332 Genera of Hum minor Birds. 



along the sides of the neck and throat, and running from the 

 bill to the flanks. Undertail-coverts violet-brown or green. 

 Wings purplish-brown. Bill black. 



Total length, ^\\n. Wing, 2f. Tail, if. Culmen, \^. 



Female. — Upperside golden-green or dark green. Under- 

 side white with a black line from the throat to lower part of 

 abdomen. Flanks golden-green or dark green. Undertail- 

 coverts bronzy-green edged with white. Lateral rectrices 

 tipped with white. 



Same size as the male. 



This species varies very much in its colouration, according 

 to age and localities, but it is impossible to separate them, as 

 these variations of plumage exist in specimens from the same 

 locality. 



I have in my collection one specimen from Brazil, which 

 I have mentioned in the Proceedings of the Zoological Society, 

 1879, p. 178, as a variety of nigricollis, and described in 

 the Humming Bird, vol. i., 1891, page 25, under the name of 

 L. violicauda. It is as follows : — 



Male. — Upperside purplish-black, lighter on the rump. 

 Tail-coverts and median rectrices black. Laterals metallic 

 reddish-purple with the edges and tips blackish-blue. Under- 

 side black, paler on flanks. A line of lustrous dark, with 

 greenish tinge, from the bill to the flanks, on sides of breast. 

 Undertail coverts purplish -black. Wings brownish-black. 

 Feet and bill black. 



Total length, 4fin. Wing, 2|. Tail, if. Culmen, -i-|. 



It is probably a melanism of L. nigricollis. 



455. Lampornis prevosti, Less. Nat. Hist. Col., 1831, p. 87. 



Polytmiis prevosti, Gray, Gen. Birds, vol. i., p. 108. 



Autracothorax prevosti, Reich. Aufz. der Colib., 1853, P- 1 1- 



Lampornis prevosti thalassinus, Ridgw. Proc. U.S. Mus., 

 t. viii., p. 573. 



Prevost's mango, Gould, Mon. Troch., vol. ii., p. 75. 



Le La7npornis de Prevost, Muls., Hist. Nat. Ois. Mou., 

 1876, vol. i., p. 161. 



Lamporttis Hendersoni, Cory Auk., 1887, p. 336. 



