Palmer 1934 Itinerary 1/58 Columbia Ave., Ontario, San Bernardino Co., Calif. Dec.24 Two small boys brought in 2 Thomomys. They had trapped in a vacant field nearby. In the afternoon shot at Brown Towhee a little west of where the traps were set last night. This place designated the same locality as specimens trapped last night. i.e. 1/2 mi. N.E. Ontario, 1/100 ft., San Bernardino Co., Calif. Dec.25 In P.M. drove E on 6th St. to a point, 2mi. E.NE Ontario, 1/100 ft., San Bernardino Co., Calif. where set 55 gov.-sized mouse traps: about 10 traps were set in rather poorly formed runways in some green foxtail grass. The rest were set down a sandy wash among low bushes of: Eriogonum, Artemisia, Senecio, Lotus glabra and some green grass. Dec.26 2mi. E.NE Ontario, 1/100 ft., San Bernardino Co., Calif. In 55 gov.-size mouse traps caught mammals of the following species: 6 Dipos- donys agiles, 6 Peromyscus maniculatus and 3 Reithrodontomys m. longicaudus. Shot 2 robins here and saw Audubon Warblers, Brewer Blackbirds, Doves, Western Bluebirds, Flickers, Sparrow Hawk, Shrike, and Linnets.