CEPHALOPHIN^: 



65 



specimens grow to 6J inches in length, relatively large, 

 divergent, slender, evenly tapering, and somewhat roughened 

 at hase. Skull relatively slight, slender, and long, with 

 median palatal notch in advance of lateral ones ; basal length 

 10J, maximum width 4-J, interval between muzzle and orbit 

 6 J inches. The range extends from the west coast through the 

 forest-zone to N. E. Khodesia. The characters given by their 

 describers as respectively distinctive of the N. E. Ehodesian 



FIG. 10. FRONT AND SIDE VIEWS OF SKULL AND HORNS OF YELLOW- 

 BACKED DUIKER (Cephaloplius sylvicultrix) . 



C. coxi and the Ituri C. ituriensis do not appear to be even 

 of racial value. If ituriensis were a distinct race it is quite 

 probable that it would be inseparable from thomasi. 



78. 7. 16. 3. Skin, mounted. Fanti. Also skull. 



Purchased, 1878. 



64. 12. 1. 12. Skull, with horns, and skin. Gabun ; 

 collected by Monsieur P. du Chaillu. Type of C. longiceps. 



Purchased, 1864. 



71. 5. 27. 1. Skull, with horns, and skin. Same locality 

 and collector. Type of C. mclanoprymnus. Purchased, 1871. 



55. 12. 26. 161. Skull, with horns, and skin. Sierra 

 Leone. Described and skull figured by Gray, Proc. Zool. 

 Soc., 1871, p. 594. Purchased, 1855. 



II. F 



