SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 89. NUMBER 13 



A SYSTEMATIC CLASSIFICATION FOR THE BIRDS 

 OF THE WORLD, REVISED AND AMENDED 



BY 



ALEXANDER WETMORE 

 Assistant Secretary, Smithsonian Institvition 



(Publication 3242) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 23, 1934 



