ANTILOPIN.E 75 



2. 11. 40. 80. Skull, with horns, and skin, female. 

 Koshbi, Tripoli ; same collector. Same history. 



5. 9. 1. 13. Skull, imperfect, with horns, and skin. 

 Rio de Oro, Western Sahara ; collected by Herr Riggenbach. 

 Presented ly the Hon. Walter Rothschild, 1905. 

 7. 7. 8. 200, 209. Two skulls, with horns, and skin. 

 Yo, Lake Chad ; collected by the Alexander-Gosling Expedi- 

 tion. One specimen represents an immature animal. 



Presented ly the Alexander- Gosling Expedition, 1907. 



9. 7. 3. 1. Skull, with horns, and head-skin. Forty miles 

 W. of Duevin, Kordofan. Presented ly Lord Villiers, 1909. 



The following specimen represents a gazelle with longer 

 limbs and less curved horns than the typical dorcas. 



10. 1. 26. 1. Skin, mounted. Between Biskra and 

 Constantine. Presented ly M. V. Hay, Esq., 1910. 



B. Gazella doreas Isabella. 



Gazella Isabella, Gray, Ann. Mag. Nat. Hist. ser. 1, vol. xviii, pp. 214 

 and 231, 1846, Knowsley Menagerie, p. 4, 1850, Proc. Zool. Soc. 

 1850, p. 113, Cat. Ungulata Brit. Mus. p. 52, 1852, Cat. 

 Ruminants Brit. Mus. p. 38, 1872, Hand-List Ruminants Brit. 

 Mus. p. 107, 1873; Gerrard, Cat. Bones Mamm. Brit. Mus. 

 p. 233, 1862; Fitzinger, Sitzber. ~k. Ak. Wiss. Wien, vol. lix, 

 pt. 1, p. 591, 1869; Brooke, Proc. Zool. Soc. 1873, p. 539 ; Huet, 

 Bull. Soc. Acclim. ser. 4, vol. iv, p. 65, 1887 ; W. L. Sclater, 

 Cat. Mamm. Ind. Mus. pfc. ii, p. 157, 1891 ; Ward, Records of 

 Big Game, p. 116, 1892, ed. 6, p. 260, 1910 ; Sclater and Thomas, 

 Boole of Antelopes, vol. iii, p. 151, pi. Ixiv, 1898; LydeJcJcer, 

 Great and Small Game of Africa, p. 344, 1899, Game Animals 

 of Africa, p. 255, 1908; Pousargues, Bull. Mus. Paris, 1901, 

 p. 341 ; Anderson and de Winton, Zool. Egypt, Mamm. p. 347, 

 1902. 



Antilope isidis, Sundevall, K. Svenska Vet.-AJc. Handl. 1845, p. 267, 



1847. 



Gazella dorcas, Blanford, Zool. Abyssinia, p. 261, pi. i, figs. 1, 1 , 

 1870, nee Ogilby. 



Gazella isabellina, LydehJcer, Horns and Hoofs, p. 232, 1893. 



Gazella dorcas Isabella, Blaine, Ann. Mag. Nat. Hist. ser. 8, vol. xi, 

 p. 294, 1913 ; Ward's Records of Big Game, ed. 7, p. 252, 1914. 



Typical (and only) locality Abyssinia. 



The Abyssinian form of the dorcas, characterised by its 

 relatively large size (25 inches at shoulder), the less distinctly 

 lyrate, but very variable, horns, the tendency to brownish 

 in the general colour, and the (usually) less distinct flank- 



