Thacker 1954 Species Account 1954 B Oct. 4 Thomomys bottae p. 3. 1.7 mi. E., 1.0 mi. N Calpine, 4910 ± ft., Sierra Co., Calif. Yesterday Dick Banks and I set some gopher traps here. This morning we had one T. bottae and two T. monticola (also 2 here yesterday). This area is in the Sierra Valley. Here is an open cover of sagebrush with grass in between There are a few pines that come out onto the valley floor from the hills to the west but these stop a hundred and fifty yards from where we trapped. This area was along the road from Lattley to Beckworth and Portola, just north of a dry wash. The T. bottae was taken in traps set on the east side of the road on the shoulder. All the T. monticola were taken on the west side of the road. Here the principal areas were gopher workings were seen and traps set were on slight rises one or two of a foot or two. The area where the T. bottae was taken may have been on the somewhat lower ground between such rises but since it was right along the road this distinction can not be made with any certainty. I paced off the distance between the place where the nearest T. monticola and the T. bottae were taken. The distance was 50 yards. 3.5 mi. N., 1.8 mi. E Calpine, 4930 ± ft., Plumas Co., Calif. We checked traps set here yesterday and had one T. bottae. This area is a little patch of grass in an area of sagebrush.