeth which, while agreeing in the main with the typical 

 East London examples, differ from them in being rather more 

 deeply pigmented. For example, the >< -shaped marks on 

 the terga are less distinct, almost the entire upper surface of 

 the brachium and humerus is fuscous, and the black lines on 

 the tail are wider, so that sometimes they anastomose. 



Uroplectes trianguUjer^ Thor. 



Uroplectes triangidifer, Thor., Actes Soc. Ital. Sci. Nat. xix. pp. 123- 

 126 (1876). 



On pi. xiii. fig. 5 of my paper (Proc. Zool. Soc. 1890) upon 

 South-African Buthidse I give a figure of the male of this 

 species taken from an example collected at Pietersberg 

 (Transvaal) by Mr. C. R. Jones, this being the only example 

 contained at that time in the Museum collection ; but since 

 then we have received fresh examples from Port Elizabeth 

 (H. A. Spencer) and Basutoland (B. G. Wroughton). 



The differential characters of this form and its allies are 

 pointed out in the synopsis of the species. 



Uroplectes chlorodermus, sp. n. 



Uroplectes fiavoviridis, Peters, Pocock, P. Z. S. 1890, p. 135, pi. xiv. 

 fig. 5 ; not U. fiavoviridis, Peters, Mon. Ak. Wiss. Berlin, 1862, 

 p. 616. 



This species, of which I have given a full description of 

 both sexes in the Proc. Zool. Soc. for 1890, I formerly re- 

 garded as identical with U. fiavoviridis of Peters, from Tette; 

 but I am now of opinion that the two must be regarded as 

 distinct, on the grounds that Peters describes the underside of 

 the tail of his species as shining and finely granular, whereas 

 in my specimens its first three segments are quite smooth 

 and studded with coarse punctures, which can scarcely have 

 been overlooked by Peters and, still less, described by him as 

 fine granules. Moreover, this author states that the basal 

 pectinal tooth is of striking size and falciform ("sichelformig") 

 in shape, from which I infer that he had before him a scorpion 

 with the sickle-shaped basal pectinal tooth of U. planimanus 

 or U. lunulifer, and not an example with this tooth merely 

 expanded, as is the case in U. chlorodermus. 



