318 Mr. C. H. B. Griiiit on Birds collected in Argentiia, 



Tlie youno^ l)ir(l is sliglitly duller than the adults^ especially 

 on the head, and the inner secondaries are tipped with dark 

 buff. The base of the bill is not flesh-coloured. 



The Bronze Humming-bird appears to be a winter 

 A-isitor to the Ajo district, as it is absent during October, 

 November, and December, and does not ])reed there. 



When I first arrived I was told by residents that the 

 Glittering Humming-bird often remained throughout the 

 year ; but there is no doubt than this species had been 

 confounded with it. 



Miss Runuacles " observed it in every month throughout 

 the winter of 1909," and it disappeared soon after I arrived. 



139. Chlorostilbon splendidus. 



C/dorostilbon splendidus Arg. Orn. ii. p. 9 ; Salv. Cat. B. 

 xvi. p. 49. 



a. (^ ad. Los Ynglases, Ajo. Sept. 27, 1908. 



b. c^ ad. „ „ Oct. 28, 1908. 



c. d. $ ad. „ „ Nov. 9-17, 1908. 

 e. ? young. „ „ Dec. 14, 1908. 

 f,g,h. S ? ad. „ „ Jan. G-28, 1909. 

 i. ? young. „ „ Apr. 17, 1909. 



j. ^ ad. Arjerichi, Paraguay. Aug. 9, 1909. 



k. S ad. Villa Franca, Paraguay. Aug. 10, 1909. 



/. ^ ad. Near Santa Elena, N. Argentina. Nov. 15. 

 1909. 



Irides dark brown ; bill tomato-red, tip black ; legs and 

 toes black. In the female the base of the bill is not quite 

 so bright. 



The young female differs from the adult in being rather 

 duller above, while the feathers have a more ''woolly'^ ap- 

 pearance ; most of the feathers, especially on the rump and 

 nape, are edged with rufous, and they lack the colour at 

 the base of the bill. 



One of the specimens is green above and the other bronzy 

 green. 



The Glittering Humming-bird made its first appearance 

 at Los Ynglases on Sept. 10th. 



