Villablanca 1992 Dales 6Nov area was scattered clumps of chernozem with grassland in between. Found burrows + pit caches. The soil at all 3 trapping spots is from conglomerate parent material. The soil surface is hard, packed with rounded (alluvial) stones, and loose stones cover the ground in many areas. 7Nov Line A (15 traps) produced 2 D. calif. and 2 Peromyscus truei, Line B only 1 D. cal. and line C (20 traps) captured only 4 P. truei. There are D. cal. at line C, but none were trapped. Found 1 trap with a P. truei in it and also the white tail tip of a D. cal. Both would have had to have been foraging at the entrances or in the trap at the same time. 10Nov Trapping for D. cal., set 40 traps alongside Hwy 36; on a dirt road between the Hwy and a ranch fence. 0.8 mi. E. Dales. Tehama Co. Calif. 700ft. This area is littered with vol- canic rocks on the surface, and seems to be mostly lava flows. The soil surface is almost always covered with rocks, from pebble to boulder.