Palmer 1935 Perognathus fallax Junga Mts, 850 ft, 6 3/4 mi. NE Riverside, Riverside Co., Calif. Aug. 15, 1935 Caught 5 (♀♀) in 40 gm. size mouse traps. 2 taken in sandy wash with few bushes of Salvia apiana, Salvia mellifera and Artemisia californica. 3 taken on flat with mixed fairly thick growth of Eriogonum fasciculatum, Salvia apiana, Opuntia, and Avena, all on hard baked soil. = Perognathus californicus 1 mi. NE Laguna Beach, 500 ft., Orange Co., Calif. Aug. 18, 1935 Caught 2 ♀♀ in 49 gm. size mouse traps. These taken on west facing & hillsides on bare hard ground beneath large bushes of Artemisia californica.