148 NORTH AMERICAN BIRDS. 



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

 TringinoB.) 

 &. Bill only slightly or not at all widened at tip. 

 d 1 . Hind-toe present. 



e 1 . No trace of web between anterior toes. 



/'. 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 2 . Middle toe united at base to one or both of the lateral toes by 

 a distinct web. 

 Z 1 - Tail more than half as long as the wing, graduated for as 

 much as the length of the culmen. 



Bartramia. (Page 168.) 

 P- 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 1 . "Wing less than 4.00. (All anterior toes webbed 



at base.) Ereunetes. (Page 161.) 



h'. Wing not less than 4.00. 



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



the wing Pavoncella. (Page 168.) 



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

 as the wing. 

 f. Bill narrow at tip, where hard and 

 smooth on top. 

 k l . Wing less than 4.50. 



Actitis. (Page 169.) 

 A 2 . Wing more than 4.50. 



P. 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.) 



