— 145 — 



Papio tessellatus Eiiior and P. tessellatus silvestris Lorenz. 



a) 1 spécimen from Rutshuru and some skulls; 

 A) 4 spécimens from Masisi, i trom Mawambi; 

 2 from Makala and i from Avakubi. 



To Ei.LiOTs species P. tessellatus I count the dark Baboons 

 from the plains of eastern Congo. A skull of an adult maie, col- 

 lected north east of Kivu lias practicallv quite the same dimensions 

 as those I hav^e published from a Rutshuru spécimen. On the other 

 hand a maie skull from Mawambi has a little larger braincase, a 

 little shorter palate and nasals, etc. The différences are rather 

 small and might be understood as purelv individual, if they were 

 not connected with other characteristics. 



With regard to the exterior there is namely some difterences 

 bewe'en those Baboons, which can be assuraed to hâve corne from 

 the open country and those from the big forest. The former, which 

 represent the true tessellatus, hâve the light bands of the hairs « of 

 a darkish cream color », as Eixiot says, whereas the same of the 

 Forest Baboon are more distinctly vellow. Especially this is the 

 case in a conspicuous way on the lower back and on the hind legs. 

 The hands and the feet are also more intensely pure black in adult 

 spécimens of the Forest Baboon. The true tessellatus, on the other 

 hand, has a longer fur. AU taken together, skull characters, diffé- 

 rent colour and a différent biology, it appears quite possible that 

 the Baboons of the big forest may be considered as racially diffé- 

 rent from those on the plains. 1 am thus inclined to agrée with 

 Lorenz when he séparâtes the Forest Baboon under the name 

 Papio silvestris, but I cannot accept the différence to be of more 

 than subspecific value. 



The same author has also separated the Baboon of the Rutshuru 

 plains from P. tessellatus Elliot and called '\\. P. Graueri. This 

 proceeding dépends most probably upon the fact that Lorenz only 

 has had two female spécimens, on which he has based his descrip- 



(') K. Vct. Akiid. Handl., Hd. 52, n» 2, Stock-luiliii, 1917. p. 41. 



