OCR Text |
Show 1868.] DR. J. E. GRAY ON A NEW COLOBUS. 181 varieties of that species. The long hair of the head shows its alliance to C. vellerosus. The species of the genus may be thus defined : - 1. C O L O B U S SATANAS, Waterhouse. Crown crested; whiskers elongated, expanded. Black; hairs long and coarse, of crown and sides of face elongated, crisp, forming a wide, high-spreading crest, with the tips recurved forwards. Fernando Po. B.M. 2. COLOBUS POLYCOMUS, Geoffr. Crown of head and sides of face and throat with elongated hairs, forming a mane ; tail-end slightly tufted. Black; forehead, circumference of face, and mane whitish ; tail white. B.M. Var. ursinus, Ogilby. Tail all white ; mane greyish. Fernando Po. B.M. 3. COLOBUS ANGOLENSIS, Sclater, P. Z. S. 1860, p. 245. Crown of head, the sides of face, and throat with elongated hairs, forming a mane; tail-end slightly tufted. Black ; sides of mane and end of tail white. Angola. B.M. 4. COLOBUS BICOLOR, Wesmael. Crown of the head with reflexed hair ; hair of forehead, sides of face, and chin long, expanded. Black, shining, silky; hair of forehead and side of face and chin white; tail white ; haunches grey. West Coast of Africa. B.M. 5. COLOBUS KIRKII. Crown of head with reflexed hair, rather radiating in front of forehead ; circumference of face and chin smooth, baldish. Back and tail red brown; nape, feet, outside of arms, and thighs black; forehead, cheeks, underside and inner side of limbs whitish. Zanzibar. B.M. 6. COLOBUS FERRUGINEUS, Kuhl. Crown of head with reflexed hair, rather radiating in front of the forehead; circumference of face and chin smooth. Blackish grey ; sides of neck, cheek, throat, forehead, legs, and feet red-bay ; nape and base of tail above reddish. Gambia. B.M. Var. 1. rufoniger, Martin. The black and red more intense and bright; tail black, red near the base. B.M. Var. 2. pennantii, Waterhouse. Like rufoniger, but feet and tail blacker ; nape not red. Gambia. B.M. In this species the thumb varies in development; it sometimes has a claw. |