200 Genera of Humming Birds. 



to their base. Maxilla black, mandible black with a slight 

 indication of flesh-colour at the base. Feet black. 



Length of wing, 2jLin. Tail, \. Culmen, yV- "Elliot loc cit." 



This species is easily distinguished from all the others by 



its black bill, differently coloured abdomen, and undertail- 



coverts. 



It was dedicated by Mr. Elliot to the well-known American 



Ornithologist, Mr. George N. Lawrence. 



The type is in the American Museum of Natural History of 

 New York. 



287. Amazilia viridigaster, Bourc, Rev. Zool., 1843, p. 105. 



Hylocharis viridigaster, Bon., Consp. Gen. Av., 1850, 

 vol. i., p. 74. 



Saiicerottia viridiventris, Reich., Aufz. der Col., 1853, P- 8- 



Hemitliylaca viridiventris, Cab. and Hein., Mus. Hein., 

 i860, t. iii., p. 38. 



PyrrJwpJiaena viridigaster, Gould, Int. Troch, 1861, p. 159. 



Aria)ia viridigaster, Muls., Hist. Nat. Ois. Mou., 1874, 

 t. i., p. 320. 



Green bellied Aniasili, Gould, Mon. Troch., vol. v., p. 314. 



I'Ariane a ventre vert, Muls., Hist. Nat. Ois. Mou., 1874, 

 t.i., p. 321. 



Habitat. — Columbia. 



Male. — Forehead metallic gfreen. Neck and back shinine 

 green. Lower part of back and rump, grayish bronzy-brown, 

 passing into purple on the uppertail-coverts. Tail shining 

 violet with blue reflections. Underside metallic grass-green, 

 passing into smoky-bro\\n on lower part of abdomen. Thigh 

 and tuft on anal region white. Undertail-coverts pale green- 

 ish-bronze, margined with light buff on some specimens, on 

 others margined with white. Wings purplish. Maxilla black. 

 Mandible flesh colour with black tip. 



Total length, 3^in. Wing, 2\. Tail, i^. Culmen, f. 



Female. — Upperside like the male, but less bright. Flanks 

 and abdomen smoky-brown, washed with green. Rufous tips 

 on lateral rectrices. 



Bourcier's type is in my collection. 



This species was discovered in Columbia, by Mr. Rieffer. 



