Peromyscus maniculatus Palmer 1935 7 mi. E Ontario, 1050 ft., San Bernardino Co., Calif. Aug. 9, 1935 Caught 5 ([illegible]) in 50 gor.-size mouse traps set across a low dune of fine sand. Traps every 15 paces by scattered low plants of Ambrosia psilostachya, Oenothera pallida var. californica, Nicotiana bigelovii, Salsoles Kali, Croton californicus, and Amaranthus gracilans. Jungo Mts., 850 ft., 6 3/4 mi. NW Riverside, Riverside Co., Calif. Aug. 15, 1935 Caught 3 ♀♂ in 40 traps in rather open low brush on hard baked soil. Plants were Salvia apiana, Artemisia californica, Eriogonum fasciculatum and Opuntia. 1 mi. NE Laguna Beach, 500 ft., Orange Co., Calif. Aug. 18, 1935 Caught 1 ♂ in 49 gor size mouse traps. This specimen taken on side of gulch under brush of Rhus integrifolia at edge of grassland and close to several large clumps of Cladium mariscus (Sawgrass).