( 586 ) 



rnfons chestnut, sometimes with a tinge of greyish fawn on the neck, and tending 

 to sand}' on the rnmp and legs ; mnzzle, inside of ear, side of neck, throat, chest, 

 nnder-parts, inner side of legs, and a streak on the hinder border of the thigh, 

 ]inre wliite, sharply defined from the rnfons and fawn areas. In some instances 

 the light area of the nnder-parts rnns behind the shoulder so as to partly insulate 

 the rufous of the latter. Colour of winter coat not markedly different from the 

 summer one. 



The skull of the female, which measures eighteen inches in basal length, is 

 characterised (a*", all events generally) by the presence of a small but deep depression 

 in the lower part of the forehead at the junction of the frontal with the nasal bones, 

 just below the line of the eyes ; and likewise by the intrusion of the frontals into 

 the base of the nasals in the form of a pear-shaped projection, with the point 

 directed forwards. In an old male skull presented to the British Museum by 

 Brian Hodgson the frontal depression is absent, although present in two female 

 skulls of nearly the same age, as it is in others of apparently the same sex. The 

 first upper premolar, or " wolf-tooth," is very generally present. 



Tlie following dimensions are taken from the mounted specimens of the 

 kiang and the Somali wild ass in the British Museum : — 



The two animals being of practically the same height, the great proportionate 

 width of the hoofs in the kiang is well displayed. In the ghor-khar they are of 

 the narrow type of E. asinics ; the width of the front hoofs in a specimen standing 

 ;5 ft. 10 in. being 2h in. 



B. THE CHIGETAl. 



Equus hemionus hemionus. 



Equus hemionus Lydekker, Proc. Zool. Soc. Loml. 1904, i. p. i'ii, pi. xxvii. 



Hah. Mongolia and Turkestan; chigetai of the Mongols, kulan of the Tatars 

 and Kirghiz. 



In its make and actions — especially of starting when alarmed with the head 

 so elevated that the plane of the face is almost horizontal — as well as in the 

 general type of coloration, this wild ass agrees essentially with the kiang of 

 Ladak and Tibet. Both in the winter and summer coat it lacks, however, the 

 distinctly rufous-chestnut tint so characteristic of the latter, while it is further 

 characterised by the much less marked contrast between the light and dark areas 

 of the coat ; the light areas on the muzzle, buttocks, legs, nnder-parts, etc., being 

 " Isabella-coloured" instead of pure white, and thus much less sharply differentiated 

 from the fawn of the rest of the body. The light areas on the neck and slionlder 

 are also much smaller. The general colour is pale sandy fawn, with the tips of 

 the ears, mane, dorsal stripe (which is continued down the tail) brown ; and there 



