PLATE XX 



1. BEI.DING'S YELLOW-THROAT, ADULT MALE. 3. MARYLAND YELLOW-THROAT, ADULT MALE. 



2. BELDING'S YELLOW-THROAT, ADULT FEMALE. 4. MARYLAND YELLOW-THROAT, ADULT FEMAU 



5. MARYLAND YELLOW-THROAT, YOUNG MALE. 

 (ONE-HALF NATURAL SIZE.) 



