P. PEARSON 1955 Oct. 26 Left with Koffkee by train for San Bartolome, thence Zarate. We all walked out about an hour short of Zarate, so left packs and went on to set traps and get water. Put out about 40 traps, mostly along the trail under rocks in the forest. Saw a mouse carrying a mouse, in a rock slide. Mr. Koffkee shot it twice with 22 shot but didn't stop it. Oct. 27 Zarate. Traps held 1 Phyllotia and two and 2 alodon. The forest is open enough in places so that there is dried grass (alodon) and brush (Phyllotis). The forest is on a steep, south-facing slope and contains trees up more than 2 feet DBH. Most coniferous are a big-leafed tree reminiscent of yucares with bigger leaves and with green. 45 cotter quite refining and a smaller tree with shape and foliage of lime oak and bark of modrone. About 3 other species of trees also. The woods are very dry now, but in the thicker parts there is heavy moss canopying the trunks, hanging lichen, and bromeliads. Many of the trees are topped by dried vines (but not [illegible]). In the thicker part of the woods are many big overhanging rocks. Stone walls have been built up under them and along side, forming caves for burials. Some of these have dozens of skeletons in them plus clouds of grubs. Trees > 1 foot DBH have grown up since the walls were made. The floor of the forest is open, leafy, with muck. The Koffkees say that after the rains the floor is a mass of green + flowers and many of the tree crowns are invisible because of vines. Put out traps among the grave walls in forest behind (alone) the camping place and also along the brashly bottom of