BIRDS OF NORTH AND MIDDLE AMERICA. 809 
mm. Tail more strongly rounded or graduated, at least some 
of the rectrices pointed or contracted terminally in 
adult males; adult males without white tips to 
lateral rectrices, their basal half not rufous or else 
tail mostly rufous..........-. Selasphorus (p. 595). 
il, Plumage without any rufous; tail forked in males, double- 
rounded in females. 
m. Inner primaries normal; adult males with pileum bril- 
liant metallic purplish red or violet, like throat; the 
lateral feathers of the latter elongated; lateral rec- 
trices not pointed.................. Calypte (p. 618). 
mm. Inner primaries with a small subterminal tooth on 
inner web; adult males with inner primaries abruptly 
reduced in size; pileum dull or dusky metallic green; 
feathers of sides of throat not elongated; lateral rec- 
trices pointed.-...........--. Archilochus (p. 627). 
kk. Lateral rectrices conspicuously longer than middle pair; 
adult males with tail at least three-fourths as long as wing, 
forked for more than half its length. 
i. A conspicuous white or buffy spot on each side of rump; 
adult male with lateral rectrices broadly banded with 
white, adult female wholly light cinnamon-rufous below. 
Tilmatura (p. 637). 
il. No white or buffy spot on side of rump; adult males with- 
out white on lateral rectrices, adult females partly 
whitish below. 
m. Wing relatively larger, with outer primary not attenu- 
ated terminally; adult males with lateral rectrices 
broadly edged with rufous on inner webs; adult female 
with tail more than half as long as wing. 
Nesophlox (p. 639). 
mm. Wing relatively smaller, with outermost primary nar- 
rower and attenuated terminally; adult males with 
lateral rectrices wholly purplish dusky; adult fe- 
males with tail not more than half as long as wing. 
Calliphlox (extralimital).¢ 
jj. Bill distinctly decurved; exposed culmen more than half as 
long as wing (except in Calothoraz, part). 
&. Adult male with tail much longer than wing, forked for more 
than half its length, the lateral rectrices of uniform width 
throughout or slightly expanded terminally, with tip broadly 
rounded, and with lateral feathers of throat little if any 
elongated; adult female with tail nearly two-thirds as long 
AB SWING 27 sie retards = atresia SavsniNclaple's's's x's Doricha (p. 647). 
kk. Adult male with tail shorter than wing, forked for less than 
half its length, the lateral rectrices narrowing terminally 
and pointed or narrowly rounded, the lateral feathers of 
throat much elongated; adult female with tail but little 
more than half as long as wing...... Calothorax (p. 651). 
@ Calliphlox Boie, Isis, 1831, 544 (type, Trochilus amethystinus Gmelin).—Philodice 
Mulsant and Verreaux, Classif. Troch., 1865, 86 (type, Trochilus mitchellt Bourcier). 
Venezuela and Trinidéd to Brazil and Ecuadér. (Two species.) 
