Lundricken 1950 Journal June 20 Went with three de Aguiro boys and a neighbor boy (in my car) to mountains west of San Marcos (Sierra de Jitlan). About 1/3 of way, at ranch settlement called Puerto de Cocker, collected Gymnidophorum and Scelopus with slingshot. Went on over about 10 miles of exceedingly rough, washed-out road to Rancho El Rodeo, another ranch settlement and charcoal depot well up in the mountains. Major tree cover at El Rodeo is Quercus macrophylla, a very large-leaved oak growing about 20-35 ft. high as seen here. Pines (?) or other conifers were visible at higher altitudes, but were not reached. The country is much-worked by charcoal burners and no extensive dense plant cover exists anywhere we visited. Water was standing or flowing at many points in arroyo bottoms, but high ground seemed quite dry. Collected two Bufo and two Hyla arenicolor (?) from burrows exposed by rolling large boulders (5 to a team, rolling 3' x 5