— 15° — 



tvpes ol landscape and numerous big rivers proves to be subdi- 

 vided in several zoogeographical provinces just with regard to this 

 group. During the preliminary and hurried examination of the 

 facts, which I hâve been able to undertake now, thèse provinces 

 appear to be the foUowing. I will, however, remark, that 1 am 

 not able to give anv absolute boundary lines except in some cases, 

 and il is needless to add that our knowledge about the fauna 

 especially of certain districts as yet is verv insufficient, so that 

 many additions and corrections must be expected. As a first attempt 

 to bring some knowledge about the gênerai distribution of the 

 Monkevs in Congo the following sketch may nevertheless not be 

 uncalled for, but it is natural, that in such a preliminarv review as 

 this several, on single spécimens based forms could not be consi- 

 dered, because too little is known about them. 



The eastern plains. 



If we begin in the east, we find there stretches of open country 

 which extend to Béni and occupy parts of the country as well north 

 of Lake Albert Edward as south of the same around Rutshuru. 

 The southern limit of this open land is probably the Virunga 

 mountains and on the western side the big forest forms the boun- 

 daryline. Thèse tracts of land are to some extent a continuation of 

 a similar landscape in Uganda. The Monkeys which live there are 

 also at home in Uganda viz. Papio tessellatits and Cercopithecus 

 pygerythrus centralis. 



The .*:quatorial forest. 



To the west of thèse plains we find quite a différent type of land- 

 scape, viz the big œquatorial forest which extends over vast tracts 

 of land. Towards the north its limits from a faunistic point of view 

 appear to be less well known. A fact is, however, that an in many 

 respects différent fauna meets in the Uele région. — To the œqua- 

 torial forest belong also, with regard to the fauna, more or less from 

 the same in the présent time detached forests near Rutshuru. — It 



