W.B.Davis 1935 5 mi. SE [illegible] Murphy, Owyhee Co., Idaho, May 27, are also present in Citellus pregomes and in one specimen measured three mm. in length. There is a whitish exude that can be forced from the papilla, but the odor to me is not offensive. Aldrich caught two Thomomys townsendii in 10 sets. The field in which he trapped had been irrigated recently and he was told by a ranch hand that during the irrigation "several hundred" had been killed. They are detected by all the ranchers here. We have been unable to take any of the I, quadrature group in this area. Perhaps they are found higher in the mountains). Aldrich also found Citellus pregomes in numbers at the ranch on Sinkers Creek. They had their burrows in the Artemisia and tall sawgrass and foraged in the alfalfa field. In order to do this they had to cross an irrigation ditch and Aldrich reported that they entered the water and swam to the opposite side quite readily. Six of them were collected - two with bobbed tails -