334 REPORT OF NATIONAL MUSEUM, 1890. 



The three species of Calypte may he distinguished by the following 

 characters : 



a 1 . Wing not less than 1.70; upper tail-coverts and middle tail-feathers bronze-green; 

 outer tail-feather of male much narrower than the next. 

 b l . Tail 1.15 or more (1.30-1.45 in the male) ; adult male with gorget and top of head 

 metallic purplish red; adult female dn\\ light brownish gray beneath. Hob.: 

 California, resident, a few migrating to Arizona and northern Mexico in win- 

 ter. C. anna (Less.). Anna's Humming Bird. (Page 334.) 

 & 2 . Tail not more than 1.10 (still shorter in female); adult male with gorget and 

 top of head metallic violet; adult female with under parts white. Hab.: West- 

 ern Mexico, Arizona, Lower California, and southern California. 



C. costai (Bourc). Costa's Humming Bird. (Page 337.) 



a 2 . Wing not more than 1.15; upper tail-coverts and middle tail-feathers metallic 

 blue or greenish-blue ; outer tail-feather of male not narrower than the next. 

 Adult male with gorget and top of head metallic purplish red (as in C. anna) ; 

 adult female with anterior half of lower parts pale ash-gray, posterior half 

 white. Hab. : Cuba. C. helenw (Gundl.). Princess Helena's Humming Bird.* 



Anna's Humming Bird. Calypte anna (Less.). 



Ornismya anna LESS.,Ois. Mouch., 1829, 205, pi. 74. 



Trochilus anna JARD.,Nat. Libr. Humming B., I, 1833, 93, pi. 6. — Aud., Orn. 



Biog. v, 1839, 438, pi. 425 ; Synop. 1839, 170 ; B. Am. IV, 1842, 168, pi. 252. 

 Calypte annw Gould, Mon. Troch., pt. xi, 1856, pi. 5; vol. in, 1861, pi. 135. — 

 Coop. Orn. Cal. i, 1870, 358.— B. B. and R. 3 Hist, N, Am, B. u, 1874, 454, pi. 

 47, fig, 7. 

 Red-headed Humming Bird. 

 Anna's Calypte (Gould). 



Chupamirto de cabeza y cuello escarlata (D'Oca). 

 Le Calypte d' Auna (Mulsant and Verreaux). 

 Oiseau-Mouche Anna (Lesson). 



Eange. — California, resident in warmer portions; performs a partial 

 migration south through Arizona to table-lands of Mexico; south in 

 Lower California as far as Cerros Island. 



Sp. Char. — Adult male : Entire head (except occiput), including ruff, 

 brilliantly metallic purplish red ; length about 3.40-3.75, wing 1.90- 

 2.00, tail 1.30-145, exposed culmen 0.65-0.70. Adult female : bronze- 

 green above, including top of head, the latter sometimes dull grayish 

 brown, with little if any metallic gloss ; throat pale gray or grayish 

 white, the feathers with darker central spots, often mixed with spots of 

 metallic crimson; length 3.80-4.15, wing 2.00-2.05, tail 1.15-1.30, 

 exposed culmen 0.70-0.75. 



Adult male (No. 84123, Marin County, California. February 15, 1877 ; 

 C. A. Allen) : Entire head (except occiput), including gorget, with its 

 elongated latero-posterior feathers, forehead, crown, and post-ocular 

 region, rich, brilliant, metallic purplish red, or rose-red, with more 

 purplish, and in certain lights somewhat golden or bronzy, reflections; 

 occiput, hind neck, back, scapulars, wing-coverts, rump, upper tail- 

 coverts, and middle pair of fail-feathers metallic bronze-green ; remiges 



* Orthorhynchus helenw Gundl. Lemb., Aves de la Isla de Cuba, 1850, 70, pi. 10, 

 fig. 2.— Calypte helenw Gould, Mon. Troch. in, pi. 136. 



