ARGENTINE ORNITHOLOGY. 



Order II. MACROCHIRES. 



Fam. XX. TROCHILIDJE, OR HUMMING-BIRDS. 



OF the great American family Trochilidse, which, according to the 

 most recent authorities, contains about 450 species, eleven members 

 have been ascertained to occur within the limits of the Argentine 

 Republic. But of these only three ( Calliperidia furcifera, Hylocharis sap- 

 phirina, and Chlorostilbon splendidus) reach the neighbourhood of Buenos 

 Ayres, where they occur as summer visitors. The remaining eight 

 have been met with only in the northern and western provinces of 

 Argentina. Of these two (Oreotrochilus leucopleurus and Patagona gigas) 

 are also found in Chili, the others are Bolivian and South-Brazilian 

 species. 



230. OREOTROCHILUS LEUCOPLEURUS, Gould. 

 (WHITE-SIDED HUMMING-BIRD.) 



Oreotrochilus leucopleurus, ScL et Salv. NotwncL p. 81; White, P. Z. S. 

 1882, p. 615 (Catamarca) ; Elliot, Syn. Track, p. 36 ; Gould, Mon. Troch. ii. 

 pi. 71. 



Description. Head, upper surface, and wings greyish olive-brown, passing 

 into dull coppery green on the upper tail-coverts ; two central tail-feathers and 

 outer one bronzy green, the others white, narrowly edged externally with 

 brown ; throat shining green, bordered below by a band of black with bluish 

 reflexions ; flanks olive-brown ; breast and sides of belly white ; centre of belly 

 black with steel-blue reflexions ; under tail-coverts olive : whole length 5'0 

 inches, wing 2- 7, tail 2'1. Female above like the male ; beneath white, throat 

 densely spotted with brown ; flanks brownish. 



Hob. Chili and Northern Argentina. 



VOL. II. B 



