Skull with its muzzle unusually well ossified, so that there are no anteorbital vacuities, nor extra vacuities in the maxillo-premaxillary suture. Anteorbital fossæ very large. Nasal opening a vertical oblong, its sides not bowed outwards. Horns excessively small, their length less than the diameter of the orbit; laid right back on the sides of the crown in the direction of the facial profile. _Distribution._ West Africa. Only one species of this genus is known. [Illustration: THE BOOK OF ANTELOPES, PL. XXIX. _Wolf del. Smit lith._ _Hanhart imp._ The Royal Antelope. NEOTRAGUS PYGMÆUS. _Published by R·H·Porter._] 51. THE ROYAL ANTELOPE. NEOTRAGUS PYGMÆUS (LINN.). [PLATE XXIX.] _Cervus pusillus guineensis_, =Seba=, Thesaurus, i. p. 10, pl. xliii. fig. 3 (1734). _Capra pygmæa_, =Linn.= Syst. Nat. (10) i. p. 69 (1758). _Moschus pygmæus_, =Linn.= Syst. Nat. (12) i. p. 92 (1766). _Antilope pygmæa_, =Pall.= Spic. Zool. xii. p. 18 (1777); =Zimm.= Spec. Zool. geogr. p. 540 (1777); =id.= Geogr. Gesch. ii. p. 112 (1780); =Herm.= Tabl. Affin. Anim. p. 107 (1783); =Gmel.= Linn. S. N. i. p. 191 (1788); =Kerr=, Linn. An. K. p. 318 (1792); =Donnd.= Zool. Beytr. i. p. 642 (1792); =Link=, Beytr. Nat. ii. p. 99 (1795); =Bechst.= Allgem. Uebers. vierf. Thiere, ii. p. 642 (1800); =Shaw=, Gen. Zool. ii. pt. 2, p. 326 (1801); =Desm.= N. Dict. d’H. N. (1) x. p. 251 (1803), xxiv. Tabl. p. 32 (1804); =G. Cuv.= Dict. Sci. Nat. ii. p. 241 (1804); =G. Fisch.= Zoogn. iii. p. 414 (1814); =Afzel.= N. Act. Ups. vii. p. 220 (1815); =Desm.= N. Dict. d’H. N. (2) ii. p. 192 (1816); =Goldf.= Schr. Säug. v. p. 1237 (1818); =Desm.= Mamm. ii. p. 465 (1822); =Desmoul.= Dict. Class. i. p. 445 (1822); =Less.= Man. Mamm. p. 379 (1827); =J. B. Fisch.= Syn. Mamm. p. 469 (1829); =Oken=, Allg. Naturg. vii. p. 1360 (1838). _Tragulus pygmæus_, =Bodd.= Elench. Anim. p. 131 (1785); =Ogilb.= P. Z. S. 1836, p. 138. _Antilope_ (_Gazella_) _pygmæa_, =Licht.= Mag. nat. Freund. vi. p. 178 (1814). _Cerophorus_ (_Cervicapra_) _pygmæa_, =Blainv.= Bull. Soc. Philom. 1816, p. 75. _Cemas pygmæa_, =Oken=, Lehrb. Naturg. iii. Zool. ii. p. 744 (1816). _Antilope_ (_Neotragus_) _pygmæa_, =H. Sm.= Griff. An. K. iv. p. 270, v. p. 349 (1827). _Neotragus pygmæa_, =A. Sm.= S. Afr. Quart. J. ii. p. 218 (1834). _Cephalophorus_ (?) _pygmæus_, =Gray=, List Mamm. B. M. p. 163 (1843). _Nanotragus pygmæus_, =Gray=, Ann. Mag. N. H. (1) xviii. p. 231 (1846); =Brooke=, P. Z. S. 1872, p. 640, pl. liii. (animal), fig. skull; =Flow. & Lyd.= Mamm. p. 339 (1891); =Lyd.= Horns and Hoofs, p. 216 (1893). _Cephalophus (Nanotragus) pygmæus_, =Gerv.= H. N. Mamm. ii. p. 209 (1855).