Panache Creels, 630 ft., Fresno Co., Calif Jun 6. were set, about 20 yds apart, and spaced at 10 yd intervals with in each line. Much sign of rodent activity, at least 2 sizes of 'dip' holes. I expect D ingens and h. hermanni at this locality. 10" Simon live traps, non-folding, were used with Hertz m.w. Houston & Zerlil food as bait at the second locality, up the road with Lock 2043 immediately west of the hill, less sign was seen, some smaller holes, some on a slope. I would expect D. hermanni and micratusdes here. The day was clear, but cool, about 50, with temperatures falling rapidly at night. I camped at a picnic area near Panache Creels. The moon had almost set at 6:15 P.M., and the night was still, cold, and dark in the absence of moon. Habitat generally arid scrub with bare flats, almost devoid of vegetation. No cattle at present but sign of many years of cow grazing. Jun 7 Before very cold at night, a layer of frost covering all. I awaked at 04:00 A.M. and turned on the car engine, then drove to San Joaquin area, returning to Panache at 7:15 A.M. just at sunrise. I caught only one animal, a Fresno Kangaroo Rat, at site #2. He was frozen solid! At site 1, I had better luck