BIEDS OF NORTH AND MIDDLE AMEEIOA. 35 



iniii. Sixth primary abruptl>- sliortei- than seventh; liallux 

 shorter than outer toe, its claw shorter than dis- 

 tanee from nostril to tip of maxilla; edge of wing 

 }'ellofl-; adult without black rictal streak or streaks 



on chest Coturniculns (p. 205) 



l-k. Outermost (ninth) primary shorter than seventh; tail 

 rounded or graduated, the lateral rectrices decidedly 



shorter than middle pair Ammodramus (p. 211) 



ii. Outermost (ninth) primary not longer than sixth ( usually shorter 



than fifth), or else (Ophelia, oart) wing-tip equal to length of 



middle toe without claw ; rectrices not narrow and acuminate. 



{Zonotrichi;e.) ' 



j. Outer toe reaching to middle of subterminal phalanx of middle 



toe, its claw reaching nearly if not quite to middle of middle 



claw Passerella (p. 384) 



jj. Outer toe not reaching to middle of subterminal phalanx of 



middle toe, its claw not reaching nearly to middle of middle 



claw. 



k. Outermost (ninth) primary longer than second; tail gradu- 



j ated for much less than length of middle toe without claw. 



I. Claw of hallux equal to the digit in length; lateral claws 



reaching decidely beyond base of middle claw; remiges 



and rectrices olive-green Oreospiza (p. 399) 



n. Claw of hallux shorter than the digit; lateral claws not 

 reaching beyond base of middle claw; remiges and 

 rectrices not olive-green, 

 m. Tail longer than distance from bend of wing to tip of 

 secondaries, or else (Jmico, part), lateral rectrices 

 largely white; middle rectrices not barred with black; 

 wing-tip longer than exposed culmen. 

 n. Head plain gray (lores darker); lateral rectrices largely 

 white, or else back streaked with dusky, and wing 

 without distinct light-colored markings. 



Jnnco (p. 271) 

 nn. Head not plain gray, or else {Spizella, part) lateral 

 rectrices without any white, and tail longer than 

 wing; lateral rectrices not largely (if with any) 

 white, or else head with white stripes. 

 0. Upper parts not grayish, or else (Spizella, part) the 

 back cinnamon-brown streaked with black, and 

 tail longer than wing. 

 p. Tarsus at least one-third as long as wing. 



q. No rufous collar around hindneck; no black on 

 pileum, except in form of narrow streaks; the 

 pileum sometimes plain chestnut. 



Melospiza (p. 349) 

 qq. A rufous collar around hindneck; pileum with 

 two broad lateral bands of black and a median 

 one of gray, never plain chestnut. 



Brachyspiza (p. 346) 

 pp. Tarsus decidedly less than one-third as long as 

 wing. 



1 1 am unable to characterize supergeneric divisions of this group. 



