﻿ARKIV FÖR ZOOLOGI. BAND 4. N:0 15. 



2, Greater part of tail white or at least greyish white, 



a. »Basal two thirds of the tail», »greyish white 



with merely a scarce intermixture of black 



hairs», below as a rule altogether white {6). 



White tail-tuft greatly developed {6). 



C. poliurus. 



Omo river north of Lake Ru- 

 dolf. Shoa. 

 /?. Tail entirely covered with very long white hair 

 except for a short space at the base above {S). 



C. caudatus. 



Kilimandjaro, Ta veta, Meru, 

 Kahe, Kenia. 



Without white måne. 

 I. Entire tail white. 



1. Tighs white. 



C. vellerosus. 



Gold Coast, Togo. 



2. Tighs black like the rest of the body. 

 a. Body with long black hair {14). 



C. ursinus. 



Sierra Leone, Liberia. 

 §. Body with short black hair. Head, neck, and 

 shoulders »with long, coarse flowing hair, of a 

 dirty yellowish colour mixed with black» 14). 



C. polycomos. 

 Liberia. 



These different forms group themselves thus, as it seems, 

 naturally to a certain number of species with their geografic 

 subspecies in the following way: 



1. Colobus sata7ias. Waterhouse 1838. 



2. Colobus angolensis. Sclater 1860. 



