R.K.Selander, 1954 O. nigricaudatus 37 Rancho Oreonez, SE Tonala', Chio., Mex. March 31 different from that at Tonala'. As you enter the "Acuiloopa Valley" SE of Tonala' the vegetation immediately becomes drier, lower, & more open - a definite change. This continues SE in the valley but at the other side of the hills there is a good forest like that near our present camp. The mango is rare. The totoposte is a common tree as is the guanacaste. There is a short palm around camp which I don't believe we have seen before. Birds are somewhat different from those at Tonala'. Hundreds of white-winged doves in flocks, green jays (1 taken), squirrel cuckoos, Thryothorus pleurostictus - one taken in a dense dark thorny patch at the edge of the stream, at 4:30 I heard a nigricaudatus calling twice near camp but failed to locate the bird. Hunted about an hour around camp without seeing or hearing cactus wrens. The men here at Rancho Oreonez apparently know the "chancuaca chacita" and claim that it is common here. They recognized C. chicpinis when I showed a specimen to them but they may have seen it around Tonala'. - There are several freshly burned over areas just beyond the river where the forest is being cleared. We saw numerous fires on the hills coming down from Tonala' and there are half a dozen fires burning on the Cerro Vernal now. The men claim that Tren Picos is on the railroad about 13 miles beyond