34 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



iiim. Bill thicker (depth at haso more than half length of 



commisgiiire) Haplospiza ( p. 520) 



//. Bill sliorter (distance from nostril to tip of maxilla less 

 than half length of tarsus) or else^ jilumage yellow. 

 VI. Outermost (ninth) primary longer than sixth; wing-tip 

 equal to or longer than tarsus; plumage j'cllow or 



yellowish Sicalis ( ]). 521 ) 



mm. Outermost (ninth) i^rimary shorter than sixth; wing- 

 tip much shorter tlian tarsus; plumage not yellow 

 or yellowish. 

 01. Culmen decidedly convex; adult males with chestnut 



or rufous on throat, etc Pyrrhulagra (p. 547) 



»;**. Culmen straight or nearly so; adult males without 

 chestnut on throat or elsewhere. 

 0. Wing more than 63.50 mm.; adult male entirely 



black, with whitish feet Melanospiza (p. 544) 



00. Wing less than 63.50 mm. ; adult males not entirely 



black, or else the color glossy blue-black and the 



feet dusky. 



p. Tail even or very slightly rounded; adult males not 



glossy blue-black; females and young .not 



streaked Euetheia (p. 529) 



pp. Tail much rounded or graduated; adult males 

 glossy blue-black; females and young con- 

 spicuously streaked Volatinia (p. 525) 



/(//. Species of mostly variegated plumage, without any bright colors 

 ( exceiit sometimes yellow on under parts or edge of wing) ; often 

 streaked, the young nearly always; if plumage of adult male, 

 largely black and chestnut, the tail longer than wing. ^ 

 '/. Outermost (ninth) primary longer than sixth, or else {Aminodra- 

 mus, jiart) rectrices narrow and acuminate. 

 j. Wing more than 82.55 mm.; adult male (in summer) black 

 with white wing-patch. ( Calamosjyiza'. ) . Calamospiza ' (p. 167) 

 jj. Wing not more than 82.55 mm.; adult male never black nor 

 with Avhite wing-patch. {Ammodrantl.) 

 I.-. Outermost (ninth) primary longest or equal to longest; tail 

 emarginate, M'ith lateral rectrices longer than median jiair. 

 /. Hallux little if any longer than inner toe; wing exceeding 

 tail by decidedly more than length of tarsus; rectrices 



broader, less acuminate Passerculus (p. 187) 



//. Hallux decidedly longer than inner toe; Aving exceeding 

 tail by very little more than length of tai'sus; rectrices 

 narrower, more acuminate, the lateral jiair relatively 

 shorter. 

 111. Sixth primary not abruptly shorter than seventh; hal- 

 lux longer than outer toe, its claw longer than distance 

 from nostril to tip of maxilla; edge of wing white; 

 adult with a black rictal streak and with chest streaked 

 with black Centronyx (p. 202) 



^Sicalis, part; i. e., S. coZ«?n6("oj(« Cabanis, which, notwithstanding its close resem- 

 blai]cc in coloration to the typical species, differs so much in form that it should 

 probably be separated generically. 



^A heterogeneous assemblage, comprising several minor groups. As to above 

 unsatisfactory diagnosis, see footnote on page 33. 



■'This genus is rather an isolated form, and 1 do not knoM* where it really belong.s. 

 It seems to show jjointsof relationship to Rhyncliophanei}, Spiza, and Chondestes. 



