1846.] Description of a new species of Tibetan Antelope. 341 



notable manner, though the disc itself be vaguely defined. Such is the 

 summer garb. In winter the dark hues are much paler ; the back and 

 flanks being slaty-blue internally, but canescent-fawn on the surface. 

 The female of this splendid species is worthy of her mate, being little 

 inferior to him in size, and provided with a fine pair of horns. I possess 

 two good specimens respectively, of eight and nine years old ; and, as a 

 very slight degree of tension applied to the skin of the larger, (which is 

 not distended in the curing) gives five and a half feet for the length, and 

 three feet for the height of the animal, I apprehend that the male can- 

 not be less than six full feet long, and three and a half high, and conse- 

 quently, that six and five and a half feet, and three and a half and three 

 feet, may be safely assigned as the respective sizes of the sexes in length and 

 height. These females were killed, like the male, in summer,* and they 

 resemble him in colour and aspect so closely, that it becomes only neces- 

 sary to add to the subjoined details of dimensions a notice of the female 

 horns. The horns, then, have the same characteristics as those of the male, 

 but softened and exhibited on a smaller scale. They are, in fact, about half 

 the size of the male's horns, but being less curved, they make a greater 

 longitudinal show in proportion to the size than his. Their thickness, 

 like their length, is about half that of the male's horns. They are very 

 much smoother, and by their diminished thickness, they are separated 

 at the bases. Their flat frontal aspect is not extended far up, owing 

 to the greater compression of the horns ; but that aspect, being pre- 

 sented directly forwards, as in the male, is very palpable towards the 

 base of the horns, which ascend with a sickle-like bend upwards and 

 outwards, greatly divergent, but not describing more than a half of the 

 concentric or circular curve. Thus their points are bent down with 

 yet a faint indication of the second retroversion, so that there is a slight 

 obliquity outwards of the blunt downward tips. The suborbital and 

 interdigital sinuses are very distinct in these females, but the caudal disc 

 less so than in the male. Their tails are very short, and the chaffron of 

 the females is perfectly straight, from the setting on of the horns to the 

 nose. The teats are two. 



The following are the detailed dimensions of both sexes : — 



Male. Female. 



LeDgth from nose to anus, 5 8 5 4 



Height at shoulder, 3 2 2 10^ 



Head to occiput 15 12 



Head to base of horns, 10 Oil 



* One of the females still retains enough of the winter garb to show that the winter 

 colour of the species is slaty-blue, overlaid on the surface with fawn, or pure fulvous. 

 In the summer garb the dark or black-brown of the upper-parts is extended very low 

 on the flanks, behind the elbows ; and the dark list down the limbs is very palpable, 

 though much mixed with hoary. 



