W.R. Davis 1935 Shoshone Falls, Snake River, Twin Falls Co., Idaho. July 10. This a. m. I hunted for C. mollis near where I slept last night, but failed to see any evidence of their presence. I then drove to Twin Falls, hunting on the way. About 15 mi. W of Burley I found a colony, but from all indications most of the members were aestivating. I saw two individuals and several burrows that had been used this summer, but which now had spider webs across the entrance). None was taken here although I hunted for fully 30 min. About 13 mi. E of Twin Falls, at the edge of the irrigated area I found an active colony and hunted for about an hour, taking 28 and 14. They were numerous here, but so wary that hunting was a task. The colony was located in an area about 100 yds long and 30 yds wide between a canal and the highway. The principal cover was Artemisia tridentata and June Grass. The latter was mature and dry. In the grassy areas numerous well beaten trails were in evidence, crossing and recrossing each other. These led from burrow to burrow and also from burrow