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Show 3 2 6 MR. 11. LYDEKKER ON GUEREZA MONKEYS. [N o v . 2 8 , expand into a brush. A further development is exhibited by the typical form of Colobus palliatus (text-fig. 55), from British East Africa and the neighbouring districts, in which the two lateral white face-tufts are connected by a white band across the brow, while the shoulder-tiifts are of considerably larger size, a small whitish patch beneath the tail occupies the perineal region, and the tail has its terminal third whitish, the middle third grey, and the remainder black. A nearly allied type is found in the form of the Mountain Guereza (C. ruwenzorii), of the Ruwenzori district, in which the white perineal patch has assumed much larger proportions, although the extreme tip of the tail is alone greyish; the latter feature placing the species, so far as the colouring of this appendage is concerned, next to the Black Guereza. Text-fig. 55. Mantled Guereza (Colobus pa Hiatus). From the three foregoing black-and-white forms there is an easy transition to Sharpe's Guereza (C. sharpei), of Nyasaland, in which, as shown in text-fig. 56, p. 327, the white brow-band, face-, throat-, and shoulder-tufts have become very long and pronounced, the hairs of the last hanging down the outer si(\e of the fore-limbs. Moreover, the white terminal third of the tail has developed a distinct tuft, not dissimilar in relative size and form to that of a lion's tail. A step still further in advance is taken by the typical Guereza (C. guereza) of Abyssinia and North-east Africa generally. In this handsome monkey the white shoulder-tufts extend backwards to form a long mantle, falling down each side of the body |
