Mexico, D. F. July 18, 1946 He said, however, that he had sold some speci- mens to William H. Burt, so there may be a possibility that this material is at Am Arbor. July 19, 1946 Left Mexico, D. F. at about 1:00 p.m. and drove to Mt. Popocatepetl. We passed through Chalco and Amecameca, and drove up the road which takes off 1h mi. S of Amecameca, and ascends the NW side of Popo. We drove to a height of 12,000 feet, which is just below timber-line. The road goining up traverses open fields to about 9500 feet, then passes through mixed pine- fir forest. These pines at lower elevation are long -needled. Above this belt is an area of almost pure fir, and above the firs are dense stands of a short-needled pine. The zacaton, or bunch- grass, is extensive from about 10,000 feet on up. We flushed 4 Romero lagus from this grass over. We went back down the road and made camp on: - NW side of Mt. Popocatepetl, 9700 ft Mexico, Mex. NW side of Mt. Popocatepetl 9700ft Mexico, Mex. July 20, 1946 Hunted from 7:30- 9:30a.m. Shot 1 P. maculates and missed 2 others. They are fairly common, and could be heard calling & singing, but are ra-