"Journal Hafner, ms. 1974 30 August (see 27 September 1974 for actual locality) 9 mi. NE of Johannesburg, in valley 10 mi. N. of Cutteback Lake, San Bernardino Co., 3200', California (camp 2). We arrived here ~ 2130. Full moon, calm, very warm evening. We set out 190 live traps on the valley floor. There was much evidence of washing due to flash floods (in the spring). Our attempt is to capture D. merriami which live in allopatry from D. panamintius - previous trapping in this locality indicate this is the case. 31 August (see 27 September 1974 for actual locality) 9 mi. NE of Johannesburg, in valley 10 mi. N. of Cutteback Lake, San Bernardino Co., 3200', California. 0600 - awoke and checked traps with following results: 47 Perognathus formosus 13 D. merriami 7 ♀, 6 ♂ 2 Peromyscus maniculatus 3 Peromyscus (sp?) 4 Perognathus longimembris