TROCHILUS. 315 



with rufous, the outer tail-feather wholly dusky, 

 the belly white, the sides and flanks green. Adult 

 female unknown. Length 3.25, wing 1.75, tail 1.40, 

 exposed culmen .65. Hab. Mexico (Bolanos) and 

 southern California (San Francisco). 

 — . T. floresii (Gould). Floresi's Hummingbird.^ 

 c\ Exposed culmen not more than .50 ; outer tail-feathers broadly tipped 

 with white in both sexes. (Adult males bronzy green or bronzy 

 above, the middle tail-feathers broadly edged with rufous on inner 

 web, the other tail-feathers with basal half rufous, then purplish 

 black, the two or three outermost broadly tipped with white ; gor- 

 get rich metallic purplish; chest and other median lower parts 

 white, the sides and flanks rufous, tinged or spotted with greenish 

 or bronzy. Adult females similar to males, but throat dull white, 

 spotted with dull greenish or bronzy ; under tail-coverts pale ru- 

 fous ; four middle tail-feathers without rufous edgings.) (Subgenus 

 Atthis Eeichenbach.) 

 (f . Adult male : Outer quill narrow, abruptly attenuated at tip ; gor- 

 get brilliant metallic reddish violet, with decided violet tints 

 in certain lights ; basal half (approximatelj^) of tail rufous, ter- 

 minal half black, the three outer feathers broadly tipped with 

 white ; chest and middle line of belly white, sides and flanks 

 light rufous, tinged with green. Adult female : Whole throat 

 whitish, but otherwise similar to the male. Length about 

 2.75, wing 1.30-1.50, tail .95-1.10, culmen .48-.50. Hab. 



Eastern Mexico and southern Texas 435. T. heloisa 



(Less. & Delattr.). Heloise's Hummingbird. 



d\ Adult male with outer quill broad, not attenuated at tip ; gorget 



metallic reddish purple, without violet tints; otherwise much 



like T. heloisa; wing 1.35, tail 1.00-1.05, culmen .38-.40. Hab. 



Highlands of Guatemala. 



T. ellioti KiDGW. Elliot's Hummingbird.^ 



b\ Middle tail-feathers broader near end than toward base. (Subgenus Stellula 



Gould.) 



Adult male : Feathers of gorget narrow, elongated, pure white basally, 

 metallic purplish terminally ; tail-feathers plain dusky, edged with 

 rufous toward base; sides and flanks tinged with rufous; length 

 about 2.75-3.00. wing 1.50-1.60, tail .90-1.10, exposed culmen .55- 

 .58. Adult female: Tail more rounded than in male, feathers dull 

 green basally and tipped with white (except middle pair) ; throat 



1 Selasphorus floreau GotJLD, Mon. Troch. pt. xxiii. Sept. 1, 1861 (vol. iii. pi. 139). 



This is possibly a hybrid between T. anna and T. rufus. The capture of the San Francisco specimen (in 

 May, 1885) is recorded, by Mr. Walter E. Bryant, in "Forest and Stream," vol. xxvi. No. 22, July 24, 1886, 



p. 426. 



2 Atthis ellioti RiDGW., Proc. U. S. Nat. Mus. i. July 1, 1878, 9. 



