Hafun, M.S. 1976 of Lubbock, Lubbock Co., Texas. 26 June We checked traps with the following results: 1. Sigmodon hispidus (2 ad., 5 juv.) 2. Perognathus hispidus (1 ad., 1 juv.) Perognathus specimens were returned to lab for chromosomal analysis. Sigmodon specimens were released. 2 mi. E Searles Station, 9 mi. NNE Johannesburg, 3200ft, San Bernardino Co., California. 9 July 1200: Darcey, Emily, Barron and I departed Richmond and drove via Hwy 580 and 5 to Bakersfield. 1700 Van overheated in Bakersfield traffic (~100°F). We stopped to allow the engine to cool off...No further trouble - appears that the thermostat stuck closed. Continued over Tehachapi Pass and Hwy 14 to the camp I locality (above). 1330 - Set out 136 live traps in 4 directions from camp. The substratum is very dry and contains only dried-up annual from the wet winter of 2 years ago. There are numerous rodent diggings on the surface - perhaps the rodents are recovering surface caches due to the low productivity of the vegetation this very dry year. 2030 - Sun set. Still very warm ~80°F with a strong breeze from the SW. Moon (full) rose about 1930. We slept in the van to stay out of the wind.