R. COLLETT. [No. 11, 



Resort. In Storlidalen in Opdal, where the bottom of the 

 valley is about 600 Meters above the sea, the slopes of the moun- 

 tains are high and end in Ihe snovv-clad peaks of Troldheimen. 

 Several of the specimens found here were caught during the 

 late summer in the little meadows on the upper slopes facing 

 the south, beyond which are open spots covered with birch 

 woods and shrubs. Others lived in open shrubberies of birch 

 mixed with alder, willows and juniper, generally in the neigh- 

 bourhood of a brook. They would run about amongst the 

 old birch roots in which holes, presumably their places of 

 abode, were discovered. 



Moreover, specimens were caught higher up on the mountain 

 slopes, where the birch trees are few and stunted, and give 

 place to debris and shrubs, consisting mainly of willows and 

 dwarf-birch, Empetrum, bilberries (Myrtdllus myrtillus), whortle- 

 berry (Vacc. vitis idaea), and short grass. 



The specimen which lived highest of all, caught, as mentioned 

 above, in September 1909 just below Lyngkampen in Øier 

 district (Gudbrandsdalen), lived on a slope facing the south, 

 amongst dwarf-birch thickets and debris, here and there open 

 grass-spots with Nardus, and with willows and some few 

 stunted birches. 



In Rennebo, the most northern locality, where the elevation 

 was about 440 Meters, there were birches, junipers and some few 

 pines, the ground being covered with common mountain grass. 



The most southern specimen was caught at Vangs-Mjosen 

 in Valders, during the harvesting of a barley field, Sep. 30 th 

 1909. It had its resort under a stack of corn, in company with 

 a field mouse (probably M. agrestis) and a shrew, {Sorex 

 araneus), all of which ran out when the sheaf was lifted from 

 the ground. The field was situated between two tiny streams, 

 only about 100 Meters from the farm buildings, and sloped up 

 towards a clump of birches, in which were several small rocks 

 and some large birch trees. 



In August 1908 three specimens, which were not preserved, 

 were killed at Domaas in Dovre, also in a barley field. A field 



