Davis. 1940. 31). Aug. 20. Old Fort Clatsop, 100', Clatsop Co., Ore. Ran traps and skinned a.m. + p.m. All insecti-vores, 5 shrews and 2 Neurotichus_, in 75 traps. This must be an up-cycle of Sorex_. Neurotichus_ are by no means rare. Zapus is uncommon, as is Peromyscus_, quite a contrast from the other side of the river. Aug. 21. Ran traps + skinned, a.m. + p.m. Usual comple-ment of insectivores, + nothing else. Shot one My-otis after supper. Aug. 22. Three Sorex_. Traphines getting stale. Picked up line in deep grass north of camp, and moved them to a creek south of camp. Creek bordered by Xerophyllum_, Carex_, and Alnus rubra_. Set most of the traps in underground runs. Also picked up all traps set south of camp in woods about spring, and along creek flowing into these woods. Aug. 23. Change in traplines reflected in day's catch - 4 Microtus_, a Zapus and a Peromyscus as well as the usual complement of Sorex_. Shot one Entomias townsendi_. Set more traps in the Xero-phyllum_ and Carex_ away from the creek. Now have a line of about 70 traps. Aug. 24. Traded Russell a Neurotichus for an Entomias_. At Chattin shot a nice young whitethroat in fine plumage. Never realized they had so much yellow on the legs. Chaitin made a rude seine out of mosquito bar, and I really slaughtered the tri-