mell where we looked for bats last november (also had pods of dolphins in november). In a deep passage in the cliffs just wide enough to enter, about 15 ft., up in a narrow crack 1/2" wide, were about 8 mystics. We picked 5 of them out with a pole. They were cool; not really cold, but unable to fly. All 5 were males. On the other side of the crevice and too high to reach without a pole was another cluster of mystics, perhaps 6 or 8. Found several other apparently suitable caves in the same cliffs, but no bats in them. Afternoon mostly cloudy, a few sprinkles. stayed in hotel (Hosteria Steiner) in evening. April 30. El Bolsón. Warming in 40s, mostly sunny. Car not fixed until 12:30. Then returned to the last cave 3 am N and accompanied by local boy Ramori caught 3 more bats at same place. One of them was in a place not occupied yesterday, and one was dead, probably killed by our poking around yesterday. Temps. in cave must have been about 50°. at 4 p.m. drove around the circuito mallin E. north of town, stopping at various places known to be real or potential bat sites. Carlos Kovacs and his father accompanied us. One site was a hollow tree (coihue), but currently empty. May 1. Early a.m. near 8°, morning partly cloudy. Drove to Bariloche, then out to Villa Tacul, which is somewhat beyond flow-flow where there are some fancy houses and a collapsed concert building with good bat chambers, but no bats. Too new? Cold and windy, about 8°. Flew to the garage @ Hotel Sapo Maresco where we strung 3 nets. Cold. Temp @ 8 pm 38°? Full moon,