Diagnoses of Families and Genera 575 



Eurynorhymchus. Size small. Bill spoon-shaped, three times as 

 wide near tip as at base. Toes not webbed. Only one species in 

 genus, and that a straggler to North America. 



Ereunetes. Size small. Anterior toes webbed at base, thus differ- 

 ing from Tringa. Two species in genus, both inhabiting North 

 America. 



Calidris. Size small. No hind toe, thus differing from Tringa. 

 One species in genus, common in North America. 



Limosa. Size large. Bill longer than tarsus, more than one-third 

 as long as wing, thickened and curving upwards toward end. Nasal 

 grooves extending almost to tip. Tail shorter than exposed culmen. 

 Four species found in North America, of which one occurs only in 

 Greenland. 



Tetanus. Size medium or large. Bill nearly straight, slender, 

 about as long as tarsus, not thickened at tip. Nasal groove not 

 reaching to terminal fourth. Tail longer than exposed culmen. 

 Tarsus much longer than middle toe without claw, and more than one 

 and one-half times as long as toe. Toes very slightly webbed. Legs 

 usually yellow. Three, possibly four, species are found in North 

 America, two of which are only stragglers. 



Helodromas. Size small. Tarsus scarcely exceeding middle toe 

 and claw. Legs greenish. Sternum single notched. Differs in these 

 respects from Totanus. Two species and one subspecies in genus ; 

 all occurring in North America, but one only as a straggler. 



Symphemia. Size large. Bill thick, slightly recurved, about as 

 long as tarsus. Nasal groove reaching to about middle. Tarsus 

 one and one-half times middle toe. Anterior toes markedly webbed 

 at base. Legs bluish. Quills with a conspicuous white patch at base. 

 One species with a subspecies in genus, at home in North America. 



Heteractitis. Size medium. Bill straight, heavy, much longer than 

 tarsus. Nasal groove extending about two-thirds of culmen. Tarsus 

 short, equal to middle toe and claw, and about three times as long as 

 hind toe. Outer and middle toe connected by web, no web between 

 inner and middle toe. Quills entire dark colored. Two species in 

 genus, one found in North America. 



Pavoncella. Size medium. Bill straight, tapering, flattened at tip. 

 Nasal groove extending nearly to tip. Tarsus very long, longer than 

 bill, but not twice the length of the inner toe and claw. Bare part of 

 tibia equal to about half the length of tarsus. Outer and middle 

 toe connected at base by web. Tail not more than half as long as 

 wing. Male much larger than female, and face of male in summer 



