Genera of Humming Birds. 303 



line under it white. Chin black. Throat metallic crimson. 

 Underside gray, washed with green on sides of breast, and 

 on flanks. A line of white from the centre of breast to lower 

 part of abdomen, and vent white. A tuft of white feathers 

 on flanks. Undertail-coverts greenish-black, margined with 

 white. Wings purplish-brown. Bill black. 



Total length, 4fin. Wing, 2\. Tail, i^. Culmen, if. 



Female. — Upperside bronzy-green. Throat white, mar- 

 gined with black, and sometimes with metallic crimson 

 feathers on lower part. Underside gray, washed sparingly 

 with pale green, on sides of breast and on flanks. Centre of 

 abdomen and vent white, rest like the male. 



Total length, 4èin. Wing, 2\. Tail, \\. Culmen, if. 



It is a common species. 



Excepting a little more white on the centre of the abdomen, 

 I cannot see any difference between the specimens from 

 Guiana, Colombia, etc., and those from Ecuador, hence my 

 authority for considering H. albicrissa^ of Gould, as a 

 synonym of this species. 



419. Floricola pallidiceps, Gould, P.Z.S., 1871, p. 504. 



Pale green-headed Star-throat. 



r Hélîomaste à tête d'un vert pâle^ Muls. Hist. Nat. Ois. 

 Mou, 1876, t. ii., p. 275. 



Habitat. — Guatemala, Costa Rica, Veragua, and Panama. 



Maie. — Forehead and «rown metallic green. Upperside 

 shining golden-green. A patch of white feathers in the 

 middle of the rump. Median rectrices golden-bronze, next 

 one of same colour, black at tips, lateral and outermost ones 

 golden-bronze from the base to half their length, then black 

 with white tips. Spot behind the eye, and line under it white. 

 Ear-coverts brownish-black, chin black, throat metallic- 

 crimson. Underside dark golden-green. Centre of breast 

 gray, passing to white in centre, and lower part of abdomen. 

 Vent and patch on flanks white. Undertail-coverts black, 

 margined with white. Wings purplish. Bill black. 



Total length, 4fin. Wing, 2%. Tail, if. Culmen, if. 



Female. — Upperside shining golden-green, with a white 

 patch on the rump. Tail like that of the male, but the white 



