130 University of California Publications in Zoology. [Vol. 7 



scarce. On Kiipreanof Island no runways were seen, and the 

 few specimens secured were taken in the grass just above the 

 high tide mark. At Kuiu Island there were a few small colonies 

 on some little islands in the bay, but almost none elsewhere. The 

 same was true at Port Protection, where most of those secured 

 were taken on a little rocky knob, an island at high tide, though 

 some meadows along a stream near by showed indubitable 

 evidence of the presence of the meadow-mice during the winter 

 months. At several other points similar conditions were 

 encountered, indicating a seasonal shifting of the colonies from 

 the meadow land, where extensive systems of runways were seen, 

 with many burrows, and some balls of grass formed into nests 

 and lying on the ground. The mice can move freely about under 

 the snow that covers these meadows through the winter ; but 

 in the summer all such places were completely deserted, and 

 nearly all the mice were on the little rocky islets, as noted above. 



As we traveled south they became more and more scarce ; 

 assiduous trapping at three points on the west coast of Dall 

 Island produced but a single specimen, and no runways were 

 seen anywhere. On Annette Island many runways were seen 

 in a little meadowy but they were all deserted, and no specimens 

 were secured. On Suemez, Duke, Gravina, Revillagigedo, Etolin, 

 Wrangell, and Zarembo islands no meadow-mice were secured, 

 nor any sign of their presence observed, at the points visited, 

 though they certainly may be supposed to occur at most, if not all 

 of these places. 



On Mitkof Island they were fairly abundant along the beach, 

 though not nearly as much so as I expected, judging from the 

 sign. They were feeding largely in the tall beach grass, inun- 

 dated at high tide, and the receding waters carried out quantities 

 of cut grass, so much so that it looked almost as though some one 

 had been cutting hay in the vicinity. They apparently were 

 living in burrows at the edge of the forest, which here as else- 

 where, extends to the high tide mark, and travelled back and 

 forth across the gravelly beach under the logs and other drift 

 with which it is thickly strewn. Under these logs little piles of 

 cut food were found, consisting mostly of two plants growing in 

 abundance on the beach, Arenaria peploides and Galium aparine. 



