MF Smith 1993 JOURNAL Barilochs Prov, Rio Negro, Argentina Nov.23 We drove out along the road to Colonia Suiza to a spot near Lago Perito Moreno where the Pearsons had caught 6 or 7 A. olivaceus a few weeks ago. I set my line of 35 Sherman traps (5 of them small traps) in bushes on the edge of grassy areas near a creek leading into the lake. When I walked back along the line I had already caught 2 animals, both A. olivaceus. I caught a third A. olivaceus soon after that. It seems that this species is active in the daytime, or at least late afternoon. Payne caught 1 Abrothrix olivaceus too and 1 Oligoryzomys longicaudatus before we left that evening. We also had 4 steel traps set for tucos tucos near the burned area. We had a picnic dinner in a beautiful spot by the lake before the final trap check for the evening. Wed Nov.24 Drove out at 7:30 am to check the traps near Lago Perito Moreno on the road to Colonia Suiza. Out of 38+9 119 traps we caught 21 animals, plus the ones from yesterday afternoon. Abrothrix olivaceus 1 Oligoryzomys longicaudatus 11 Abrothrix longipilis 8 Auliscomys micropus 1