Our illustration of the Blue-buck (Plate LXXVI.) was put upon stone by Mr. Smit many years ago, from a water-colour sketch by Mr. Wolf, which is now before us. This sketch was drawn by Mr. Wolf under Sir Victor Brooke’s directions, probably from the specimen at Paris, which we believe Sir Victor examined more than once, but we regret to say that there is no certainty on this point. It should be mentioned, however, that the elongation of the hairs on the neck shown in the Plate is probably rather exaggerated, as this species, we are told by Sundevall, had only a very short “neck-mane.” _January_, 1899. [ Illustration: THE BOOK OF ANTELOPES, PL. LXXVII. _Wolf del. J. Smit lith._ _Hanhart imp._ The Roan Antelope. HIPPOTRAGUS EQUINUS. _Published by R.H. Porter._ ] [ Illustration: THE BOOK OF ANTELOPES, PL. LXXVIII. _Waterhouse Hawkins del. J. Smit lith._ _Hanhart imp._ The Gambian Roan Antelope, ♀. HIPPOTRAGUS EQUINUS GAMBIANUS _Published by R.H. Porter._ ] 111. THE ROAN ANTELOPE. HIPPOTRAGUS EQUINUS (DESM.). [PLATES LXXVII. & LXXVIIL] Subspecies _a_. H. e. typicus. _Antilope equina_, =Desm.= N. Dict. d’H. N. (1) xxiv. p. 4, & Tabl. p. 32 (1804); =id.= op. cit. (2) ii. p. 204 (1816); =G. Cuv.= R. A. i. p. 263 (1817); =Schinz=, Cuv. Thierr. i. p. 394 (1821); =Desmoul.= Dict. Class, i. p. 446 (1822); =Desm.= Mamm. ii. p. 476 (1822); =Burch.= List Quadr. pres, to B. M. p. 8 (1825) (Orange Free State); =H. Sm.= Griff. An. K. iv. p. 177, v. p. 324 (1827); =Less.= Man. Mamm. p. 387 (1827); =J. B. Fisch.= Syn. Mamm. p. 480 (1829); =Smuts=, En. Mamm. Cap. p. 69 (1832); =Goldf.= in Schreb. Säugeth. iv. p. 1186 (1836); =A. Sm.= Cat. S. Afr. Mus. p. 11 (1837); =Laurill.= Dict. Univ. i. p. 618 (1841); =Wagn.= Schr. Säug. Suppl. iv. p. 482 (1844), v. p. 435 (1855); =Schinz=, Syn. Mamm. ii. p. 441 (1845); =id.= Mou. Antil. p. 37, pl. xlii. (1848). _Aigoceros equinus_, =A. Sm.= S. Afr. Quart. J. ii. p. 185 (1834); =Harris=, Wild Sports S. Afr. p. 379 (1839); =id.= Portraits Wild Anim. S. Afr. p. 92, pl. xviii. (1840); =A. Sm.= Ill. Zool. S. Afr. pl. xxvii. (1840); =Gray=, P. Z. S. 1850, p. 132; =id.= Knowsl. Men. p. 16 (1850); =Bly.= Cat. Mamm. As. Soc. p. 169 (1863); =Fitz.= SB. Wien, lix. pt. 1, p. 177 (1869); =Jent.= Cat. Mamm. Leyd. Mus. (Mus. Pays-Bas, xi.) p. 166 (1892).