THE HUMMING BIRDS. 877 



The species of Lampomis are about ten in number (including sub- 

 species), and belong chiefly to the West Indies and the Atlantic coast 

 district of tropical America; four of them, L. dominiciis (Linn.), L. vir- 

 idis (Vieill.), L. mango (Linn.), and L. ellioti Cory, are restricted to the 

 West Indies; the same number are continental; one which is merely 

 an insular race of a continental species is confined to the Caribbean 

 island of Old Providence, while one (L. calosoma Elliot) is of unknown 

 habitat. 



The Central American forms may be distinguished by the following 

 characters : 



Common characters. — Adult males bronze- green above; tail (except 

 middle feathers) bright chestnut-purple, glossed with violet-purple, 

 the feathers margined terminally with blue-black ; lower parts greenish, 

 with or without a broad black throat-stripe. Adult females with lower 

 parts mainly white, but with a median stripe (broadest on throat) of 

 black or green; tail-feathers (except middle pair) bluish or greenish 

 black termially or subterminally, their tips often white. 



a 1 . Throat-stripe opaque velvety black. 

 b l . Black of throat continued backward to belly. Hab., Panama to Brazil. 



L. nigricollis (Vieill.). Blaclc-ihroated Humming Bird (Page 377.) 

 6 3 . Black of throat not extending beyond chest. 

 c 1 . Bill longer (culmen 0.90 or more). Hab., Southern Mexico to Costa Rica. 



L. prevosli (Less.). PrevosVs Humming Bird.* 

 c 2 . Bill shorter (culmen, 0.78). Hab., Old Providence Island, Caribbean Sea. 



L. prevosli hendersoni (Cory). Henderson's Humming Bird.] 

 a 2 . Throat-stripe (female) or whole throat (male) brilliant green. Hab., Veragua. 



L. veraguensis Gould. Veragua Humming Bird.X 



The first of the above-characterized species has been included in sev- 

 eral works on North American birds, on the strength of a specimen 

 that was given to Mr. Audubon by Dr. Bachmau, who received it from 

 their " mutual friend, Dr. Strobel," who claimed to have obtained it at 

 Key West, Florida. If the specimen was really obtained at Key West, 

 its occurrence 1 here must be considered as purely accidental, since it 

 is not even found in the West Indies, nor along the Central American 

 coast, but is a South American bird, with the Isthmus of Panama as 

 its normal northern limit. 



Black-throated Mango Humming Bird. Lampomis nigricollis (Vieill.). 



Trochilus nigricollis Vieill., Nouv. Diet. Hist. Nat., vn, 1817, 349. 



Lampomis nigricollis von Berlepsch, J. f. O., 1884, 309. 

 Trochilus mango Aud., Orn. Biog., II, 1834, 480, pi. 184 ; B. Am., iv, 1842, 186, pi. 251 

 (not of Linnaeus). 

 Lampomis mango Gould, Mon. Troch., pt. xn, 1856, pi. 12; vol. n, 1861, pi. 74. — 

 B. B. and R., Hist. N. Am. B., n, 1874, 440. 



* Trochilus prevosli Less., Hist. Nat. Col., 1831, 87, pi. 24. — Lampomis prevosti 

 Gray, Gen. B., i.,108. 



\ Lampomis hendersoni Cory, The Auk, iv, July, 1887, 177. 



X Lampomis veraguensis Gould, Mon. Troch., pt. xv, May, 1858, pi. 9; vol. n, 1861, 

 pi. 76. 



