TR0CII1LID.E — THE HUMMING-BIRDS — STELLULA. 363 



sence of green on the tail seems a good character. But one species is known 

 of the genus. 



CalotJiomx is a closely allied genus, in -svhich the tail is considerably- 

 longer. One species, C. cjjanoiwfjon, will probably be yet detected in New 

 Mexico. (Baird.) 



Stellula calliope, Gould, 

 THE CALLIOPE HTJMMING-BIBD. 



Trochilus calliope, Godld, Pr. Z. S. 1847, 11. (Me.xico.) — Calulhomx calliope. Gray, Genera, 

 I. 100. — BoNAPAiiTE, licv. Mag. Zool. 1854, 257. — Gould, Mon. Trouli. III.; pi. 142. 

 — Xantus, Hiil. Ac. 1859, 190. — Slellida calliope, Gould, Iiitrod. Trocli. 1861, 90. 



Sp. CH.\n. Male. Above, e.xecpt on tail, golden gi'ccn ; beneath ivhite, the sides 

 glossed with green ; the flanks somewhat with rusty ; orissum pure white. Throat feathers 

 pure white at base, terminal half violet-red, as is Allliis Hcloisw ; the sides of neck pure 

 white. Tail feathers brown, edge<l at base, especially on inner webs (but inconspicuously) 

 with rufous ; the ends paler as it' faded ; central feathers like the rest. Under mandible 

 yellow. Length, 2.75 ; wing, 1 GO ; tail, 1.00 ; bill above to base of feathers, 0.55. 



Female, without the metallic gorget (replaced by a few dusky specks), and the throat 



feathers not elongated ; no green on side, and more tinged with rufous beneath. A white 

 crescent under the eye. Tail more rounded and less emarginate than in the male ; the 

 outer three feathers green at base, then black, and tipped with white ; the fourth green 

 and black ; the fifth green, with a dnsky shade at end ; all e.\ce])t central, edged internally 

 at base with rufous. The under maudiljle is paler at base than elsewhere, but not yellow- 

 ish-white as in the male. 



Ilah. Mountains of Washington, Oregon, California, to Northern Me.xico. 



The male l>ird is easily distinguished from other Xorth American species 

 by its very small size, the snowy-wliite bases of tlie elongated loose throat 

 feathers, and liy the shape of tlie tail, as also the absence, at least in the 

 only male before me, of decided metallic green on the central tail feathers. 

 The females resemble those of A. Hcloisw most closely, but have longer bills 

 and wings, broader tail feathers, and their rufous confined to the edges, in- 

 stead of crossing the entire basal portion. Sdasphorus idatijccrcus and riifus 

 are much larger, and have tails marked more as in ^. Hdoiscc. (Baird.) 



