POSTSCRIPT. 857 



Dr. Alexander Wetmore's admirable report' on his explorations in 

 southern South America contains a detailed account of the life zones of 

 Argentina and Patagonia, with the more characteristic species of birds 

 listed, and also much information on the life histories of the Patagonian 

 birds additional to that contained in the present work. 



Mr. Peters' paper above mentioned is another valuable contribution to 

 Patagonian ornithology, while the many papers of Dr. Frank M. Chap- 

 man in the Bulletin of the American Museum of Natural History discuss 

 the distribution of the South American avifauna as a whole. The publi- 

 cations of Dr. Roberto Dabbene, the leading resident ornithologist of 

 Argentina, which have appeared for the most part in "El Hornero," con- 

 tain much critical discussion of the bird life of that country and of Patagonia. 



I am requested to say that Part V, of Volume II, has been printed by 

 the aid of a grant from the Carnegie Institution of Washington. 



WiTMER Stone. 



Ac.vDEMY OF Natural Scienxes, 

 Philadelphia, October 29, 1927. 



''Observations on the Birds of Argentine, Paraguay, Uruguay, and Chile.' Bull. U. S. 

 National Museum 133. 1926. 



