Critical Notes on Two Southwestern Sparrows

The authorities of the American Museum of Natural History, University of Arizona and Arizona State Museum, and especially the United States National Museum and the Fish and Wildlife Service, U.S. Dept. of the Interior, have greatly helped me in this study. also wish to thank Dr. L. C. Sanford and Messrs. Lyndon L. Hargrave, Gale Monson, and Dwain W. Warner for the privilege of examining specimens in their private collections; Major E. A. Goldman for help in locating certain Mexican localities; Dr. Herbert Friedmann and Mr. Charles O'Brien for making certain critical American Museum specimens available in Washington; and Mr. J. Southgate Y. Hoyt for supplying data on the Botteri Sparrows in the Museum of Comparative Zo61ogy at Harvard College.