_b1._ Horns present in both sexes, inserted farther behind the eye and directed straight backwards in the plane of the face. 5. Taurotragus. Genus I. BOSELAPHUS. Type. _Boselaphus_, =Blainv.= Bull. Soc. Philom. p. 75 (1816) B. tragocamelus. _Portax_, =H. Smith=, Griff. An. Kingdom, v. p. 366 (1827) B. tragocamelus. _Tragelaphus_, =Ogilby=, P. Z. S. 1836, p. 138 B. tragocamelus. Of large size and somewhat heavy build, with the withers considerably higher than the hind-quarters. Muzzle large and naked. Ears small. Tail reaching the hocks, tufted at the end, more or less fringed at the sides. Skull very flat above, the parietals nearly in the same plane as the frontals; occipital ridge strong. Molars with long crowns; those of the upper jaw with accessory column. Horns present only in male, short, shorter than length of face, broad and triangular in section at the base, with strong anterior basal ridge; base of horn inclined obliquely backwards, transversely ridged, distal extremity nearly vertical, lightly curved, smooth, and tapering. _Range of Genus._ Restricted to the Peninsula of India. One species only. [Illustration: THE BOOK OF ANTELOPES, PL. LXXXVII. _J. Smit del. et lith._ _Hanhart imp._ The Nilgai. BOSELAPHUS TRAGOCAMELUS. _Published by R. H. Porter._ ] 110. THE NILGAI. BOSELAPHUS TRAGOCAMELUS (Pallas). [PLATE LXXXVII.] _Antilope tragocamelus_, =Pallas=, Misc. Zool. p. 5 (1766); =id.= Spic. Zool. i. p. 9 (1767), xii. p. 13 (1777); =Erxl.= Syst. R. A. p. 279 (1777); =Zimm.= Spec. Zool. Geogr. p. 540 (1777); =Gatterer=, Brev. Zool. pt. i. p. 80 (1780); =Schreb.= Säug. pl. cclxii. (1784); =Bodd.= Elench. Anim. p. 140 (1785); =Gm.= Linn. S. N. i. p. 184 (1788); =Kerr=, Linn. An. K. p. 308 (1792); =Donnd.= Zool. Beytr. i. p. 625 (1792); =Forst.= Zool. Ind. p. 39 (1795); =Lath. & Dav.= Faun. Ind. p. 4 (1795); =Link=, Beytr. Nat. p. 99 (1795); =Bechst.= Syst. Uebers. vierf. Th. ii. p. 77 (1799); =Shaw=, Gen. Zool. pt. ii. p. 329, fig. 190, lower fig. (1801); =Turt.= Linn. Syst. Nat. i. p. 112 (1802); =Tiedem.= Zool. i. p. 409 (1808); =G. Fisch.= Zoogn. iii. p. 412 (1814); =Afz.= N. Act. Upsal. vii. p. 220 (1815); =G. Cuv.= R. A. i. p. 264 (1817); =Schinz=, Cuv. Thierr. i. p. 396 (1821); =G. Cuv.= H. N. Mamm. iii. pl. xlvi. (1824); =Masson=, Cuv. R. A. p. 318 (1836). _Antilope (Bubalis) tragocamelus_, =Licht.= Mag. nat. Freund, vi. p. 164 (1814). _Cemas tragocamelus_, =Oken=, Lehrb. Nat. iii., Zool. p. 729 (1816).