384 NORTH AMERICAN BIRDS. 



Tail-feathers narrow, the middle ones, at 



least (sometimes all), acuminate. 



li^. Distance from bend of wing to tips 



of longest greater wing-covcrts 



greater than from latter point to 



tip of longest quill. 



Spiza. (Page 451.) 

 k^. Distance from bond of wing to tips 

 of longest greater wing-coverts 

 less than distance from latter 

 point to tip of longest quill. 

 l^. Middle toe, with claw, decidedly- 

 shorter than tarsus. 



Poocaetes. (Page 406.) 



V. Middle toe, with claw, not 



shorter than tarsus.... Am- 



modramus. (Page 407.) 



Tail-feathers broader, not acuminate. 



k^. Wing more than 2.25. 



l^. Hind-claw decidedly longer than 

 its digit, 

 m'. Bill tapering very rapidly 

 to the acute tip, the 

 cutting-edge of upper 

 mandible distinctly con- 

 vex or lobed toward 

 base ; nosti'ils concealed 

 by small antrorse feath- 

 ers Passerella. 



(Page 433.) 

 m^. Bill tapering gradually to 

 the rather obtuse tip, 

 the cutting-edge of the 

 upper mandible not 

 convex or lobed toward 

 base ; nostrils exposed. 

 Pipilo. (Page 435.) 

 Zl Hind-claw not longer than its 

 digit. 

 m\ Tertials elongated much 

 beyond secondaines, 

 nearly equalling long- 

 est primaries. 



Calamospiza. 

 (Page 452.) 



