W. Blevins 1950 Journal 30 Apr. Mexico: Guerrero; 3 mi. W Omitlán, 8200 ft. up one of the rats and a bird of Koford's. In the evening Koford and I walked down to Omitlán in the hopes of taking a snake on the road, looking for anurans in the stream and shooting bats over a concrete water basin just above Omitlán. A few bats seen flying after dark but no good shots were presented. Did not start flying until too dark. There were many (about two dozen) snake tracks crossing dusty roadway in about three and one-half miles down to Omitlán, plus several lizard tracks. Most snakes apparently headed downhill. In one spot track started with a rough loop near edge of road as if snake had simply fallen off overhanging ledge of road cut above. Is this the usual method of solving the problem of steep roadcuts? No snakes seen though a Barissa apparently killed by a native was found at the edge of the road. Only one anuran, a hybrid, was taken by eye shine at edge of stream immediately above concrete pool. It later escaped in some unexplained way. No animals taken on return to camp. A few tadpoles taken from concrete pool and stream. Some bird present just below camp.