148 NORTH AMERICAN BIRDS. 



summer, and young different in color from adult. (Subfamily 

 Tringince.) 



c 1 . Bill only slightly or not at all widened at tip. 

 d 1 . Hind-toe present. 



e l . No trace of web between anterior toes. 



f 1 . Exposed culmen longer than middle toe, with claw ; inner 

 webs of quills and under primary coverts not mottled. 



Tringa. (Page 152.) 



/ 2 . Exposed culmen shorter than middle toe, with claw ; inner 

 webs of quills and under primary coverts beautifully 



mottled Tryngites. (Page 169.) 



e 1 . Middle toe united at base to one or both of the lateral toes by 



a distinct web. 



jf 1 . Tail more than half as long as the wing, graduated for as 

 much as the length of the culmen. 



Bartramia. (Page 168.) 



f 2 . Tail not more than half as long as the wing, and if grad- 

 uated, the graduation not more than one-half the 

 length of the culmen. 

 g l . Tail longer than the exposed culmen. 



h l . Wing less than 4.00. (All anterior toes webbed 



at base.) Ereunetes. (Page 161.) 



A 2 . Wing not less than 4.00. 



1 1 . Exposed culmen less than one-fifth as long as 



the wing Pavoncella. (Page 168.) 



1 2 . Exposed culmen more than one-fifth as long 



as the wing. 

 j 1 . Bill narrow at tip, where hard and 



smooth on top. 

 A: 1 . Wing less than 4.50. 



Actitis. (Page 169.) 

 A 2 . Wing more than 4.50. 



I 1 . Axillars uniform grayish or 



dusky. 



m 1 . Quills entirely dark-col- 

 ored ; no web between 

 inner and middle toes 

 at base.. Heteractitis. 

 (Page 167.) 



m 2 . Quills with a conspicuous 

 white patch at base ; a 

 distinct web between 

 inner and middle toes, 

 at base.. Symphemia. 

 (Page 167.) 



