fi ■ CATALOGUE OF UNGULATES 



skull short (fig. 2) ; ears more or less elongated ; tail long, 

 in wild forms terminally tufted, or more or less liairy 

 throughout its length; a bare callosity, or "chestnut" on 

 the inner side of each fore-leg above the " knee " (carpus). 



Distribution, at the present day, co-extensive with that 

 of the family. 



The genus is divisible into the following siibgeneric 

 groups : — 



A. Head and neck (like body) devoid of stripes. 



a. Ears relative]}' sliort ; hoofs broad Equus. 



h. Ears longer ; hoofs narrower Asimis. 



B. Head and neck (and in most cases the body) marked 



with numerous dark and light stripes, which are 



transverse on the neck (and body). 

 a. Ears very broad and densely haired internally Bolichohvppus. 

 h. Ears narrow and sparsely haired internally Hippofigris. 



1. Subgenus EQUUS. 



Equus, H. Smith, Jardinc's NaturalisVs Lihr., Mamm. vol. xx, 

 p. 192, 1841 ; Pococl; Ann. Mag. Naf. Hist. ser. 7, vol. x, p. 304. 

 1902; Hdlrr, Smithson. Mine. Collect, vol. Ix, no. H, p. 2. 1912. 



I. EQUUS OABALLUS. 



Equus caballus, Linn. Sijst. Nat. ed. 10, vol. i, p. 73, 1758, ed. 12, 

 vol. i, p. 100, 1766; Gri-ffith, Animal Kingdom, vol. iii, p. 341, 

 vol. V, p. 294, 1827; Gray, Cat. Ungulata Brit. Mus. p. 263. 

 1852; Flower and Garson, Cat. Osteol. Mus. B. Coll. Surg. 

 pt. ii, p. 395, 1884 ; Floivcr, The Horse, p. 72, 1891 ; Bidgeivay, 

 Thoroughbred Horse, p. 12, 1905 ; Lydcller, Horse and its 

 Belatives, p. 103, 1912. 



A.— Equus caballus caballus. 



Equus caballus typicus, Lydckker, Proc. Zool. Soc. 1904. p. 432. 

 Horse and its Belatives, p. 176, 1912. 



Including : — 

 Equus ferus, Pallas, Zoogr. Bofsv-Asiat. vol. i, p. 260, 1811. 

 Equus gmelini, Antonius, Natiirwiss. Wochenschrift. ser. 2, vol. xi. 

 p. 516, 1912. 



Typical locality Scandinavia, with the possible exception 

 of the Arab and its derivatives, this race is taken to include 

 all domesticated breeds, together with the half-bred so-called 



