384 NORTH AMERICAN BIRDS. 



f. Tail-feathers narrow, the middle ones, at 



least (sometimes all), acuminate. 



k 1 . Distance from bend of wing to tips 



of longest greater wing-coverts 



greater than from latter point to 



tip of longest quill. 



Spiza. (Page 451.) 



k 2 . Distance from bend of wing to tips 



of longest greater wing-coverts 



less than distance from latter 



point to tip of longest quill. 



P. Middle toe, with claw, decidedly 



shorter than tarsus. 



Poocaetes. (Page 406.) 



P. Middle toe, with claw, not 



shorter than tarsus.... Am- 



modramus. (Page 407.) 



f. Tail-feathers broader, not acuminate. 



Jc l . Wing more than 2.25. 



I 1 . Hind-claw decidedly longer than 

 its digit. 

 m 1 . Bill tapering very rapidly 

 to the acute tip, the 

 cutting-edge of upper 

 mandible distinctly con- 

 vex or lobed toward 

 base ; nostrils concealed 

 by small antrorse feath- 

 ers Passerella. 



(Page 433.) 

 m 2 . 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.) 

 P. Hind-claw not longer than its 

 digit. 

 mi 1 . Tertials elongated much 

 beyond secondaries, 

 nearly equalling long- 

 est primaries. 



Calamospiza. 

 (Page 452.) 



