In the British Museum there is an adult mounted female specimen of the Beisa Antelope, from the Red Sea coast, obtained in 1871. There is also the skull of an adult from the River Juba, obtained by Sir John Kirk and presented by him in 1879, besides other skins and skulls from various parts of Somaliland presented by Mr. W. F. Sinclair, Col. A. Paget, and Capt. Swayne. Our figure of this species (Plate LXXXIV.) was lithographed by Mr. Smit for Sir Victor Brooke many years ago, and was taken, it is believed, from a specimen in the British Museum. _May_, 1899. [Illustration: THE BOOK OF ANTELOPES, PL. LXXXV. _Smit del. et lith._ _Hanhart imp._ The Tufted Beisa. ORYX CALLOTIS. _Published by R. H. Porter._ ] 117. THE TUFTED BEISA. ORYX CALLOTIS, Thomas. [PLATE LXXXV.] _Oryx beisa_, =Hunter=, in Willoughby’s E. Africa, p. 289 (1889). _Oryx callotis_, =Thomas=, P. Z. S. 1892, p. 195, pl. xiv. (head); =Ward=, Horn Meas. (1) p. 149 (1892), (2) p. 189 (1896); =True=, Proc. U.S. Nat. Mus. xv. p. 470, pl. lxxxvi. (1892) (full figure); =Lyd.= Horns and Hoofs, p. 248 (1893); =Lugard=, E. Afr. i. p. 534 (1893); =Matsch.= SB. nat. Fr. Berl. 1893, p. 103; =Jackson=, in Badm. Big Game Shooting, i. p. 293 (1894); =Matsch.= Säug. Deutsch-Ost-Afr. p. 135 (1895); =Pousargues=, Ann. Sci. Nat. (7) iv. p. 131 (1896); =Jackson=, P. Z. S. 1897, p. 454; =Trouessart=, Cat. Mamm. fasc. iv. p. 954 (1898). Vernacular Names:—_Cheroa_ of the Swahilis in Brit. E. Africa (_Jackson_); _Kiroha_, Swahilis of German East Africa (_Stuhlmann_); _Muhambura_ in Kirongi (_Stuhlmann_); _Palla-Palla_ or _Kolongo_ in Uniamuesi (_Matschie_). Of the same size and general characters as the preceding species, to which it is very closely allied. The colour seems to be usually of a richer ruddier tint, and the black stripe on the face that passes from the eye towards the corner of the mouth is generally, but not always; continued downwards on to the lower edge of the jaw, thence backwards, bounding the inter-ramal area on each side and uniting with the lower end of the stripe that runs from below the base of the ear to the throat. In some cases, however, the stripe in question stops short behind the corner of the mouth as in _O. beisa_. The frontal patch and the nose-patch are sometimes entirely separated, sometimes joined by a narrow stripe as in _O. beisa_. The stripes on the body and fore legs resemble those of _O. beisa_, but there is no black patch upon the front of the cannon-bone on the fore leg, such as is present in that species.