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Show 1871.] DR. J. E. GRAY ON THE BUSH-BUCKS. 595 on the dark-brown hairs; of outside of limbs, and especially of the middle of the back, longer (forming a vertebral crest), scarcely grizzled ; rump with a large oval disk of black hair ; legs dark brown ; ears moderate, hairy. Hab. Gaboon. Nasal bone of Cephalophus melanoprymnus. Female in British Museum. Differs from C. sylvicultrix and C. niger in having the very distinct black patch over the base of the tail, and also in the much greater length and softness of the fur. The fur of C. sylvicultrix is slightly grizzled. 2. CEPHALOPHUS SYLVICULTRIX. (Fig. 4, p. 596.) Cephalophus sylvicultrix, Gray, Cat. Ungul. B. M . p. 83; Knowsley Menag. t. 8. f. 1, t. 23. f. 3. Fur bristly, rather long, blackish brown, grey-grizzled, with a large yellow spot on the hinder part of the back. Hab. West Africa : Sierra Leone. Length of skull of adult male 10-f inches ; height at occiput 2\; width at condyles 4|, at nasals 41, from orbit to end of intermaxillaries 6 inches. 3. CEPHALOPHUS OGILBII, Gray, Cat. Ungul. B. M. p. 83; Knowsley Menag. t. 8. f. 2. Fur rigid, adpressed ; hairs of cheeks and neck very short, of forehead long, pale bay-brown, with a deep-black dorsal streak, paler beneath ; crown and haunches brighter bay. Hab. Fernando Po ; Gaboon. B.M. Two males in the British Museum, one from Fernando Po, the other from the Gaboon. The latter is brighter bay, and has a rather wider dorsal streak. 4. CEPHALOPHUS BADIUS. Cephalophus badius, Gray, Cat. Ungul. B. M . p. 84. Cephalophus dorsalis, Gray, Knowsley Menag. t. 7. f. 1. Cephalophus breviceps, Gray, P. Z. S. 1866, p. 201, t. 2 (junior). |