In his ‘Horns and Hoofs,’ Mr. Lydekker casts some doubt as to the real distinctness of _C. maria_ from _C. leucotis_, but on this point we can assure him there is no room for hesitation. No one who examines our beautiful picture of this species (Plate XXXVII.), drawn by Smit from Mr. Wolf’s original sketch, will for a moment deny its perfect distinctness from _Cobus leucotis_ and from every other known species of the group. _August, 1896._ [Illustration: THE BOOK OF ANTELOPES, PL. XXXVIII. _Wolf del., J. Smit lith._ _Hanhart imp._ The White-eared Kob. COBUS LEUCOTIS. _Published by R. H. Porter._] 64. THE WHITE-EARED KOB. COBUS LEUCOTIS (LICHT. ET PET.). [PLATE XXXVIII.] _Antilope leucotis_, =Licht. et Pet.= MB. Ak. Berl. 1853, p. 164; =iid.= Abh. Ak. Berl. 1854, p. 96, pl. iii. (Sobat, Senuaar); =Schweinf.= Im Herzen v. Afr. i. pp. 213, 214, ii. p. 533 (1874) (Bahr-el-Djur); =Huet=, Bull. Soc. Acclim. 1887, p. 38; =Emin=, Reise-brief., pp. 99, 226 (1888); =id.= Transl. pp. 101, 130, 228; =Junker=, Travels in Afr. p. 441 (1891). _Kobus leucotis_, =Gerrard=, Cat. Bones Mamm. B. M. p. 239 (1862); =Gray=, Cat. Rum. B. M. p. 16 (1872); =id.= Hand-l. Rum. B. M. p. 87 (1873). _Hydrotragus leucotis_, =Fitz.= SB. Ak. Wien, lix. 1, p. 175 (1869). _Cervicapra leucotis_, =Baker=, Ismailia, ii. p. 531 (1874) (Shooli country). _Cobus leucotis_, =Ward=, Horn Meas. (1) p. 91 (1892), (2) p. 124 (1896); =Lyd.= Horns and Hoofs, p. 224 (1893). _Adenota lechee_, =Gray=, Ann. Mag. N. H. (3) iv. p. 296 (1859) (Bahr-el-Gazal, _Petherick_) (nec ejusd. Knowsl. Men. 1850). _Adenota leucotis_, =Heugl.= Ant. u. Büff. N.O.-Afr. (N. Act. Leop. xxx. pt. ii.) pp. 12, 13, pl. i. fig. 4 (head), 1863 (Sobat R.). _Adenota kul_ et _A. wuil_, =Heuglin=, op. cit. pp. 12, 13(?). VERNACULAR NAMES:--_Adjel_ of the Denkos; _Kul_ and _Wuil_ of the Djengs (_Heuglin_); _Teel_ of the Shoolis (_Baker_); _Kala_ of the Niam-Niams (_Junker_). Size smaller and form slenderer than in any of the species hitherto described (height at withers about 34–35 inches). General colour dark brownish fawn; a large patch surrounding the eyes and ears, including the whole of the backs of the latter, another on the muzzle, chin, and upper throat, and the whole of the chest and belly pure white, strongly contrasting with the dark colour of the back. Front of legs blackish; a white ring round the pasterns, just above the hoofs. Horns slender and graceful, attaining a length of 19 or 20 inches, though but little more than 6 inches in circumference. _Female_ similar, but without horns. Skull measurements (♀):--Basal length 9·75 inches, greatest breadth 4·15, orbit to muzzle 6·45. _Hab._ Upper Nile, region of the Sobat, Bahr-el-Gazal, and their affluents, extending into the Niam-Niam country.