GELADA, the Abyssinian name of a large species of baboon, differing from the members of the genus Papio (see Baboon) by the nostrils being situated some distance above the extremity of the muzzle, and hence made the type of a separate genus, under the name of Theropithecus gelada.
With the exception of the bare chest, which is reddish flesh-colour, the gelada recalls the Arabian baboon (Papio hamadryas), and from this common feature it has been proposed to place the two species in the same genus.
In its lobulation it is singularly like, in many details, that of the baboon (Papio maimon) figured by G.
Together with the drill (q.v.), the mandrill, Papio maimon, constitutes the subgenus Maimon, which is exclusively West African in distribution, and characterized, among other peculiarities, by the extreme shortness of the tail, and the great development of the longitudinal bony swellings, covered during life with naked skin, on the sides of the muzzle.
CHACMA, the Hottentot name of the Cape baboon, Papio porcarius, a species inhabiting the mountains of South Africa as far north as the Zambezi.
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