32 



KEY TO THK BIRDS OF EASTERN NORTH AMERICA. 



* Group 5. Wing, over 8.50 inches long. 



tSk 



Head and neck, black, easily distinguished 

 by the sliape of the bill; a wliite line on bill. 

 Alra tonla. Razor-billed Auk. 



See No. 15. 



Head aud ueek, sooty brown; billpointed, no white line on bill. Una troile. Murre. 



See No. 13. 



* For dircctione for measurement, see page 9. 



