P. PEARSON 1952 65 May 13 My traps not touched. No tireman calling in morning. Drove to 35 km. ENE Purgio, 14,600 ft. Much of the drive across a border stream pampa growing mostly to northern bunch grass, little grazed, but some stunted tota rigida, ygerophyllum, etc. Scattered shallow ponds. Many vireo. In some places misachar diving among boulders on the flat pampa. Camped on rolling pampa - Nothera gron, 2-inch bunch grass, lyerophyllum, a little tota rigida and Lynomys sage. Set 35 traps in rocky talus. 5:45 a.m.-24°-68% 10:10-45°-50% 8:15 - 35-69 10:40-48-48 May 14 Temp. 5:45 a.m. 26°. During traps (Chreomys, (Ph. darwini), ( Ph. pictus. No tireman calling although some called last evening. 10:30 a.m.-46°. Drove over vireo pampa + debor. Monies of hawletas + coots. Camped on a saddle. at 13,500 ft (5 km. NE Purgio. Passed considerable lupino in bloom at 13,800 ft. At 13,700 ft. considerable fleshy Dencio and tota quadrangular in bloom. But traps around a corral with much blooming fleshy Dencio, and a few traps along road walks very fleshy Dencio. Many Motley brockas near camp in lush ichn and quadrangulare. Some ichn clumps almost breast high. While returning a bomb from a deep sundere canyon found considerable ice at the bottom of it - at 5:30 p.m. May 15 Temp at 6:00 a.m. 35°; some first time my traps with Phyllotis pictus and 5 absdon folin, 2 Phyllotis darwini, and one zebbing of the no-white-red- sued variety. Drove down to Purgio past irrigated grain fields,