MAMMALIA. 
61 
The following are the dimensions of the skull in the Kium specimen - 
Length of skull from occiput to front of incisors 
Metre. 
0-92 
Inches. 
3-63 
Greatest breadth of skull across posterior portion of 
arches ........ 
zygomatic 
•044 
1-73 
Width between orbits ...... 
- 
•026 
1-02 
Length of nasal hones ...... 
. 
•037 
1-46 
Breadth of do. behind . 
• • 
•017 
0-68 
Do. do. in front ..... 
* • 
•014 
0-55 
Prom base of hinder upper incisor to foremost molar . 
• • 
•027 
1-06 
Length of the row of upper molars taken together at base 
•018 
0-63 
Do. of palate behind anterior palatine openings . 
. 
•007 
0-27 
Breadth of palate between 3rd pair of molars 
• 
•012 
0-5 
Length of lower jaw from angle to symphysis 
. 
•062 
2-46 
Height of do. ...... 
o 
1-59 
The specimen in the collection of the Asiatic Society of Bengal (now in the Indian 
Museum), which was identified by Mr. Blyth with L. pallipes, belongs evidently to the 
same species as the skins collected by Dr. Stoliczka in Ladak. This specimen was, I believe, 
presented by Captain Smyth, who collected in the Western Himalaya and in Western Tibet, 
hut the name of the donor is omitted in Mr. Blyth’s catalogue. 
I was at first disposed to identify this hare with L. pallipes, Hodgson, and I included it 
under this name, though with a mark of doubt, in the list of Dr. Stoliczka’s collections, 
J. A. S. B., 1875, p. 109. After this list was published, however, I received from Mr. 
Mandelli, of Darjiling, specimens of a hare which I have no hesitation in identifying with 
the true L. pallipes, and I found them to differ, both in the skins and skull, from the present 
species. I consequently described the Western Tibetan form as L. hypsibius} 
The differences between the two species are that the fur in L. hypsibius is denser and 
longer on the tarsi, and less woolly on the back; the size is larger, but the ears in proportion 
considerably shorter, and rather differently coloured. The dark band on the anterior portion 
of the ears, and the whitish posterior surface, are more developed in L. pallipes, and the 
inner surface is whiter. The general colouration of L. hypsibius is much more rufous. In 
the skull of L. hypsibius the teeth are larger, the palatal opening narrower behind, the 
forehead less concave, and the posterior portion of the nasals differently shaped. 
L. hypsibius appears to be found throughout a considerable tract in Western Tibet, 
keeping always to considerable elevations, but the relative distribution of this and the other 
Tibetan hares is very imperfectly known. 
There is a bare possibility that this may be the L. oiostolus 2 of Hodgson, described 
from young specimens, and stated by its describer to be found in Ladak 1 2 3 ; but I think it is 
not the same, for young specimens of Lepus pallipes agree much better with Mr. Hodgson’s 
description. The ears of L. oiostolus are said by Waterhouse 4 to be similarly coloured 
with those of L. tibetanus. This is not the case in L. hypsibius . 
1 The name in this case, as in that of ~Mus sublimis, is given on account of the high elevation at which the species is found 
living. 
2 J. A. S. B., ix, 1840, p. 1186. 
3 J. A. S. B., si, 1842, p. 288. 
4 Eodentia, p. 62. 
Q 
