35 



cc. Bill not as above, but with the nostrils opening 

 beneath a soft swollen membrane. 



Tail of 12 feathers, Passenger Pigeon. 



Tail of 14 feathers, Moukning Dove. 



ccc. Bill and nostrils not as above, 

 d. Hind toe elevated above the front ones, 

 e. Gape of mouth not reaching below eye. 



Tail of 18 feathers, Euffed Grouse. 



Tail of 12 feathers, Bobwhite. 



ee. Gape of mouth reaching below eye. 

 f . Length over 8 inches. 



Tail rounded, Whippoorwill. 



Tail slightly forked, Night Hawk. 



ff . Length under 6 inches. 



Length 5 inches, Chimney Swift. 



Length 3 inches, 



Edby-throated Humming-bird. 

 dd. Hind toe not elevated, 

 e. Primaries 10, outermost at least two-thirds as 

 long as longest, 

 f. Length over 8 inches. 



Pure white beneath, King-bird. 



Not white beneath, 



Great Crested Flycatcher. 

 ff. Length 7 inches or less. 

 g. Length over 6^ inches. 



Bill wholly black, Phoebe. 



Lower mandible not black. Wood Pewee. 

 gg. Length 6 inches or less, 

 h. Throat yellow. Yellow-bellied Flycatcher. 

 hh. Throat white. 



Length 6 inches, Traill's Flycatcher. 

 Length 5J inches. Least Flycatcher. 



