K. Selander, 1952 13 July 26 Rio Mutzlitlan, 4000 ft., 20 mi. N Atotonilco, Hiedalgo, Mexico. Went to bed at 10:30. Very tired from long hike today. Stomach acting up a bit. July 27 Up at 8:00; very stiff and weak; stomach upset. Hunted around camp for 2 hours. Collected 8 Wrens (C. poioosus) and 1 brown towhee. Noted the following species not seen yesterday: Acorn Woodpecker, (Dendrocopos pair in walnut tree); [illegible] scalaris (pair in walnut Dendrocoptes) tree); flicker (sp.? heard); Lomb reports the following additional species as being present; hummingbird (sp.?); Canyon wren (heard near a rock slide); Phyllosciza cinerea (seen); Cardinal (1 collected by Lomb's helper); curve-billed thrasher (1 collected in mosquitoes); Crested Flycatcher (sp.?)(1 collected); Wood Pewee (heard;) [seen] goldfinch (Species sp.?)(1 collected); black-headed grosbeak; Setornus fruticulatus (1 collected by Lomb); Hepatic Tanager, white-winged dove (Lombi reports one flying over the arroyo.), 5 Skinned lizards in afternoon. The weather good today, no rain. Ponies and trucks are crossing the river at the ford regularly - some stuck and tons to be pulled out. Broke the glass on the Coleman lamp last night, so we are not collecting insects now; will pick up a new glass in Mexico City in a few days. July 28 - Hunted upstream from 8:00 until 12:00. Collected 4 C.joiosus, 1 Phyllosciza cinerea, 1 blue grosbeak, 1 Sporophila torqueta, 1 Setornus wagleri, and 1 Flycatcher (an immature wood pewee?). Wrens not easily found