15. THE SASSABY. _D. lunatus_ (Burch.). [Plate X.] 85 Genus III. CONNOCHÆTES 93 16. THE BRINDLED GNU. _Connochætes taurinus_ (Burch.). [Plate XI.] 95 17. THE WHITE-BEARDED GNU. _C. albojubatus_, Thos. 105 18. THE WHITE-TAILED GNU. _C. gnu_ (Zimm.). [Plate XII.] 111 Subfamily II. CEPHALOPHINÆ 119 Genus I. CEPHALOPHUS 121 19. THE YELLOW-BACKED DUIKER. _Cephalophus sylvicultrix_ (Afz.). [Plates XIII. & XIV. fig. 2.] 125 20. JENTINK’S DUIKER. _C. jentinki_, Thos. [Plate XV.] 131 21. ABBOTT’S DUIKER. _C. spadix_, True 135 22. THE NATAL DUIKER. _C. natalensis_, A. Smith. [Plate XVI.] 139 23. HARVEY’S DUIKER. _C. harveyi_, Thos. [Plate XVII.] 145 24. THE BLACK-FRONTED DUIKER. _C. nigrifrons_, Gray. [Plate XVIII. fig. 1.] 149 25. THE WHITE-BELLIED DUIKER. _C. leucogaster_, Gray 153 26. THE BAT DUIKER. _C. dorsalis_, Gray. [Plate XIX. fig. 2.] 155 27. OGILBY’S DUIKER. _C. ogilbyi_, Waterh. [Plate XVIII. fig. 2.] 161 28. PETERS’S DUIKER. _C. callipygus_, Pet. 165 29. THE RED-FLANKED DUIKER. _C. rufilatus_, Gray. [Plate XIX. fig. 1.] 167 30. THE BANDED DUIKER. _C. doriæ_ (Ogilb.). [Plate XX.] 171 31. THE BLACK DUIKER. _C. niger_, Gray. [Plate XIV. fig. 1. 175 32. MAXWELL’S DUIKER. _C. maxwelli_, H. Sm. [Plate XXI. fig. 2.] 179 33. THE BLACK-RUMPED DUIKER. _C. melanorheus_, Gray 185 34. THE UGANDA DUIKER. _C. æquatorialis_, Matsch. 189 35. THE BLUE DUIKER. _C. monticola_ (Thunb.). [Plate XXI. fig. 1.] 191 36. THE CROWNED DUIKER. _C. coronatus_, Gray. [Plate XXII. fig. 2.] 195 37. THE ABYSSINIAN DUIKER. _C. abyssinicus_, Thos. [Plate XXII. fig. 1.] 199 38. THE COMMON DUIKER. _C. grimmi_ (Linn.). [Plate XXIII.] 203 Genus II. TETRACEROS 213 39. THE FOUR-HORNED ANTELOPE. _Tetraceros quadricornis_ (Blainv.). [Plate XXIV.] 215 VOL. II. Subfamily III. NEOTRAGINÆ 1