Hoffnester 1939 Perognathus parvus July 19 Glade Cr., 250 ft, 1/2 mi. N Columbia R., Benton Co., Wash. Set traps along this swampy creek last night, and of these 4 or 5 were set along the sandy banks. These traps caught 2 Perognathus, and by other sign, I would say they are extremely abundant in this canyon. July 20 2 1/2 mi. S.W. Dorrigon, 300 ft., Morrow Co., Oregon Caught 10 Perognathus last night in the plains country on the south side of the Columbia river here. There is abundant sign of Perognathus in this country but those caught were again chiefly juveniles or young adults. Almost all the ones caught were in traps set in the open country between the Purskia bushes, and few were caught beneath any shrubbery. July 22 2 mi. SSE and 4 mi. E Burbank, Walla Walla Co., Wash. Caught a large number of these together with Dipodomys ordii in traps set in the sandy areas south of the Snake R., but north of the Columbia. July 24 Touchet R., 850 ft., 1 mi. W Lamar, Walla Walla Co., Wash. Caught this species on the higher table land which extends south of the Snake River here. The specimens were eaten by ants before gotten out of the traps.