KEY TO THE GENERA. 
(h5) Conspicuously streaked below; crown plain, or with 2 black stripes, . . .. .. . . SEIURUS 
(h5) No streaks below; b. at least }inch long; 4 black stripes on head, or none,. . . HELMITHERUS 
—not inch long; wg.> 2% in.; crown plain or with black, . . . OPORORNIS 
—<2}in.; crown plain, or with bright spot, HELMINTHOPHAGA 
(h®*) Rictal bristles not evident; b.at least } inch long; whole hd. and neck rich yellow, PROTONOTARIA 
bill< fin. long; whole head and neck not yellow, HELMINTHOPHAGA 
(h*) Rictal bristles evident; hind toe much>its claw. Length underSinches, .... . PARULA 
—little if any longer thanitsclaw, .... . . . . DENDROECA 
(i) Length Zess than 5 in., wing and tail 2 in. or less, tailfeathers acute, . . .. . . . . SPERMOPHILA 
(i) Hind claw slightly curved, twice as long as middleclaw, .. . «+ « « « »« PLECTROPHANES 
(i) Feathers of crown bristle-tipped. Streaked: below yellow, with black hore patch, . . STURNELLA 
(i) Longest secondary nearly = primary in closed wgs. Black, with white wing patch, . CALAMOSPIZA 
(i) Conspicuously crested. Red the prevailing color. Bill reddish, face black, . . . . . CARDINALIS 
—not reddish, face not black, . PYRRHULOXIA 
(i) Tail-feathers acute. Black, nape buff, 7; or streaked yell’sh-brn., 9; wg.>3 inches, . DOLICHONYX 
— Small streaked marsh-sparrows, wg. <3 inches, its edge yell., . AMMODROMUS 
(i) Colors greenish and white, with yell. on edge of wing; —rufous head-stripes, . . . . EMBERNAGRA 
—crown chestnut, breast ashy 
(i) Length about 8 in.; ¢#2.>wgs. Plain brown, &c., or black, white and chestnut, - » PIPIZO 
(i) Inner claw reaching at least 4 way to tip of 3cl. Black, white and chestnut, j 
—BIk. (or brn.) hd. yellow; > 8 long, XANTHOCEPHALUS 
— Spotted and streaked; <8long, . . . PASSERELLA 
(i) Birds with none of the foregoing combinations of chars.— Bill with a ruff of antrorse bristly seathers. 
— Bill without ruff; nostrils exposed. (1) 
(k) Length—8 or more. Jed, or gray with brownish yellow onheadandrump, .. . . . . PINICOLA 
—under 8. White, with blk. onwgs. and tl.; or washed with clear brown, . PLECTROPHANES 
— Bluish-gray, below reddish-gray, crown, face, wgs. &tl., blk. . . PYRRHULA 
— Reddish-brown, blk.-streaked, crown ashy, throat blk. Imported, . PASSER 
— Unstreaked, chocolate-brown, rosy-tinted, hd. with blk. and ash, LEUCOSTICTE 
— Streaked: no yell., crown crimson, face and throat dusky, . . . AEGIOTHUS 
— Streaked: no yell.; no red; or else crown, and throat too, red, . CARPODACUS 
—Streaked or not: with some yellow, buf{nored, . .. . . . CHRYSOMITRIS 
(1) Species at least over 7 inches long. (m) 
(1) Species at most not over 7 inches long; plumage nowhere decidedly spotted or streaked. (n) 
90 
77 
(k) 
56 
63 
57 
76 
60 
61 
58 
62 
— somewhere or everywhere spotted or streaked. (0) 
(with head and neck rich brown, ... . . . . MOLOTHRUS 
(m) Bill jet-black ; plumage glossy blk., | with head, neck and breast yellow, . . . . XANTHOCEPHALUS 
(plumage of 9 plain brown) * 4 with head black, bend of wing red, . . . . . . . AGELHUS 
P B P | with no red or yell.; tailrounded,< wg., . . SCOLECOPHAGUS 
L — graduated, =or Se 5 « « QUISCALUS 
(m) Bill dark horn-blue, very acute; plumage black, with orange, yellow, or white, 
—plain olivaceous, ne 20. Gym HORE 
— obtuse; plumage blk., white and brown, tl. with wht. spots, . . GONIAPITEA 
(m) Bill greenish-yellow, as long as tarsus; wes. black, many secondaries white, . . . HESPERIPHONA 
(m) Bill not bluish nor greenish; tail with white spots; under wg.-coverts rosy or yellow, . GONIAPHEA 
—notrosy or yell.; yg. of, . PIPILO 
tail plain; entire plumage streaked. Qof..... .. . AGELEUS 
(n) Black and chestnut, or orange, ¢, or olive yellowish below, 2; b. acute, horn blue, or brn., ICTERUS 
(n) Dusky grayish-brown, nearly uniform; bill blackish, obtuse. Q of .... .. . . MOLOTHRUS 
(n) Blackish, or ashy, belly and 1 to 3 outer tail feathers white; billflesh color, ..... . . JUNCO 
(n) Throat and tail black, latter with white spots: head with 2 white stripes, . . + » «. POOSPIZA 
(n) Blue, with or without red, purplish, &c.; or greenish and yell.; or plain brown; ‘<6 long, CYANOSPIZA 
(n) Blue, with chestnut on wings, #; or plain brown, 9; >6long, ... A » . . GONIAPHEA 
(0) Wings> tail; breast more or less yellow; throat patch, or maxillary aoreuke biguke - .« » « HUSPIZA 
—not yell.; wg.<2% inches, its edge yellow; tail2in. orless,. . . COTURNICULUS 
> 2} in., — without yell.; lesser wg.-cov. chestnut, . . POOECETES 
with yell. or not; longest sec. nearly=prim..PASSERCULUS 
—without yell.; longest sec. much<primaries, CENTRONYX 
(0) Wings not> tail; tailforked. Lgth.5 to 6 in., wg. or tl. 2} to3,trs.¢toj, . . . . . . . SPIZELLA 
—graduated, tipped with wht.; head striped with chestnut and wht., CHONDESTES 
—little rounded, black, outer feather paleedged, ..... .. + . POOSPIZA 
—not black. Streaked below or crown chesinut, . . MELOSPIZA 
Not streaked below. Lgth.6ormore, ZONOTRICHIA 
Length under6in., . PEUCHA 
