THE HUMMING BIRDS. 369 



a 2 . Tail mainly blackish; posterior lower parts dull whitish, mixed with grayish 

 brown and greenish. Adult male with forehead and chin deep rich blue; 

 middle tail-feather entirely metallic green or bronze, the others tipped with 

 green or brouzy. Adult female : Lower parts dull light grayish, or grayish 

 white, more or less spotted with green, the sides almost continuously of this 

 color; middle tail-feathers entirely green or brouzy, the others black, the two 

 or three outer ones tipped with dull grayish. Hab. Highlands of Guatemala 

 and Mexico. B. leucotis (Vieill.). White-eared Humming Bird* 



Xantus's Humming Bird. Basilinna xanlusi (Lawr.), 



(Plate xliv.) 



Amazilia zantusi Lawr., Ann. Lye. Nat. Hist. N. Y., vn, April, 1860, 109 (female). 

 Heliopwdica xantusi Gould, Mon. Troch., pt. xxi, 18151, pi. 2; vol. n, 1861, pi. 

 65.— Coop., Orn. Gal., i, 1870, 365.— B. B. and R., Hist. N. Am. B., n, 1874, 167, 

 pi. 47, fig. 3. 

 Basilinna xanthusi Elliot, Class, and Synop. Troch., 1879, 227. 

 Basilinna xantusi Ridgw., Pr. U. S. Nat. Mus., in, 1880, 6, 188. 

 Heliopaidica castaneocauda Lawr., Ann. Lye. Nat. Hist. N. Y., vn, Apr., 1860, 145 



(male).— Elliot, Illustr. B. N. Am.,i, 1869, p.xxn. 

 Le Coeligene de Xanthus (Mulsant aud Verreaux). 

 Cbupamirto de pico coral y vieutre castaho (D'Oca). 



Range. — Cape district of Lower California. 



Sp. Char. — Tail mainly chestnut ; posterior under parts pale cinna- 

 mon-rufous. Adult male with forehead and chin opaque black or dull 

 blue-black, throat and chest brilliant metallic yellowish green, aud a 

 broad, white stripe behind eye; length (skins), about 3.40-3.60 ;t wing, 

 1.95-2.15; tail, 1.35-1.40; exposed culmen, 0.G5-0.70. Adult female with- 

 out any black about head, the white post-ocular stripe less distinct, aud 

 the entire under parts light cinnamon rufous ; length (skins), about 

 3.10-3.50;| wing, 1.85-2.00; tail, 1.15-1.25; exposed culmen, 0.60-0.70. 



Adult male (No. 117767, Miraflores, Lower California, November 21), 

 1850; J. Xantus) : § Forehead slightly glossy blue-black, changing grad- 

 ually into duller blackish on the crown ; chin and a broad stripe thence 

 beneath eye to ear-coverts opaque, velvety black ; lores dull grayish 

 white; behind the eye a distinct stripe of white, changing into light 

 cinnamon grayish on side of neck; occiput, hind-neck, wing-coverts, 

 scapulars, and back, metallic bronze-green ; upper tail-coverts bronze- 

 green mixed with rusty ; tail chestnut, faintly glossed with purple on 

 under surface, the middle pair of feathers broadly margined with metal- 

 lic bronze-green ; remiges dusky brownish slate, very faintly glossed 

 with purplish. Throat aud upper part of chest brilliant metallic yel- 

 lowish emerald-green or Paris green; feathers of lower chest and breast 



* Trochilus leucotis Vieill., Nouv. Dict.,ed. 2, xxii, 1818,428. Basilinna leucotis 

 Reich., Aufz. der Colih., 1853, 13. 

 t Length of a specimen before skinning said to be 4.75. 

 t Length before skinning said to be 3.30-3.65. 

 § Type of Heliopwdica castaneocauda, Lawr, 

 H. Mis. 129, pt. 2^—24 



