BIRDS OF NORTH AND MIDDLE AMERICA. 367 



outermost primary longest. Tail more than half as long as wing, 

 slightly double-rounded, the rectrices broad, rounded at tip. 



Coloration. — Above, including tail, plain olivaceous glossed with 

 bronze or bronze-green; beneath plain brownish gray; a dusky 

 auricular or sul)orbital spot; sexes essentially alike, but female with 

 a broad subterminal area of black and terminal area of gray or 

 brown on lateral rectrices. 



Range. — Mexican plateau. (Monotypic.) 



Authorities have disagreed widely as to the relationship of this form, 

 Elliot placing it near Dolerom.yia { = Leucijrpus) (a South American 

 genus) and placing by far the greater numl)er of genera between it and 

 Cynantlius Q'lache"), while Ilartert unites it with the latter. I 

 agree with Hartert in considering it most closely related to the latter, 

 but would separate it generically on account of the dilferences men- 

 tioned in the above diagnosis. 



PHi5;OPTILA SORDIDA (Gould). 



DUSKY HUMMING BIRD. 



Adult male. — Above dull metallic bronze-green or greenish bronze, 

 usually much didler (sometimes didl brownish gray or grayish 

 brown) on forehead and crown and on upper tail-coverts; tail dull 

 greenish l)ronze or grayish brown glossed with greenish bronze, the 

 rectrices dusky basally, this occupying more than basal half of 

 lateral rectrix; remiges purplish (Uisky, the outermost primary nar- 

 rowly edged with pale gray or grayish white; a pale gray or grayish 

 white })ostocular spot, and l)eneath this ;i })oorly defined dusky 

 area extending to l^eneath eye; under parts deej) sooty gray (nearly 

 mouse gray), deepest on throat, the feathers of which usually have 

 a darker subterminal (concealed) area; femoral tufts and tuft on 

 each side of rump white; shorter under tail-coverts brownish gray, 

 the longer ones mostly buiTy; bill bi-ownish (reddish in life), passing 

 into dusky terminally (more or less extensively); iris dark brown; 

 feet dusky; length (skins), 98-106 (101); wing, 56.5-57 (56.8); tail, 

 35-35.5 (35.3); culmen, 27.5-29 (28.3).^^ 



Adult female. — Similar to the adult male l)ut four lateral rectrices 

 (on each side) bronzy green (duller and more grayish on lateral 

 rectrix) crossed by a broad subterminal band of dull blue-blackish 

 and tipped with pale brownish gray or grayish brown (most broadly 

 on outermost rectrix); remiges paler and less purplish dusky, and 

 gray of under parts averaging slightly paler than in adult male; 

 length (skins), 101-103 (102); wing, 55; tail, 31.5-32 (31.7); cul- 

 men, 29.^ 



« Three speciineuH. b Two specimens. 



