428 MR. O. THOMAS ON THE ANTELOPES [May 17, 



about equal to the distance between the anterior canthus and the 

 rhinarium. Colour grizzled yellowish grey, with rufous face, brown 

 nasal mark, and brown feet, just as in the grizzled varieties of 

 G. grimmii, of which it is obviously the Abyssinian representative. 



Horns ( c? ) set up at an angle above the line of the nasal profile, 

 but not so markedly as in C. grimmii. 74 mm. long, evenly tapering, 

 their basal diameter going nearly 5 times in their length. 



Skull, besides being actually smaller, shorter and broader in pro- 

 portion than in C. grimmii. Distance between orbit and gnathion 

 only just about equal to the zygomatic breadth. Anteorbital fossae 

 of medium depth, defined above by a well-marked ridge, their bottoms 

 about 14 mm. apart. Mesial notch of palate about 9 mm. in 

 advance of the lateral ones. 



Dimensions. — <S • Height at withers 455 ; ear 90 ; hind foot 220. 



Skull — basal length 131 ; greatest breadth 73"5; anterior rim of 

 orbit to gnathion 74; nasals, length 51, breadth 30; muzzle 45 ; 

 upper molar series 46" 5. 



Hab. Abyssinia (Brit. Mus.), 



This species is no doubt the Antilope madoqua of RiippelP, but 

 not the earlier described A. madoka of Hamilton Smith ^ which is 

 Salt's Antelope {Nanotragus saltianus, Blainv.). Both names are 

 founded on the native name Madoqua or Madoka assigned by 

 difi^erent authors to one or other of the two species, and probably 

 used indiscriminately for either. 



Hamilton Smith's name being happily antedated by De Blainville's 

 "■A. saltiana,'' and Riippell's incapable of adoption, as having been 

 used before, we are fortunately able to rescue both these beautiful 

 little species from the clutches of this barbarous and doubtful 

 native name. 



18. Cephalolophus grimmii, L. 



Gapra sylvestris africana, Grrimm, Misc. Cur. Ac. Nat. Cur. 

 Decas ii., Ann. iv. 1685, p. 131 (1686). 



Gapra grimmia, Linn, Syst. Nat. (10) i. p. 70 (1758), 

 ex Grrimm. 



Antilope nictitans, Thunb. Mem. Ac. Petersb. iii. p. 312 (1811). 



Antilope (Gervicapra) mergens, Desm. N. Diet. d'H. N. ii. p. 193 

 (1816). 



Antilope (Gephalophus) platous, burchellii, and jofoo,r, Ham. Sm., 

 Griff. Cuv. An. K. iv. pp. 260-265 (1827). 



Gephalophus campbellice, Grav, Ann. Mag. N. H. (1) xviii. 

 p. 164 (1846). 



Antilope ocularis and albi/rons, Peters, Saug. Mossamb. pj). 184 

 & 186, pis. xxxvii.-sxxix., pi, xli. fig. 1, pi. xlii. fig. 1 (animal and 

 skull) (1852). 



Grimmia splendidula and irrorata, Grray, P. Z. S. 1871, p. 590. 



Size medium ; form much more delicate and slender than in any 



1 N. Wirb. Abyss., Saug. p. 22, pi. vii. fig. 2 (animal) (1835). 

 ■' Griff. Cuv. An. K. iv. p. 271 (1827). 



