Guti, Blaiz 1975 Journal 2 mi. E. Big Pine, Inyo Co., California April 24. Summary of trapping results as follows: 9 Dipodmys merionii; 25 D. microps [13 σσ, 12 ♀]; 4 Perognathus longimembris, 1 Perognathus maniculatus, 1 Onychomys leucogaster. Many microps were met in traps, indicating activity early in the evening. April 25 Summary of trapping results: 7 Dipodmys merionii; 22 Dipodomya microps [12 σσ, 8 ♀, 2 ?]; 7 Perognathus longimembris, 2 Onychomys leucogaster, 2 Ammospermophilus leucurus. 6 of 9 D. microps were juveniles April 26 10 mi. N Wolf Hole, Mohave Co., Arizona Last night was quite cold; temperature at 5:30 am being -1.50 C [29° F]. Very good capture rate in 100 folding pheno- line traps. Trapping results as follows: 16 Dipodomya merionii, 29 D. microps [16 σσ, 13 ♀♀], 1 Perognathus famosus, 4 Nestorinus leucodon, 3 Perognathus longimembris, 1 Onychomys leucogaster, ?.