J.R. Alcorn 1943. Itinerary 3 mi. NNW Patzcuaro, 6700 ft., Michoacan Friday March 5, 1943 I visited the traps that were set on the grass slope and caught only a few specimens, (See Catalog). These specimens were prepared and late this afternoon we drove to a hill 2 1/2 miles west of Patzcuaro. There in a cave we captured 4 bats and I set 75 traps on a slope where pine and oak trees were abundant. Much "underbrush" was present in the area. Saturday March 6, 1943. Visited the traps this morning and caught only three mice. Left the traps out and this afternoon I set 60 more mouse traps, 18 rat traps and 3 no. 2 victor steel traps. These were set on an open slope that was in a cultivated area about 1/4 mile from the traps that were set in the oak + pine.