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Show 202 DR. J. E. GRAY ON TWO NEW MAMMALS. [Apr. 10, Notice of an Ape (Macacus inornatus) and a Bushbock (Cephalophus breviceps) in the Gardens of the Society. By Dr. J O H N E D W A R D G R A Y , F.R.S., V.P.Z.S., F.L.S. (Plates XIX., XX.) When I was at the Gardens the other day I observed an Ape and a Bushbock that I had not before seen, I have therefore sent a short note on them that they may be inserted in the Systematic Catalogue. The Ape is a species of Macacus, which was purchased of the wife of a sailor, who had brought it from Borneo; so we may conclude that it is probably a native of that country. It differs from all the other species of this genus in the dark uniform colour of the fur, the very short rudimentary tail, and the large naked space that surrounds the callosities on the buttocks. This naked part is bright red in the living animal, and is shown when the animal sits on its haunches. The naked space is divided above into two parts by a narrow streak of fur that commences from the back and is continued to the base of the tail. The animal is so peculiar that it may be formed into a section of the genus under the name of Gymnopyga. MACACUS INORNATUS. (PI. XIX.) The tail rudimentary, scarcely to be distinguished. Buttocks callous, surrounded by a large naked red space, which is interrupted above by a narrow hairy streak to the base of the tail. Face and ears naked, black ; nose flat. Head covered with hair regularly directed backwards; the hair of the hinder part of the head rather elongate, not forming any crest. Fur blackish brown, nearly uniform. Hair soft, one-coloured; forehead, frontal band, and hands black; the hinder part of the thigh greyish white. Hab. Borneo? A female, not full-grown. This species is distinct from Macacus arctoides of Isidore Geoffroy, as that species has a red face, and comes from Cochin China. It agrees in some respects with the description of Macacus maurus of M. F. Cuvier ; but M. Isidore Geoffroy (Cat. Mamm. p. 31) observes that M . F. Cuvier's figure is only derived from a drawing, and is a very doubtful species. The Bushbock was obtained from the west coast of Africa. It belongs to the section of the genus which have short, nearly erect, horns situated on the hinder part of the forehead. It is peculiar for the short broad form of the head. The cheek-groove is well deve-loped. The animal is not full-grown, and the usual frontal tuft is scarcely developed. CEPHALOPHUS BREVICEPS. (PI. XX.) The head short, broad, thick; the horns short, thick, conical, |
