1894.] ME. O. THOMAS ON GAZELLES EROM ALGERIA. 469 



and a half the basal length, while in an equally aged G. cuvieri 

 they are nearly twice that length ; they are, however, very thick 

 and strong. As to direction, they are rather far apart basally, and 

 diverge evenly but slightly upwards ; for their basal two-thirds 

 they curve backwards, but so far less than in other species that 

 their hinder profile is scarcely concave ; their tips bend again 

 equally slightly upwards. Of rings they have only about 10, 

 strongly developed in front, but obsolete postero-externally. 



Measurements of the type, a flat skin, probably somewhat 

 stretched : — 



Head and body (c.) 1400 mm. ; tail without hairs 160, with hairs 

 220 ; ear from notch 132 ; fore hoof, length 54 ; hind hoof 54.j 



(Skull, see p. 472.) 



Ilab. Doubtful. Type bought at Algiers. 



In describing this very handsome Gazelle as new the first point 

 to be considered is its distinctness from G. rujifrons, Gray, the 

 Senegal Gazelle, of which the tj^pical specimens are in the British 

 Museum. These specimens are two, male and female ; but the 

 male is unfortunately far younger than the type of G. riifina, so 

 that the great difference in size between the two species has had 

 to be discounted in the case of one co-type by considerations of 

 age, and in the other of sex. But a careful comparison of a set of 

 other Gazelles, including G. granti, sosmmerriugi, bennetti, and 

 muscatensis, has shown (1) that size does not greatly increase, 

 however much the horns may elougate, after m 6 is up; and (2) 

 that the sexes, widely different as the horns are, do not differ in 

 bulk to anything approaching the extent by which the type of 

 G. riifina exceeds the female co-type of rujifrons. 



The two species, though undoubtedly closely allied, are there- 

 fore evidently separable on account of their difference in size* 



Secondly, the question of Gazella corinna l , Pall., has to be con- 

 sidered. This name was based on Buffon's " La Corine," described 

 from a specimen which lived in the menagerie of the Duke of 

 Orleans, and of the locality of which no mention is made 2 . 



Although the figure given of this animal shows undoubtedly 

 much resemblance to G. riifina, the measurements, both those of 

 the body and those of the skeleton 3 , are absolutely incompatible 

 with it, Buffon's animal, whatever it was, having been if anything 

 smaller than G. rujifrons, from which, as already noted, G. rujina 

 is distinguished by its considerably greater size. The true deter- 

 mination of the Corine is, and perhaps must always remain, im- 

 possible of solution, as Buffon's own statement that, in common 



1 La Corine, Buff. H. N. xii. p. 261, pi. xsvii. (animal £) (1764). Antilope 

 corinna, Pall. Misc. Zool. p. 7 (1766). 



2 BufiWs reference to the Corine of a horn brought from Senegal by 

 Adanson must not be mistaken for a statement as to the locality of the living 

 typo specimen. 



J An unfortunate misprint in the headline of Buffon's page 265 lias given 

 rise to some misapprehension as to the pertinence of the long table of mea- 

 surements there given. Instead of " tin ivevel " the line should run " do la 

 Corine," as is clearly shown by the text of the preceding page. 



Pkoc. Zool. Soc— 1894, No. XXXI. 31 



