I>^ 



Old Series, I Continuation of the ( New Series 



Vol. XXVIII. f Bulletin of the Nuttall Ornithological Club. ( Vol. XX. ' 



The Auk 



91 ^^uarterl^ 31ournal of €>rnit]^olog^ 



editor 

 J. A. ALLEN 



associate editor 

 FRANK M. CHAPMAN 



VOLUME XX 



PUBLISHED BY 



The American Ornithologists' Union 



« » » 



CAMBRIDGE, MASS. 

 Entered as second-class mail matter in the Post Office at Boston, Mass. 



