N slope Mt. Tacaguate, 4600', Ref't. Morazan, El Salvador Dec. 28, 1941. Took a long walk in the morning; went west of camp several miles, and made a big circle, returning southwest of camp. Hit all kinds of country except pine forest, i.e. coffee, cleared oak, uncleared oak, and grassland. Altitudinally I ranged from about 3900'-5000'. Saw not one reptile all the time I was out. Collected a Troglodytes musculus which I gave to Joe Marshall. In the p.m. the finca manager supplied me with a native guide who was supposed to know where there were many snakes. He took me up the north slope to the ridge below the summit, pointed to a narrow winding path leading down the steep south slope, told me to walk down the path and I would run across all sorts of snakes. I went down the slope about a quarter of a mile, and saw only two Ameiva undulate, both very young individuals. I returned to camp same specimens, & to pass the time, put up an immature Piranga (180) that Joe gave me. Santiago, our native boy, told me that there was a place along the road to Ocotal, a small village NE of here, that was teeming with snakes, including the dread TOMAGAS, a very venomous, coal-black snake with two heads, that progresses not by crawling, but by alternate leaps of the two heads. He told me that he had seen one near Monte Cristo. In the evening,