226 THE GEOGRAPHY OF MAMMALS 



coast. One of them, Kirk's Colobus (C. kirki) so far as 

 has yet been ascertained, has been only met with in the 

 island of Zanzibar, where, however, it is said to be now 

 nearly extinct. Another well-marked species, the Guereza 

 (C. guereza), is peculiar for its long-haired flanks and tail. 

 It was originally discovered in Abyssinia, but is repre- 

 sented by closely allied forms in British East Africa and 

 on the Niger and Upper Congo. 



The Guenons, or long-tailed Monkeys of the genus 

 Cercopithecus, which we now come to, are likewise entirely 

 confined to the Ethiopian Region, and being exclusively 

 inhabitants of forests, are naturally most numerous in the 

 wooded districts of the west coast and in the great wooded 

 valley of the Congo. They are very numerous in species, 

 as many as forty different kinds having been discriminated, 

 but are mostly confined to small specific areas, not more 

 than one or two species as a rule occurring in the same 

 district. Allied to the Guenons are the Mangabeys 

 (Cercocebus) with about six known species, which has 

 nearly the same area of distribution. 



Both Guenons and Mangabeys do well in captivity, and 

 are always well represented in the Zoological Society's 

 monkey-house, where they have, in some cases, bred young 

 ones. As many as twenty -four different species of 

 Cercopithecus will be found registered in the Zoological 

 Society's Catalogues, and amongst them are some of the 

 most beautiful and brightly coloured of the Quadrumana, 

 such as the Diana Monkey (C. diana) and Brazza's Monkey 

 (0. brazzte). 



In the Oriental Region the corresponding form of 

 monkey is the Macaque (Macacus), about fifteen species of 

 which are distributed over Southern Asia and its islands 



