ZOOLOGY 



361 



The monkeys of Uganda number amongst them some remarkable types. 

 There is the beautiful colobus, whose name in Greek means " mutilated," 

 because the colobus monkey has by degeneration practically lost its thumb, 

 its hands being four-fingered only, and the place of the thumb marked, if 

 at all, by a minute wart bearing a tiny nail. The colobus monkeys are a 

 genus peculiar to Africa. With perhaps three exceptions they are remarkable 

 for their black and white coloration. The black is very black, and the white 



224. 'J'Wd liAliV r.AHDONS (I'.IPIO nuCL'J-.K.l /) FKOll THE lilFT VAI.I.KV 



is snowy white. The colobus has a long tail with an immense white plume 

 at the end. In certain forms found on Mount Kilimanjaro, this white 

 plume at the end so extends up the tail that the whole of this organ is a 

 creamy white plume about eighteen inches in length. Both sexes liave 

 stiff whiskers and beard of white, while the sides of the body have long 

 manes of white hair. In one rare species of colobus the white disappears 

 almost altogether, only being represented by a little fringe of grey. In 

 an entirely new species discovered by us on the north-west slopes of 



