1895.] MYODES LEMMUS. i] 
grounds within almost all the great distriets of the land; and 
such places are wanting only in the flatter regions around Lake 
Mjösen and the Christiania Fjord, in the county of Smaalenene, 
and in the exterior south-western coastal districts. 
4. Resorts and Habits in Normal Years. 
Its home is in the ”birch-” and *willow-region,” and it may 
appear even close up to the snow line. The highest portions of 
the *birch-region” may, with us, be regarded as its true habitat, 
and it may there be found scattered throughout those spots 
where marshy and tussock covered ground, clothed with juniper 
and lichens?, alternates with damper stretehes covered with 
dwarf birch (Betula nana) and all sorts of Carices and Gramineae, 
as well as cloudberry plants (Rubus chamaemorus).? 
In these localities, of which the country possesses enormous 
areas, it appears, on the whole, to be scattered about every- 
where, although apparently in small numbers. It cannot but 
create astonishment that one (in normal years), day after day, 
may wander throughout the mountain plateaux, and even search 
specially for this animal, without meeting with more than å few, 
almost chance individuals, although the same tracts, during pro- 
lific years, may form the central points whence their emigrations 
originate. 
But, excepting during migratory years, they live hidden and 
obseure. This is partly due to their appearing almost exclu- 
sively after the evening twilight has commenced; and partly 
to their keeping chiefly to their burrows, or amongst the tus- 
Chiefly of the species Cladoma rhangiferima, Cetraria islandica, OC. cu- 
cullata and C. niwalis, as well as Cormicularia ochroleuca. 
Furthermore Hieracium alpinum may be regarded as å plant, character- 
istic of its habitat. 
Vid.-Selsk. Forh. 1895. No.3. 2 
