/IDemotrB of tbe flDuseum of Comparattve ZoSIoq? 



AT HARVARD COLLEGE. 



Vol. XL. No. (J. 



BREWSTER^S WARBLER 

 {HELMINTHOPHILA LEU COBB ONCHIALLS) 



A HYBRID BETWEEN 

 THE GOLDEN-WINGED WARBLER {HELMINTHOPHILA CHRYSOPTERA) 



AND 



THE BLUE-WINGED WARBLER {HELMINTHOPHILA PIN US). 



BY 

 WALTER FAXON. 



CAMBRIDGE, U. S. A.: 



IPrtnteb for tbe flDuseum. 



August, 1913. 



