Chattin 1939 Itinerary Columbia R at mouth Deschutes R. Wasco Co. Oregon July 1 cont'd situations and in dry chest grass (?) near sagebrush plants. Results - total of 4 specimens. 2 Peromyscus maniculatus (both ♂) 2 Perognathus parvus (both ♂) July 2 Columbia R at mouth Deschutes R. 300 ft. Sherman Co. Oregon 35 mouse traps set out along fence line at the edge of a pasture about 15 yds from the edge Deschutes river. 4 gopher traps set in sandy ground three the pasture. Results 6 Reithrodontomys megalotis all ♂ 3 Thomomys talpoides all ♀ 1 Mus musculus ♀ 2 Melospiza melodia also caught in mouse traps. At 9:00 P.M a bat (Eptesicus fuscus) was shot at the edge of the river. Bat was only slightly wounded and is still alive (7:20 P.M.) July 3 Set out 48 mouse traps 15 faces apart along edge of alfalfa field and along edge of willow thickset 3 gopher traps set out in pasture in sandy ground. Results. 4 Reithrodontomys all ♂ 2 Thomomys ♂ 1 ♀ Mus. 1 Song Sparrow. Description of Region about mouth Deschutes river - Soil is