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NA TUJRA T ITIS TOR V. 
groups of Monkeys must be admitted, for the Himalayas are as old as the Alps, and as both have 
been worn down into their present condition of peak, pass, and valley since they were uplifted, their 
age is incalculable by years. The former connection of Africa and Asia by means of intermediate 
land, which is now the floor of the Indian Ocean, to the west of Hindostan, may be reasonably asserted 
to have been severed at the same time when the mountains far away to the north-east received their 
breadth and height. So that before these great terrestrial changes occurred, Semnopitheci could have 
either an Indian or an African home. Disuse of the fore-thumbs in branch-crawling or swinging 
may then have commenced before that geological age in which these things happened, and it may 
have progressed very decidedly in Africa, and not so much in Asia. Hence the Semnopitheci 
here have rather small thumbs, and the African groups, separated by the physico-geograpliieal change, 
and disusing generation after generation, have gradually lost the structure. 
The Colobi resemble the Semnopitheci in the construction of their compound-looking stomach. 
THE GUEREZA * 
hair, resembling the edge of a cloak, along its sides, and a long tail with a tuft to it. The natives 
chase it, and are fond of having some of their long hairy skins to cover their shields with. 
Assembling in little troops, the Cfuereza keeps well up in the tallest trees, in the neighbourhood of 
running water. They feed on fruit, grain, and insects, and are inoffensive and wild. The fur is 
certainly very prettily arranged, and the black and white truly oppose each other well. The colour of 
the fur of the head and of the greater part of the body is black, but the forehead is white, so are the 
sides of the face, the throat, and the sides of the neck. There is a mantle-like mop of long hairs 
starting from the region near the ribs, and the lower part of the back, and covering the flanks in 
a train behind. It is of a white colour, and exists in both sexes ; nevertheless, it is longest in the 
females and adults. The tail is white, hairy, and tufted. 
Another of the Colobi has a very dignified look given to it by a large mass of hair which covers 
its neck and shoulders like a little cloak. It has slim legs and a long tail. For some reason or other 
the natives in the neighbourhood of Sierra Leone call it the King of the Monkeys. The face and 
limbs and body are black, and a great mass of hair starting from the forehead and brushed back from 
the sides of the face and chin, the neck and shoulders all round, falls down on all sides. This is of a 
dusky yellow colour. The tail is white. It is called the Cloaked or Many-haired Colobos ( Colobos 
polycomos). 
As if to contrast kinds of the genus Colobos, which have great general resemblances, Nature has 
provided some with red-coloured fur, instead of black and white ; for instance, the Bay Monkey (Colobos 
ferruginous); and finally, one very interesting species which, like all those mentioned, except the 
Guereza, come from West Africa, has a short fur of an olive colour, but with a grey tint beneath 
and on the limbs. It lias no long hairs on the body, and its tail is long and thin. This Colobos 
verus has not a vestige of a thumb. There are eleven species of this genus. 
Besides the fossil Semnopitlieeus found in the Himalayas others have been discovered in Greece, 
Wurtemberg, and at Montpellier, and in strata of Mid- Tertiary and of Pliocene Ago. 
# Colobos guereza. 
