AVES IBIDID^. 359 



in character and lacks the metallic purple and bronzes that characterize 

 the adults at this season. 



Newly hatched downy young are black. 



Geographical Range. — Southern North America, ranging on the Atlan- 

 tic coast as far north as Central Florida. Throughout Texas and Arizona 

 to California and thence north along the Pacific coast to Oregon. Trop- 

 ical America and south to the Argentine Republic and Chili, Patagonia. 



Fig. i8i. Fig. 182. 



Plegadis guarauna. Immature. 8643 Plegadis guaraima. Immature. 8643 



Princeton University Collection. About ^ Princeton University Collection. About ^ 



natural size. natural size. 



The White-faced Glossy Ibis was not obtained by the Naturalists of the 

 Princeton Expeditions. A series of six individuals of the species col- 

 lected at points in Argentina by S. Pozzi, together with the series in the 

 British Museum, has furnished a basis for the descriptions given. 



" It is a remarkable circumstance that the three birds that possess perhaps 

 the widest range of all the species belonging to the fauna of Buenos Aires 

 should have been uncommonly abundant this autumn. These birds are 

 the HiniautopHsnigricolHs, a native of both Americas ; the Otiisbracliyofus, 

 called here ' Lechitsoii," and known, I believe, in Asia and Europe as well 

 as in America; and the Glossy Ibis [Ibis falcinelhis), a bird possessing a 

 still wider range. The Black-necked Hiinantopiis, though almost unfail- 

 ingly found wherever much water occurs on the pampas, is not a numerous 

 species ; but at present they are extremely abundant, and quite familiar 

 even in cultivated fields near the farmhouses, flocks of them being seen 

 wherever little pools of water have been formed by the rains. At some 

 future time I will communicate all I have learned from personal observa- 

 tion respecting its habits. Whether the habits of a species (like this bird) 



