I. 



ADDITIONS AND CORRECTIONS, 



During the considerable interval of time since the printing of this work 

 was commenced, many additional facts have come to liglit in regard to the 

 habits and geographical distribution of the land birds of North America ; 

 and while several so-called species have proved to be mere races, or even 

 of less rank, some others have been added to the list. The more important 

 of these are herewith subjoined. 



Most of the new facts here announced are the results of the more recent 

 labors of Captain Charles Bendire, First Cavalry, U. S. A., and of Messrs. 

 J. A. Allen, C. E. Aiken, Dr. E. Coues, H. W. Hensliaw, Mr. C. J. Mayuard, 

 and others, whose-names are mentioned in their appropriate places. 



Turdus pallasi, var. nanus (I, 20). Dr. Cooper has sent to the Smithsonian 

 Institution skins of his T. nanus, and they prove to be T. ustulatus. The surmise 

 expressed on page 21, that the nest and eggs described by Dr. Cooper as those of 

 the former in reahty belonged to the latter species, is thus undoubtedly correct. 



Turdus pallasi, var. auduboni (I, 21). A nest with the eggs (S. I. 16,320) 

 of this species was taken near Fort Ellis, Montana, July 16, 1872, by C. H. Mer- 

 riam, attached to Dr. Hayden's party. The nest is large and bulky for the size 

 of the bird, is deeply saucer-shaped in form, measuring 6 inches in external 

 diameter by 3 in depth. The cavity of the nest is 3 inches in diameter by about 

 1.75 deep. It is composed entirely of green mosses and lined with fine grass 

 leaves. 



The eggs were three in number, in shape broadly ovate and obtusely rounded 

 at either end. They measure .85 of an inch in length by .72 in breadth ; their 

 color is a rather deep greenish-blue, almost exactly like those of Turdus migrato7'ius. 



The nest was built in a small pine-tree, about eight feet from the ground, in the 

 pine regions of the mountains. In its position it differs from any now known 

 of the Turdus pallasi, which, so far as known, builds invariably on the ground. 



Harpoi'hynchus OceUatus (I, 36). This is probably a Mexican form of 

 H. cinereus. 



