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Show 182 DR. J. E. GRAY ON A NEW COLOBUS. [Feb. 27, 7. COLOBUS CRISTATUS, Gray. Crown of the head with short reflexed hair, with two whorls in front, and alow, narrow, central, erect, longitudinal crest. Yellowish brown ; front part of the body, shoulders, and outside of the fore legs greyer; throat, chest, belly, inner side of the limbs, and feet greyish white. West Africa. BM- 8. COLOBUS VERUS, Van Beneden. Crown of the head with short reflexed even hair ; chest with elongated spreading hair. Olive-brown ; hair finely ringed with black ; whiskers whitish ; chin and beneath pale greyish. Mus. Paris. Van Beneden's figure and short description seem to indicate that this species is very like the preceding, but that the head shows no indication of a crest or whorl of hair on the forehead. 9. COLOBUS GUEREZA, Ruppell. Crown-hair short; back with a line of long produced hair forming a kind of mantle ; end of tail tufted. Black ; end kof tail, circumference of face, and mantle white. Abyssinia. B.M. Along with the Colobus there was sent the skin, with the skull and bones of the limbs, of a young specimen of Cercopithecus albogularis, Sykes. It differs from C. samango by being grizzled and yellow-brown-washed, and the base of the tail grizzled and the hinder half pure black. This is also probably from Zanzibar. The Cercopitheci in the British Museum may be thus divided:- a. Nose blue, whiskers yellow. 1. C. cephus, B.M. b. Nose covered with white hairs. 2. C. petaurista, Erxl., B.M. 3. C. melanogenys, Gray, B.M. 4. C. martinii, Waterh., B.M. 5. C. nictitans, Erxl., B.M. 6. C. ludio, Gray, B.M. c. Nose and ears covered with red hairs. 7. C. erythrotis, Waterh., B.M. d. Nose coloured like the body. * Haunches with a white streak. 8. C. diana, Erxl., B.M. 9. C. leucampyx, Martin, B.M. ** Haunches with a white spot. 10. C. mona, Erxl., B.M. II. C. grayii, Fraser. *** Haunches without streak or spot. t Head with a black temple-streak. 12. C.pogonias, Bennett, B.M. 13. C. erxlebenii, Dahlbom, B.M. Var. nigripes, Du Chaillu, B.M. 14. C.pluto, Gray, B.M. 15. C. erythrogaster, Gray, B.M. -ff Head without any black streak. 16. C. campbellii, Waterh., B.M. (C. burnettii, Gray). 17. C. albogularis, Sykes, B.M. 18. C. saimango, Sundevall, B.M. |