I. 



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ADDITIONS AND CORRECTIOXS. 



DuRlXG the considerable interval of time since the printing of this "work 

 was commenced, many additional i'aets have come to light in regard to the 

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

 and while several so-called species liave 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. Henshaw, Mr. C. J. Maynard, 

 and others, whose names are mentioned in their appropriate jilaces. 



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

 Institution skins of his T. jiann.% and they prove to be T. nstulatus. 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, van auduboni (I, 21). A nest with the eggs (S. I. 16,320) 

 of this species was taken near Fort Ellis, Montana, July IG, 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 .8.5 of an inch in length by .72 in breadth ; their 

 color is a rather deep greeni.sh-libie, almost exactly like those of Turdus migratorius. 



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 Tin-Jus i^aUasi, which, so far as known, builds invariably on the ground. 



Harporhynchus ocellatus (I, 3G). This is jirobably a Mexican form of 

 II. cinereus. 



