118 



bb. Bill moderate or small. 



d. White, with black on wings and tail ; hind toe very long. 



Plectrpphanes, 7, 

 dd. Streaked above; head striped; tail about as long as wings. 



Zonotnchia, 13. 

 ** Species of medium or small size ; length 73^4 or less. 



% Mandibles long and much curved, their points crossed ; colors mainly red or 

 olive. . . ......... Loxia, 4. 



%% Hind claw straightish, twice as long as middle claw ; colors black, white and 

 brown. ,,....... Plectrophanes. 



%%X With neither of the preceding combinations. •- 



e. Nowhere decidedly spotted or streaked. 

 f. Blackish or ashy; belly and outer tail feathers white ; bill pale and with- 

 out ruff. .......... Junco, 16. 



ff. Yellow more or less ; base of bill with a small ruff; no blue. 



Clwysomiiris, 6, 

 ffj. Chiefly or entirely blue, male; greenish or plain brown, female. 

 g. Length more than 6 ; wings with chestnut or whitish ; bill stout. 



Guiraca, 20, 

 gg. Length 5 to 6 ; gonys usually with a dusky stripe. . Cyattospiza, 21. 

 ee. Somewhere or everywhere decidedly spotted or streaked. 

 k. One or more outer tail feathers partly or wholly white. 



i. Hind claw long and nearly straight ; colors black and white or brown. 



Plectrophanes, 7* 

 zi. Hind claw not specially elongated. 

 J. Bend of wing with chestnut ; crown and breast streaked ; tail shorter 

 than wings. ........ Pocecetes, lo- 



jj. No chestnut on wing ; breast unstreaked ; head with black, white 

 and chestnut; tail nearly as long as wings. . Chondestes, 12. 



hh. Tail feathers rigid, acute, almost scansorial; small, streaked marsh spar- 

 rows, with yellow-edged wings. . . . Amniodromus, il. 



hhh. Tail feathers more or less rounded and soft at the end ; none of thera 

 white. 

 k. Wings decidedly longer than tail. 



/. With crimson or clear (not rusty) red ; a ruff at base of bill. 



tn. Crown crimson ; throat dusky. .... Aegioihus , 5, 



mm. Crown, chin, ihroat, and often whole plumage washed with red.. 



Female of Carpodacus, 3.- 

 //. With definite yellow somewhere. 



n. Bases and edges of quills and tail feathers yellow ; bill acute. 



Cluysoniitris, 6» 

 nn. Rump sulphur yellow ; bill with a small ruff. . Aegiotlms, 5. 



nnn. Edge of wing and superciliary line, or spot, at least yellow or 

 yellowish ; no ruff. 

 o. Breast yellow; throat patch or streaks black, bill bluish. 



Euspiza, 18.. 



00. Breast buffy or streaked ; wings less than 2^ ; tail feathers 



narrow. ....... Ammodromus , II. 



000. Breast streaked ; wings more than 2^ ; secondaries nearly as 

 long as primaries. ..... Passerculus, 9. 



