E. Heske 1980 Journal Cerro Moztotol, Chiapas, Mexico Dec. cont. in combo. with the general lowland high temperatures. Duke made the study slans + took tissue samples. Fog lifted considerably ~2100. Turned in ~ 2200. Cerro Moztotol, Chiapas, Mexico december Arose ~630. Fog had cleared- sunny, up above the level of most clouds. Checked trap lines on E. side of road first- two P. guatemalensis in young broadleaf area. Pulled all traps on these two lines; still no captures on upper half-line: habitat to avoid -> some broadleaf + pine, but canopy not very thick. Dense shrubby and herbaceous ground cover ~1m tall, mostly hummingbird flower + another violet scrophulariaceae some smaller yellow ranunculaceae also in bloom. E-facing slope, ~40°, soil fairly dry. No captures at all in two nights. On lower trap line, W of road and down hill, caught 1 P. guatemalensis and ONE HETEROMYS NELSONI (Big ♂)!!! The Heteromys was caught in very moist, W-sloping hillside (~45°). Ground was covered with viny and herbaceous plants, ~25 cm tall. Moss covered most rocks and fallen logs. Some ferns also present. The canopy was dense, mostly broadleaf but some pine. Pine needles and leaves mixed on floor. Duke also caught a Heteromys nelsoni ♀ and one P. guatemalensis. David caught a Reithrodonomys (sp?) on theridge where he caught one animal