ABBREVIATIONS 
Acad. Nat. Sci. Philadelphia —Academy of Natural Sciences, Philadelphia. 
Amer. Mus. Nat. Hist. —American Museum of Natural History, New York. 
Amer. Nat. —American Naturalist, Science Press, New York. 
Ann. Rept. —Annual Report. 
Bien. Rept. —Biennial Report. 
Biol. Surv. —Biological Survey, Washington, D. C. 
Cooper Orn. Club. —Cooper Ornithological Club. 
Geog. and Geol. Expl and Survs. W. of 100th Merid.— Geographical and Geological 
Exploration and Surveys West of 100th Meridian. 
Mus. Comp. Zool. —Museum of Comparative Zoology, Harvard University, Cam¬ 
bridge, Massachusetts. 
Mus. Vert. Zool.— Museum of Vertebrate Zoology, Berkeley, California. 
Nat. Assoc. Audubon Soc. —National Association of Audubon Societies, 1974 Broad¬ 
way, New York. 
Nuttall Orn. Club. —Nuttall Ornithological Club. 
Pac. R. Rept. —Pacific Railroad Report. 
Proc. Calif. Acad. Sci. —Proceedings California Academy of Sciences, San Francisco, 
California. 
U. S. Dept. Agr. —United States Department of Agriculture, Washington, D. C. 
U. S. Nat. Mus— United States National Museum, Washington, D. C. 
Univ. Calif. Publ. Zool— University of California Publications in Zoology, Berkeley, 
California. 
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