— 15 — 



and polished; the last at most finely shagreened and on 

 each side granulated, with the four weakly developed keels. 

 Tail gradually expanding to the middle of the 4-th segment, 

 with all the joints short and thick; joints 1—4 with ten 

 keels; the 5-th joint is just at the base of the vesicle very 

 distinctly attenuated, below and on the sides very thickly 

 and coarsely granular; intercarinal spaces of the first four 

 joints of the tail on the upper surface smooth and polished, 

 but on the sides and below — granular; the granulation beco- 

 ming thicker on the posterior joints; anal lobes not dentate; 

 pectinal teeth 27—28 (?) or 32—34 (c?) of which the basal 

 tooth is moderately wide, equalling in width about 3—4 of 

 the remaining teeth together; movable digits of palpi with 

 11 — 12 rows of. granules; total length about 65—66 mm. 



Distribution. This species was based upon two specimens 

 from Mombasa; the other specimens were found at Geriama 

 near Fuladoya (Pocock 1896, p. 425), in the Taru desert at 

 Machuma (Pocock, 1898, p. 499), at Pokomonie and Wanga, 

 on the coast of the Indian ocean (Kraepelin, 1913, p. 172), 

 in the basin of the Tzavo-river (Birula, 1915 p. 60) and in 

 the Kenia district at Njoro and at northern bank of Guaso 

 Nyiro below Chanler Falls (Ldnnberg, 1912, p. 2); accor- 

 ding to Kraepelin (1. cit.) a specimen of this species 

 was obtained at Kilimanjaro in German East Africa. This 

 species differs markedly from P. Uosoma in the uniform 

 yellow colouring of the tail. Two specimens ($ juv. and cT 

 semiad.) of the collection of the Expedition taken on the 

 shore of Tzavo-river 12—15 VIII. 



5. Odonturus dentatus Krsch. 



1879. Odonturus dentatus, Karsch, P., Sitzber. Gesellsch. 

 iiaturf. Fr. Berlin, p. 119 (loc. typ. «Mombasa»). 



Synonym a: Rhoptrurus dentatus, Simon, E., Ann. soc. 

 entom. Prance, p. 130, 1890; Karsch, P., Berl. entom. Zeitsch., 

 V. XXX. p. 77, 1886; Pseudobiitfms dentatus, Kraepelin, K., 

 Mitth. naturh. Mus. Hammburg, v. XIII, p. 121, 1896; Po- 

 cock, R., Proc. Zool. Soc. London, p. 499, 1898; Odonturus 

 dentatus, Kraepelin, K., Mitth. naturh. Mus. Hamburg, v. 

 XXX, p. 172, 1913; Birula, A., Ann. Mus. Zool. Petrograd, 

 V. XIX, p. 118, 1914. 



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