Hummingbirds. 



426. Rivoli Hummingbird {Eugenes fulgens). L. 

 5.1. A small white spot behind eye. Ad. cf. Crown 

 purple, throat bright green, back 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 green centrally. Yng. c> • Throat with more or 

 less green, belly and above more bronzy than in 9* 



Range. — Nicaraugua, north in mountains to mountains of southeast- 

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

 States. 



429. Black-chinned Hummingbird (Trochilus alex- 

 andri). L. 3.5; W. 1.7. Ad. <J. Chin and upper 

 throat black, lower throat amethyst; tail forked, 

 feathers pointed. Ad. 9- Throat grayish white; 

 chin buffy; tail feathers more rounded, three outer ones 

 tipped with white. Yng. rf. Similar to ?, but throat 

 with dusky spots. 



Range.— Western United States; breeds from San Antonio, Texas, 

 New Mexico, Arizona, and California north to Montana and British 

 Columbia; rare on Pacific coast north of southern California; winters 

 south of United States. 



430. Costa Hummingbird (Calypte costce). L. 3.1. 

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

 lengthened neck-feathers amethyst, back dull green. 

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

 outer tail-feathers gray at base, then black and at tip 

 white. Yng. <$. Similar to 9, but throat usually with 

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



Range.— Northwestern Mexico; breeds north throughout Lower 

 California, to southern California, northern Nevada, southwestern 

 Utah, and southwestern New Mexico; winters from Mexican border 

 southward. 



437. Lucifer Hummingbird {Calothorax lucifer.) 

 L. 3.6; B. .8. Ad. J*. Throat purplish pink, feathers 

 at its side much lengthened; tail feathers very narrow, 

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

 Ad. 9- Below nearly uniform rusty buff, above bronzy 

 green; tail-feathers white-tipped. 



Range.— "From western Texas and southern Arizona south to the 

 city of Mexico and Puebla." (Bailey.) 



440. Xantus Hummingbird {Basilinna xantusi). 

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

 forehead and cheeks black; throat green; tail rusty 

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

 outer tail-feathers rusty brown. 



north to Lat. 29 c 



Range. — Lower California 

 Cape Region. 



most common in 



159 



