Clethrionomys 11 mi. W and 7 mi. S Mitchell, 4850 ft., Wheeler Co., Oregon. June 10, 1938 , Caught three in a closed set wood of white fir and Douglas fir. Averaged 1 per every 10 traps. The ones caught were under old rotten logs where the disintegrated wood had packed down somewhat. In general the localities were dampish and shaded. They had all eaten of the bait. The ears were parasitized by a small orange mite. These were thick and looked like mildew. One female had 8 small embryos. June 11. They are not really common here and are apparently rather widely but evenly dispersed. Usually average 1 per 10 traps. All specimens caught have the "orange scale". Last night while setting traps was very much doubtful about the catch. The woods were more open but of the same trees, Douglas fir, White fir, Yellow Pine, and occasional Larch. The mice were in essentially the same places, not too dry regions under logs adjacent to more complicated system of cover. The mice again had all been at the oatmeal bait.