76 
SECOND YAKKAND MISSION. 
winter fur; and as Dr. Stoliczka mentions in his diary that he obtained a Lagomys with the 
fur very ragged on the 6th of June at Duha, and as this specimen agrees well with 
Dr. Gunther’s description of the type of L. macrotis, obtained by Captain Biddulph at the 
same spot, I haye no hesitation in concluding that the skin without a label is from Diiha. 
It is the only skin in the whole collection which presents the appearance of having been killed 
when jnst losing its long winter fur. Duha is a camping ground at an elevation of 10,440 
feet on the north side of the Kuenlun, on the road from Yarkand to Yangi Diwan and the 
Karakoram pass via Kugiar. 
Although I felt very doutful about it, I referred this skin to L. auritus until I saw Dr. 
Gunther’s description, which is evidently taken from a specimen in better condition. It 
runs thus: 
Pur very soft and long, especially on the hind part of the back; general hue of the upper parts pale huff 
yellow, whitish on the sides and underneath ; a small white patch behind the ear; feet pure white; chin white ; 
the hairs of the moustaches white, but some of them black. Apparently no glandular patch below the ear. 
Ears very large, well covered with hairs. Soles of the feet covered with short hairs, leaving the pads of the 
toes quite bare. 
, Inches. 
Total length ........... 8 
Length of ear ........... li 
Length of tarsus, including nails . . . . . . . . If 
In the specimen collected by Dr. Stoliczka, the long hair on the hack is leaden-hlack at 
the base and for the greater portion of its length, then dirty white, the ends being buff, and 
a few hairs having black tips. But the new short fur which is growing between the patches 
of the long hair is brownish, precisely as in L. auritus. I am strongly disposed to suspect, 
indeed, that L. auritus is the summer, L. macrotis the winter garb of the same species ; but 
there are one or two differences which require explanation. The feet appear larger in 
Ij. macrotis , and the pads of the toes are black, whilst in L. auritus they are pale coloured: 
in the former the long hair of the forehead is lead black at the base, in the latter pale grey. 
The feet and lower parts generally are white in L . macrotis , huffy white in L. auritus ; hut 
this may he seasonal. 
The skulls are very similar. Erom the imperfect skull extracted from the skin of the 
specimen referred to L. macrotis, I take the following measurements :— 
Total breadth across zygomatic arches 
Metre. 
•03 
Inches. 
0-81 
Length of nasal bones ..... 
•016 
0-63 
Width of do. behind ..... 
•005 
0-3 
Do. do. in front ..... 
•0(55 
0-33 
Do. of frontal bones between orbits 
•005 
0-3 
Longitudinal diameter of orbit .... 
•013 
018 
Transverse diameter of do, .... 
•oi 
0-39 
Length of palatine opening .... 
■013 
0-54 
Antero-posterior diameter of bony palate behind 
opening ....... 
palatine 
•003 
0-07 
Width of palate between last pair of molars 
•009 
0-35 
Length of 5 upper molars taken together . 
•009 
0-35 
Length of lower jaw from angle to symphysis 
■ 
•03 
1-3 
Height of do, . . , , , , 
* 
•017 
Q'7 
