Pipilo fuscus Mexico, D.F. to 5 mi. E of Perote, 8700 ft. Vera Cruz, Mex. July 6, 1946 62 miles east of Rio Frio, at a point one mile east of the junction of the Orjala-Tepico, D.F. and the Jalapa-Mexico, D.F. Roads, a large stand of shrub, tuna cactus and maguey bordered on the road, and 4 P. fuscus were seen. At the town of Zalaya, one Brown Towhee was seen on the roof of a house. 3 mi. NE of Zelayeta, in Puebla, Mex., 7600 ft., a Brown Towhee was collected from a maguey plant just off the road. The terrain was scattered maguey, brush grass and tuna cactus. Brown towhees were seen commonly around the towns of Perote, Sierra de Agua, and Las Vegas. They frequented the maguey hedges rows between corn and grain fields. On the way from Mexico, D.F. it became was surprising with what accuracy one could predict whether a certain area would or would not produce sight records of P. fuscus. 2 Conclusions become evi- dent; -1) That extensive areas of conifers without breaks constitute an effective barrier against P. fuscus ; 2). That the necessary ecologic niche for P. fuscus includes low, permanent or semi-per- manent vegetation, not too dense. Annual field or farm crops apparently do not provide sufficient or long-lived enough corn for Brown Towhees. Some plant types that seem to be preferred are: maguey, Bochana and tuna cactus. Where there are annual