326 LAGOMYS PRINCEPS NOT A NEST-MAKER. 
not a trace of nest could I see, nor any evidence 
of an attempt to make one. I soon after returned 
agvain by the same trail. The snow having now 
fallen to the depth of about six inches, completely 
covering up the rocks and stones, all the animals 
had disappeared; and although I searched most 
carefully, there was not a hole or track in the 
snow, to show they had ever left their quarters 
to feed or wander about. 
As it was quite impossible a nest could have 
been made in the interim, it is perfectly certain 
they hybernate in holes without a nest; whereas 
Lagomys minimus, living at a much greater alti- 
tude, makes a nest to sleep through the winter. 
Lagomys minimus (Lord, sp. nov.).—Sp. 
Cuanr.: Differs from Lepus (Lagomys) princeps of 
Sir J. Richardson (F.B.A., vol. i. p. 227, pl. 19) 
in being much smaller. Predominant colour of 
back dark-grey, tinged faintly with umber-yellow, 
—more vivid about the shoulders, but gradually 
shading off on the sides and belly to dirty-white ; 
feet white, washed over with yellowish-brown ; 
ears large, black inside, the outer rounded margin 
edged with white ; eye very small, and intensely 
black ; whiskers long, and composed of about an 
equal number of white and black hairs. 
Measurement: Head and body, 64 inches; head, 
