Pearson - 1993 8 13 November- Bariloche. Clear clear. Minimum 43. At 7 p.m. put out traps in the burned pampa behind the Centro Atómico. We could hear the Rio Casa de Piedras. The location must be about 12 km W Bariloche. The bridge at Rio Casa de Piedras on the map seems to be about 1/2 km farther and a bit more north, but only 1 km away. I set 35 Shermans (7 of them small Shermans) in the burned brush near the edge of unburned pampa, across the pampa, and along the edge of unburned brush and unburned pampa. The pampa vegetation is a small neneo, acaena, a chaura-like ground cover, another ground cover, very little grass, a few herbs such as dandelion; at least 75% ground covered. Very few tuco signs out in the pampa, but under the burned bushes were lots of tuco mounds, at least 100/acre. Saw no fresh mounds, however, and heard no tucos. Set numerous traps at mouse-like openings in tuco diggings. Saw some mouse tracks in the light sandy soil and ash. Anita set 27 big Shermans. The bamboo clump that had two new, 2-inch shoots a few days ago now has four. Patricia Fierro came by. She is in touch with Mary Taylor about a Clevelend Museum trip in January 1985. 14 November- Bariloche. Minimum 44. Clear. Picked up traps in the Pampa Quemada at 7:30. My line had three Eligmodontia, all in bare ground places: two of them in front of "tuco" holes under the burned out bushes, no ground cover, and one at the edge of a big bare sandy excavation, but holes under the rim. I caught nothing out in the unburned steppe. Anita caught two big Ako longipilis (released). Total trap success = 8%. The burned bushes, approximately in order of abundance, are: nire, retamo, berberis, radal, laura (Schinus patagonica), maiten, rosa mosqueta, mutisia, bamboo, palo pichi. Most of the rosa was near the road. Most impressive was the frequency of burned clumps of retamo (Diostea), surrounded by unburned steppe. It seems as though the retamo accumulates heaps of very flammable material around the base (suicide leading to regeneration after fire?). Farther back the dirt road back to our traps is a rather dense-grass area, then cipres forest going up a slope. In the afternoon drove east of town to Las Victorias, a huge real estate development. No houses yet, but streets (unpaved), trees, utilities are in. It has not been grazed for years, but some brush control has been in effect. The vegetation is