P. PEARSON 1955 Sept. 25 Yuruma. The akedra-thorn trail has had 4 Hefferwyz, all in somewhat grassy places (rich). The cotna-thorn-rich line had 2 Hefferwyz (grassy), 1' Geronwyz (thorny) and, at least one big Octodon. One of the Geronwyz upon skinnin' turns out to be a Phyllotia Billybighta. Grayey, later in life lighter, foot/pose different. Seems more like damini than gracilis. Just beyond the fields of Yuruma the vegetation changes abruptly. No more cotna, no akedra; a dry tela appears-like a narrow-leaved Barbaria plant a foot tall. This makes prampas+ rolling hills of bushy thorn (not red tree and yuruma), tela, and rich. Still lots of bare ground. Camped at 5 mi. W Villazon, 11,500 ft, at one of two rock outcrofs seen today, and the outcrops not providing much shelter for Phyllotia. Vegetation is tela, grass (noticeable but an oat-like stem) and widely scattered thorn bushes. Used to be some bigger than trees but recently cut. Cold + windy. About 1 1/4 logs of traps out. Few phyllotising places to set. Boote, sheep, & burrows. Sept. 26 Traps held 5 Elgyodontia (under thorn bunks on prampas), 3 Hefferwyz, 1 Bolonyz (under thorn on prampas), and 2 Phyllotia damini (in rocks); one of these in front of the only good burrow that I saw. Night clear with light frost + dew. A ghastly dog wrestling with the adwara. He won. Truck is impounded, I am in a "hotel," go to Argentina tomorrow by train at 9:30 am. Sept. 27 The police official who stamps Margarta showed up at 9 a.m., and dash with suitcase down railroad track (mile) toward train waiting at La Quica station. Saw at gate says need permit to pass with 100 mouse traps. And dash back to Villazon adwara who says "Don't"