NORTH AMERICAN BIRDS. 
not very bril 
liant; wing 
about 2.50- 
3.20. 
Ceeligena. 
(Page 310.) 
P. Wing less than 2.25. 
Adult males with a brilliant 
gorget of metallic red 
or purple... Trochilus. 
(Page 310.) 
K. Feathering of forehead scarcely ex- 
tended beyond posterior end of 
nostrils, the scale over latter 
therefore for the greater part, 
or entirely, naked, and the bill 
very broad at base; wing about 
1.90-2.15. 
?. Tail blue-black in male, deeply 
emarginated, and with mid- 
dle feathers tipped with dull 
grayish ; in female shallowly 
emarginated, green basally, 
blue-black terminally, the 
outer feathers tipped with 
grayish white; adult males 
metallic green beneath, the 
throat bluish. 
Iache. (Page 319.) 
P. Tail not blue-black. 
m, Exposed culmen more than 
half as long as tail. 
mw, Tail rufous, or chest- 
nut, the feathers 
usually with dusky 
or bronzy terminal 
margins. 
Amazilia. 
(Page 316.) 
n. Tail dull greenish, 
with dusky sub- 
terminal band (ex- 
cept on middle 
feathers), the outer 
feathers broadly 
