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64 KEY TO THE GENERA. 
(E) Forehead covered with a broad horny plate; nostrils linear, trs. << 2in.long, . . . . GALLINUEA 243 
—nearly circular; trs.2 in. long,. . PORPHYRULA 244 
— feathered; first primary attenuate; bill straight, > hd., culm. grooved, . . . . SCOLOPAX 202 
—3 outer EES ies attenuate; bill same: tibiz feathered; trs. << 3t. . PHILOHELA 201 
— not attenuate; first primary much < second. (t) 
— =, or>, second. ™) 
(t) Length 2 feet or more: bill much > head, decurved; tibia half bare; trs, not << 3tel., . . . ARAMUS 239 
—<2 feet; bill> head, decurved; tibia little bare; trs.<3tel., . . .... . +. . . RALLUS 240 
— < head, straight: feet as before. Length 10inchesormore,. ... . . CREX 242 
—less than 10inches,. . . . PORZANA 241 
(a) Trs. evidently < 3tcl.; tibize naked below: bill about twice = head, culm. furrowed, . GALLINAGO 203 
— feathered; b. little > head, culm. unfurrowed, .. . . ARQUATELLA 210 
— about =, or>, 3tel.; trs. in front—reticulate, . . + . . APHRIZA 193 
scutellate, legs reddish; pill pubes < head . STREPSILAS 195 
legs dark. (v) 
(v) Bill slightly curved, much > hd.; tarsus evidently > middle toe and claw, . . . ANCYLOCHEILUS 209 
—=or barely > middle toe and claw, . . . . . . PELIDNA 208 
— straight, much < head. Primaries mottled with black, . . . .. .. . . . . TRYNGITES 220 + 
— about =, or > hd; tarsus much> middle toe andclaw,... . . . . . TRINGA 211 : 
— about = middle toe andclaw, .« . . . . ACTODROMAS 207 + 
B. (The hind toe not elevated.) 
1. TIBLA NAKED BELOW. (w) 
2. NOSTRILS OPENING BENEATH SOFT SWOLLEN MEMBRANE. (x)* 
3. BILL HOOKED AND FURNISHED WITH A CERE. (y) 
4. BIRDS WITHOUT THE ABOVE CHARACTERS. (2) i? 
(w) Middle claw simple; tarsus reticulate; bill flat, spoonshaped atend, . . 7 es s DATA EA 297, c 
— not flat, very stout, tapering, slam ved, . . TANTALUS 224 j 
— scutellate; bill grooved, curved; claws — straightish, . FALCINELLUS 225 
—cnrved; a9. s -« «)s EBB 226 
(w) Mid. claw pectinate; tail of 10 feathers; lower neck bare behind.—Length over 18 inches, BOTAURUS 237 
—Length under 18 inches, ARDETTA 238 
—12 feathers; lateral toes not more than 4 as long as tarsus, HYDRANASSA 233 
— more than } the tarsus. (w?) : Mi 
(w?) Tibiz bare 1 inch or less ; trs. > 8tcl.; billover 4 inch deep at base, . . NYCTHERODIUS 236 
— <3tel.; b. not thrice aslongashigh, . . . . NYCTIARDEA 235 7 
b. more than thrice as long as high, . . BuTrormeEs 234 : 
—2in.or more. Lgth.2 feet or less. Blue (or white), legs blk. and blue, FLORIDA 230 4 
White; legs black and yellow, GARZETTA 231 ‘s 
—3 feet or more. Bluish, ashy, brown, &., . . . . ARDEA 228 ; 
White; trs. << 7in. b. <6, . . HERODIAS 232 ? 
White; trs.>7in.b.>6, . . AUDUBONIA 229 ? 
. 
ts adalat 
(x) Tail-feathers — 12. Greenish; bird over 18 inches long,. . . Halas +» « « « ORTALIDA 176 
— 4, long, tapering, much graduated; oiveuriedbitall ‘apaes spose + + « ZENZDURA 169 : 
— 12; trs. fthn’d above; tail broad, rounded, much < wings, . . . . . . . COLUMBA 167 . 
— narrow, pointed, about = wings,. . . ECTOPISTES 168 7 ; 
trs. wholly naked, — reticulate, .. - soe 6 6 « ee « . STARNGENAS 175 et 
—scutellate in front; tail parataal se « « « SCARDAKELLA 173 
—rounded. (x?) 
(x?) Trs. about=3t., without claw; wing rounded, Ist primary <4th. . . . . . GEOTRYGON 174 
— evidently <3t.; wing pointed, and—under 4inches long, . . . . . CHAMAEPELIA 172 
—over 4; lores—naked, . . . . . MELOPELIA 171 
—feathered, . . . . . ZEN@DA 170 
* This membrane (not scale), which distinguishes the pigeons, shrinks in drying, when if may be recognized by its 
closing up the nostrils, or at least making them zrregular ; but if still in doubt, observe tarsi reticulate on sides and 
behind, and (generally) scutellaie in front. See fig. 11, b. 
