P. Zweifel 1953 Journal June 26 return to Chihuahua City and drive south. We camped at an abandoned adobe 1,6 mi. W Pedernales in the overgrazed piñon - oak association. June 27 Nesting robins were present here. Bill shot a brown towhee and poorwills were heard after dark. Scrub jays and flycatchers also were present. Reptiles collected included Pitophis catenifer, Sceloporus jarrovi and Sceloporus poinsettii. The commonest bird throughout this “alti-plano” region is the horned lark. Probably the intense cultivation with destruction of the oak scrub and overgrazing have combined to allow a considerable expansion of the area occupied by this bird. Leaving the Pedernales camp, we drove to Hidalgo del Parial. On Parial we met an American (Bryan Bruce [illegible], Apt 85, Parial) working for the American Smelting and Refining Co. Lead and silver mine in Parial. His offer of liquid refreshment was accepted with impolite haste, and resulted in our spending the night at his home and even included the use of a swimming pool. The capture of a Bufo punctatus at the swimming pool justified this excursion.