BIRDS OF NORTH AND MIDDLE AMERICA. 309 



mm. Tail more strongly rounded or graduated, at least some 

 of the rec trices 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). 



II. 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). 



7nm. Inner primaries with a small subterminal tooth on 

 inner web; adult males with inner primaries abru])tly 

 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). 



II. 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 Calothorax, part). 

 k. 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 



as wing Doriclia (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 mitchclli Bourcier). 

 Venezuela and TrinidM to Brazil and Ecuad6r. (Two species.) 



