— 152 



The western Tanganyika région. 



The red Colohus Graueri is tvpical for this région , where it 

 substitutes C. Ellioti of the big forest. With the latter it bas in 

 common Cercopithecus Deiiti, but C. leiicampyx bas there deve- 

 loped a soniewhat aberrant forin sihatui. 



The question about the black Colobiis of this and the foregoing 

 région is not quite clear yet. Probably there is sorae race of the 

 palliatiis group in both. 



The Katanga région. 



From this southernmost part of Belgian Congo two forest- 

 monkeys are known viz. one of the nose-spotted group : Cerco- 

 pithecus ascanius katangœ, and one of the /eîtcat/ipyx-gTOup : 

 C. opisthostictus . There is also found a short-maned black Colohus 

 showing resemblance to C. palliatus Sandbergi of northeastern 

 Angola. As there are much open countrv in this province we 

 also meet there a niember of the Cercopithecus pygcrythrus séries, 

 viz. the subspecies katmigensis and also a yellow Baboon, Papio 

 kindœ. 



The Uele région. 



North of the big forest where the same dissolves into less exten- 

 sive and less thick forests with intervening steppe country we meet 

 with regard to the monkeys a différent fauna. There is a Colobus 

 of the red group, C. brîcnneus, substituting Ellioti, noX. red however, 

 but brown. The nose-spotted Guenons are represented by Cerco- 

 pithecus Schmidti Schniidti, verv similar to C. Schiiiidti enkamer of 

 the big forest. Finally there is also a possibly somewhat différent 

 race of the widely distributed C.Brazzœ. In the open country lives 

 the great Baboon, Papio nigeriœ, and two races of Erythroccbus 

 patas described by Matschie. 



