148 NORTH AMERICAN BIRDS. 



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

 Tringince.) 

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

 d}. Hind-toe present. 



e\ 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.) 



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



webs of quills and under primary coverts beautifully 



mottled Tryngites. (Page 169.) 



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

 a distinct web. 

 p. 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^. Tail longer than the exposed culmen. 



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



at base.) Ereunetes. (Page 161.) 



/i'. Wing not less than 4.00. 



^'^ Exj)osed culmen less than one-fifth as long as 



the wing Pavoncella. (Page 168.) 



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

 as the wing. 

 /. Bill narrow at tip, where hard and 

 smooth on top. 

 k^. Wing less than 4.50. 



Actitis. (Page 169.) 

 k^. Wing more than 4.50. 



l^. Axillars uniform grayish or 

 dusk}^. 

 m)-. Quills entirely dark-col- 

 ored ; no web between 

 inner and middle toes 

 at base.. Heteractitis. 

 (Page 167.) 

 m^. Quills with a conspicuous 

 white patch at base ; a 

 distinct web between 

 inner and middle toes, 

 at base.. Symphemia. 

 (Page 167.) 



