The Saiga is represented in the British Museum by a mounted pair from Sarepta on the Volga, and by other skins and skeletons from the same locality. There are also some horns obtained by Dr. O. Finsch on the steppe near Saisan, on the Russo-Chinese frontier, in 1876 (see Finsch, ‘Reise nach West-Sibirien im Jahre 1876,’ p. 193). Our figure of the Saiga (Plate XLIX.) has been put upon the stone by Mr. Smit from a black-and-white sketch prepared by Mr. Wolf for the late Sir Victor Brooke. The original sketch, which belongs to Sir Douglas Brooke, has been kindly lent to us for examination. We regret to say, however, that we have no particulars as to the individual from which Mr. Wolf’s drawing was taken. _August,_ 1897. GENUS IV. PANTHOLOPS. Type. _Pantholops_, =Hodgs.= P. Z. S. 1834, p. 81 P. HODGSONI. _Kemas_, =Gray=, List Mamm. B. M. p. 157 (1843) P. HODGSONI. Size medium. Nose less bent downwards than in _Saiga_, but more swollen laterally, at least in the male. No suborbital glands. Tail short. Mammæ 2. Large glands in feet and groin. Skull without distinct pits between the eyes, or lachrymal vacuities, or anteorbital fossæ. Nasal opening ample, but not so large as that of _Saiga_. Horns long, erect, compressed, slightly diverging, nearly straight below, evenly curving forwards above; ringed in front. Female hornless. _Range of Genus._ Plateau of Tibet. One species only. [Illustration: THE BOOK OF ANTELOPES, PL. L. _Wolf del, J. Smit lith._ _Hanhart imp._ The Chiru. PANTHOLOPS HODGSONI. _Published by R. H Porter_] 80. THE CHIRU. PANTHOLOPS HODGSONI (ABEL). [PLATE L.] _Antilope hodgsoni_, =Abel=, Calc. Gov. Gazette, _cf._ Phil. Mag. lxviii. p. 234 (1826); Edin. Journ. Sc. vii. p. 164 (1827); ‘=Editor=,’ Glean, in Sc. i. p. 144 (1829); =J. B. Fisch.= Syn. Mamm. p. 462 (1829); =Hodgs.= Gleanings in Sci. ii. p. 348, pls. iii., v. (1830); =id.= P. Z. S. 1831, p. 52, 1832, p. 14, 1833, p. 110; =Laurill.= Dict. Univ. d’H. N. i. p. 617 (1839); =Gerv.= Dict. Sci. Nat. i. p. 264 (1840); =Wagn.= Schr. Säug. Supp. iv. p. 420 (1844), v. p. 402 (1855); =Schinz=, Syn. Mamm. ii. p. 415 (1845); =Sund.= Pecora, K. Vet.-Ak. Handl. 1845, p. 270 (1847); =id.= Hornschuch’s Transl., Arch. Skand. Beitr. ii. p. 266; Reprint, p. 86 (1848); =Gieb.= Säug. p. 314 (1853); =Hooker=, Himalayan Journal, ii. pp. 132 & 158 (1854); =Przewalski=, Mongolia (Russian ed.), ii. pl. iii. ♂, pl. iv. fig. 2 ♀; Morgan’s Transl. ii. pp. 204 & 223 (1876).