56. KIRK’S DIK-DIK. _M. kirki_ (Günth.). 83 57. GÜNTHER’S DIK-DIK. _M. guentheri_, Thos. [Plate XXXI. fig. 1.] 89 Subfamily IV. CERVICAPEINÆ 93 Genus I. COBUS 95 58. THE COMMON WATERBUCK. _Cobus ellipsiprymnus_ (Ogilby). [Plate XXXII.] 97 59. THE SING-SING. _C. unctuosus_ (Laurill.). [Plate XXXIII.] 105 60. CRAWSHAY’S WATERBUCK. _C. crawshayi_, Scl. [Plate XXXIV.] 109 61. PENRICE’S WATERBUCK. _C. penricei_, Rothsch. [Plate XXXV.] 113 62. THE DEPASSA WATERBUCK. _C. defassa_ (Rüpp.). [Plate XXXVI.] 115 63. MRS. GRAY’S WATERBUCK. _Cobus maria_, Gray. [Plate XXXVII.] 121 64. THE WHITE-EARED KOB. _C. leucotis_ (Licht. et Pet.). [Plate XXXVIII.] 127 65. THOMAS’S KOB. _C. thomasi_, Neumann. [Plate XXXIX.] 131 66. BUFFON’S KOB. _C. kob_ (Erxl.). [Plate XL.] 137 67. THE POKU. _C. vardoni_ (Livingst.). [Plate XLI.] 141 68. THE SENGA KOB. _C. senganus_, sp. n. 145 69. THE LECHEE. _C. lechee_ (Gray). [Plate XLII.] 149 Genus II. CERVICAPRA 155 70. THE REEDBUCK. _Cervicapra arundinum_ (Bodd.). [Plate XLIII.] 157 71. THE BOHOR. _C. bohor_ (Rüpp.). 165 72. THE NAGOR. _C. redunca_ (Pall.). [Plate XLIV.] 171 73. THE ROI RHÉBOK. _C. fulvorufula_ (Afzel.). [Plate XLV.] 175 74. CHANLER’S REEDBUCK. _C. chanleri_, Rothsch. 183 Genus III. PELEA 187 75. THE VAAL RHÉBOK. _Pelea capreolus_ (Bechst.). [Plate XLVI.] 189 LIST OF ILLUSTRATIONS IN THE TEXT. VOL. II. Fig. Page 23. _Ourebia scoparia_, ♂ 17 24. Skull of _Ourebia haggardi_, ♂ 30 25. Skull of _Nesotragus livingstonianus_, ♂ 57 26. Skull of _Nesotragus pygmæus_, ♂ 64 27. Skull of _Madoqua phillipsi_ 77 28. Fore part of skull of _Madoqua damarensis_, side view} 28 _a._ Upper view of snout of _M. damarensis_ } 28 _b._ Lower view of snout of _M. damarensis_ }