— 12 — 



Distribution. I^ritisli East Africa: occuring in abundance 

 in tlie basins of Tana and Tzavo rivers: at Voi, Bura, Taveta, 

 Chala- and Jipe-lalvcs, Temba (Birula 1914 and 1915), also 

 at Ndara and on Athi-plains (Pocock, 1896, p. 425); thence 

 spreading southwards into German East Africa and north- 

 wards into British Somaliland, Boran Country (Pococlc, 1898, 

 p. 499). A species belonging to the ethiopian section of the 

 subgenus Hottentotta^ of which the westafrican B. liottentotta 

 (Fabr.) is the type ^), and closely resembling B. (H.) minax 

 (L. Koch) from Erythraea and Abyssinia in size and colour, 

 but differing in particulars 2). 



A number of specimens of various ages and both sexes 

 was obtained by the members of the Expedition in several loca- 

 lities: Voi-Bura, d ad., $ ad., 24—25 VII— Taveta, 31 VII, 9 se- 

 miad. — Chala-lake, 4 VIII., <S' ad., ? ad. (fert.), 2 juv. — Jipe-la- 

 ke, 7. VIII, c? semiad., $ ad. — Tzavo-river, 12 — 14 VIII, 2 9 ad. 

 (fert.)— Temba, 14 VTIl., ? ad. 



2. Buthus (Hottentotta) polystictus Poc. 



1896. Buthus polystictus, Pocock, R., Ann. and Mag. nat. 

 Hist., ser. 6, v. XVIII, p. 178, pi. XI, fig. 1 (loc. typ.: «Goolis 

 Mountains inland of Berbera*). 



S y n n y m a: Buthus polystictus, Pocock, R-., Proc. 

 Zool. Soc. London, p. 57, 1900; Buthus emini polystictus, 

 Kraepelin, K., Zool. Jahrb., Syst., v. XVIII, p. 560, 1903; 

 Buthus polystictus, Lonnberg, E., Ark. f. Zool, v. VII, M 24, 

 p. 2, 1912. 



Colour of body a clear lemon-yellow, spotted with black; 

 each tergite except the last with five transverse black spots, 

 the three median of which are on the three keels; tail below, 

 palpi and legs with black spots; in granuhation and develop- 

 ment of crests and keels the species conies near Buthus 

 eminiy but the superciliar crests of the ocular tubercle are 

 granular; the upper surface of the segments of the tail is 

 much less strongly excavated and the superior keels are nei- 

 ther so high, nor so coarsely granular; the vesicle is larger 

 and sligthly geniculate under the aculeus; pectinal teeth 18 — 20 

 (9); total length circa 55 mm. 



1) A. Birula, Ann. Mus. Zool. Petrograd, v. XIX, 19U, p. 121. 

 h A, Birula, op. cit., p. 123. 



