SEVEN NEW WHITE-WINGED DOVES 



3 



University, Museum of ZcK)logy (George H. Lowery, Jr., and Robert 

 Newman) ; Texas A. & M. University, Department of Wildlife Manage- 

 ment (W. B. Davis) ; U. S. National Museum (Philip S. Humphrey) ; 

 University of California, Berkeley, Museum of Vertebrate Zoology 

 (the late Alden H. Miller) ; University of California, Los Angeles 

 (the late A. J. van Rossem) ; University of Florida, Department of 

 Zoology (Pierce Brodkorb) ; University of Kansas, Museum of Natural 

 History (Richard F. Johnston) ; and University of Michigan, Museum 

 of Zoology (R. W. Storer and the late J. Van Tyne) . 



Others to whom I am grateful for specimens or information are 

 Rollin H. Baker, Michigan State University; Alvaro Collado M., San 

 Jose, Costa Rica; Robert W. Dickerman, then with the Oficina San- 

 itaria Pan Americana, Mexico, D. F., and now with the Cornell 

 University Medical College, New York, N. Y.; Herbert Friedmann, 

 then Curator of Birds, U. S. National Museum, and now Director, 

 Los Angeles County Museum; Roland W. Hawkins, Pittsburgh, Pa.; 

 Hugh C. Land, Northwestern State College, Natchitoches, La.; D. B. 

 Legters, Merida, Yucatan; the late Luis Macias A., Chief, 

 Department of Game, Mexico, D. F.; Burt L. Monroe, Jr., University 

 of Louisville; Allan R. Phillips, Instituto de Biologia, Universidad 

 Nacional Autonoma de Mexico, D. F.; Albert Schwartz, Miami, 

 Fla.; Gilbert Shaw and William Stone, U.S.D.A., Laboratorio 

 Entomilogico, Mexico, D. F.; Alexander F. Skutch, San Isidro del 

 General, Costa Rica; Austin P. Smith, Zarcero, Costa Rica; and 

 Helmuth Wagner, Ubersee Museum, Bremen, West Germany. 



Several ornithologists and other scientists now deceased gave me 

 helpful information or other assistance in earlier years: Lee Arnold 

 and Frederick C. Lincoln, Bureau of Sport Fisheries & Wildlife; Wil- 

 fred H. Osgood and Karl P. Schmidt, Field Museum of Natural 

 History; James L. Peters, Museum of Comparative Zoology; Charles 

 Plummer, U. S. Department of Agriculture, Mexico, D.F.; and John 

 T. Zimmer, American Museum of Nautral History. My thanks go 

 also to my fellow biologists and other field men of the States of 

 Arizona and Texas, who have banded many thousands of white- 

 winged doves since 1940 to obtain information on migration, mortal- 

 ity, and other important subjects. Without so many band recoveries 

 of asiatica and mearnsi to help in clarifying the distribution of these 

 birds in migration and on the wintering grounds in Latin America, 

 the relationships of several races would continue to be much more 

 puzzling. 



To Alexander Wetmore I am much indebted for his advice on 

 taxonomic and distributional problems, for his generosity in giving 

 me access to field journals of his 1948 and 1963 collecting trips in 

 Panama, and for the privilege of describing the subspecies panamensis. 



To my wife, Dorothy Chapman Saunders, I owe the principal 

 acknowledgment for her assistance in collecting and preparing speci- 

 mens, making color comparisons, statistical calculations, and editorial 

 suggestions. 



