— 23 — 



was found at Taveita and at Voi near KilimaJijaro (Pocock 

 1890, p. 443, Birula 1915, p. 57); the same variety was pro- 

 bably obtained also by Lonn berg (1912, p. 3) in the district 

 of the mount Kenia on the northern side of Guaso Nyiro 

 river below Chanler Falls. The typical form Lychas biirdoi, 

 which has originally been recorded from the northern part 

 of German East Africa, differs from the variety riigidosus in 

 some slight particulars: namely — the anterior lateral eye on 

 each side of the carapace is not smaller than the posterior, 

 and the median is slightly larger than the former; the keels 

 on the 5-th abdominal sternite and on the first caudal joint 

 are altogether absent; the 5-th caudal Joint above is smooth 

 and at the sides and below only weakly granular; the second 

 caudal joint is marked with ten keels, of which the lateral 

 accessorial keels are almost fully developed, or represented 

 only on tlie posterior half of the joint. The typical form of 

 this species, L. burcloi burcloi, is widely distributed in the more 

 southern parts of East Africa, in the German colonies from 

 Kilimanjaro southwards to the lake Tanganyika, Nyasa and 

 Zambesi river (K r a e p e 1 i n 1913, p. 175), in British Central 

 Africa (Blanty re— Kraepeli n 1. cit.) and also in Rhodesia 

 (Broken Hill— K r a e p e 1 i n l.cit., Petauke — H i r s 1 191 1, p. 4). A 

 single specimen of X. biirdoi riigulosus ($ semiad.) was obtained 

 by the members of the Expedition at Naivasha-lake 11—13 VII. 



Lychas obsti Krpl. 



1913. Lychas obsti, K r a e p e 11 n, K., Mitt, naturh. Mus 

 Hamburg, v. XXX, p. 175. 



Synonym a: Lychas obsti, Birula, A., Ann. Mus. Zool. 

 Petrograd, v. XIX, p. 120, 1914; id., Revue russe d'Entomol., 

 V. XV, p. 56, 1915. 



Colour of body pale fulvous, variegated with deeply infus- 

 cate or black spots and bands and partly reticulated with 

 fuscous lines; trunk above with five black longitudinal bands; 

 the black median keel interrupted on each tergite with a 

 yellow spot; sternites yellow, the 4-th with black lateral mar- 

 gines, the 5-th black spotted; tail spotted; the terminal part 

 of each joint mostly infuscate; 5-tli caudal joint and vesicle 

 infuscate throughout; humerus of the palpi spotted or reticu- 

 lated; brachium and hand mostly deeply infuscate throughout, 



