272 EdTJIB^. 



Dzigethai, Bitfon, Siq^^h vi. p. 37. 



Wild Mule, Half Ass, or Fecund Mule, Penn. Quad. i. 



Wild Ass, Enylish in Thibet. 



Hemionos, Plin. Hist. Nat. viii. c. 44, 



L'Hemione, Ency. Method, t. 42. f. 4. 



The Ghoor or Khur, Moorcroft ; H. Smith, Equidce, p. 310. 



Wilder Esel, Eveismann, iiidl. Mosc. 1840 ; Wagner, Wiegmann, 



Arch. 1842, viii. p. 49. 

 The Kiang, H. Smith, Eqidda>, p. 289. 

 Wild Horse, Gerrard, Asiat. Research, xvii. p. 247. 



Hah. Thibet. ^'^^ ^jZ^i^ha^- 



There is a male between winter and summer fur, from Thibet, 

 presented by Lord Gifford, and a male from Thibet, presented by the 

 Hon. East-India Company, ia the British Museum. 



Var. 1. With a distinct cross band on the shoulder like the Domestic 

 Ass. 



Hah. Thibet {Capt. StracJietj). 



Var. 2. With the vertebral dorsal streak very obscure or entirely 

 wanting. 



Hab. Thibet (Capt. Strachey). 



There are in the British Museum: — a skull from Thibet, pre- 

 sented by B. H. Hodgson, Esq. ; two skulls, lower jaw wanting, 

 presented by B. H. Hodgson, Esq. (the specimens referred to by 

 Mr. Gray in the P. Z. S. 1839) ; and a skull from Thibet, north of 

 Ladack, presented by the Earl of Gifford. 



The forehead of all the three specimens of the skull of E. hemionus 

 from Thibet is rather convex between the eyes, and the centre of 

 the face is narrow and keeled on the sides ; while in the skull of E. 

 onager from Kutch the forehead is flat between the eyes, and the 

 centre line of the face is rather broader and rounded gradually off 

 on the sides, and the incisive bone is longer and more gradually 

 arched, making the incisors more perpendicular in the latter than in 

 any of the former. 



But the most distinctive character between the four skuUs is in 

 the position of the infraorbital foramen. In E. onager it is high 

 up, about one-third the space between the face-liae and the back 

 edge of the teeth ; it is far back, being directly over the front edge 

 of the cheek-ridge and the back end of the thii-d grinder ; while in 

 all the three specimens of the skulls of E. Hang this foramen is 

 lower down, being nearly in the centre of the space between the 

 face-line and the base of the teeth, and it is placed on a line over 

 the back edge of the second grinder, some distance in front of the 

 end of the cheek-ridge. The under surface of the body of the 

 posterior sphenoid is narrow and convex in E. hemionus, and broad 

 and flat in E. kiang. The vomer is much more compressed in the 

 latter than in E. hemionus. I am not certain that the distinctions 

 here described may be sufficient to show that these two animals are 

 separate species ; but they indicate the necessity of the subject being 

 more fully examined. 



