In March 1872 a second specimen of the Beatrix Antelope was received by the Zoological Society, and fortunately with sufficient information to solve the enigma as to its real _patria_. It was the survivor of a pair of these animals, obtained for the late Mr. Gwyn Jeffreys, F.Z.S., by Col. Pelly, then British Resident at Bushire on the Persian Gulf. In 1878 a third living specimen of this Antelope, a male, was received by the Zoological Society; this was presented by Commander F. M. Burke, of the B.I.S.N.S.S. ‘Arcot,’ by whom it had been obtained at Jeddah in the Red Sea from a friend who had received it as a present from the Shereif of Mecca. It was stated to have been originally captured in the neighbourhood of Tyeff or Tayf, in the Hedjaz Passes, some 150 miles east of the Red Sea. In 1881 two additional specimens of the Beatrix Antelope were presented to the same Society by the late Lord Lilford, and since that date three other examples of the same animal have been received alive by the Zoological Society. These were a pair presented by Col. E. C. Ross, C.S.I., H.B.M. Consul at Bushire, in 1890, and a single female presented by Lt.-Col. Talbot in 1892. The typical specimen of _Oryx beatrix_, as already mentioned, is in the collection of the British Museum, as is also the adult female transmitted to the Zoological Society by Col. Pelly. Besides these, the National Collection possesses a skeleton of a young female obtained on the Persian Gulf by Mr. B. T. ffinch, F.Z.S., and some skins and skulls collected in Muscat by Dr. A. S. G. Jayakar, C.M.Z.S. Specimens of the Beatrix Antelope are, however, excessively rare in European collections, and we are not aware that any of the continental museums have succeeded in obtaining specimens of it. From what has been stated it is evident that the range of the Beatrix Antelope reaches from the shores of the Red Sea across Southern Arabia to Muscat. How far up the coast of the Persian Gulf it extends is uncertain, but the specimens stated by Pennant to have been brought to Ispahan from the Bahrein Islands had probably been obtained from the opposite mainland. Our figure of this Antelope (Plate LXXXII.) was put upon the stone by Mr. Smit from a sketch prepared under Sir Victor Brooke’s directions by Mr. J. Wolf. This was _probably_ taken from the same animal as that figured in the Zoological Society’s ‘Proceedings,’ as above mentioned. _May_, 1899. [Illustration: THE BOOK OF ANTELOPES, PL. LXXXIII. _Wolf del. Smit lith._ _Hanhart imp._ The Gemsbok. ORYX GAZELLA. _Published by R. H. Porter._ ] 115. THE GEMSBOK. ORYX GAZELLA (Linn.). [PLATE LXXXIII.] _Gazella Indica cornibus rectis longissimis nigris_, =Ray=, Quadr. p. 79 (1693). _Capra gazella_, =Linn.= Syst. Nat. (10) i. p. 69 (1758), (12) i. p. 96 (1766); =Müll.= Natursyst. i. p. 412 (1773).