Hummingbirds 



426. Rivoli Huminingbipd (Eugenes JUlgens). L. 

 5.1. A smali white spot behiHd eye, /id. ^, Crown 

 purple, throat bright green, baclc bronzy green; tail 

 somewhat more bronzy. Ad. 9. Above bronzy green, 

 all but central tail-feathers with blackish ends and 

 narrow grayish tips; below grayish, all but throat 

 feathers gresn centrally. Yng. 3^. Throat with more or 

 less green, belly and above more bronzy than in ? . 



Range,— Nlcaraugua, north In mountains to mountains of southeast- 

 am Arizona.and southwest New Mexico; winters south of United 

 Sutes. 



429. Black-chinned Hummingbird {Trochilus alex- 

 andri). L. 3.5; W. t.7. Ad. $'. Chin and upper 

 throat black, lower throat amethyst; tail forked, 

 feathers pointed. Ad. 9. Throat n^ayish white; 

 rfiw &M0'; tail feathers more rounded, three outer ones 

 tipped with white. Yng. (S'- Similar to $,t)ut throat 

 with dusky spots. 



RHnee.— Western United States; breeds from San Anlonto, Texas. 

 New Mexico. Arizona, anrt Cullfornla north to Montana and British 

 Columbia: rare on ParitJr roast north of sniuhern California; winters 

 south Of United States. 



430. Cosfa Hummingbird [Calypte costx'). L. 3.1. 

 No rusty in plumage. Ad. ^. Crown, throat and 

 lengthened neck-feathers amethyst, hack dull green. 

 Ad. 9. Below grayish white; above grayish green; 

 outer tail-feathers £^?-iy iit base, then black and at tip 

 white. Yng. cf. Similar to $, but throat usually with 

 some amethyst spots; tip of outer tail-feather grayish. 



Range.— Northwestern Mexico; breeds tiofth throughout Lower 

 California, to southern Califcmia, northern Nevq4a, southwestern 

 Utah, and southwestern New Mexico; winters from Mexican l:order 

 southward. 



437. Lucifer Humringbird {Calothorax lucifir.) 

 L. 3.6; B. .8, Ad. (f. Throat purplish pink, feathers 

 at its side much lengthened; tail leathers very narrow, 

 the outer ones less than .05 in. wide on end half. 

 Ad. 9. Below nearly v.niform rustj> huff, above bronzy 

 green ; tail-feathers white-tipped. 



Rant*.— "From western Texas and southern Arizona south to ih« 

 city o* Mexico and Puebla." (Bailey.) 



440. Xantus Hummingbird {Bastlinna xantusi)- 

 L. 3.6. A white streak behind eye. Ad. cf . Chin, 

 forehead and checks Hack; throat green; tail rusty 

 brown. Ad. 9. Below uniform rusty, above green; 

 outer tail-feathers rusty orown. 



Ranee. — Lower California, nctli to Lat. 29* ; most common In 

 Cape Region. 



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