57 



Dall, W. H. "Kotes on the Avifauna of the Aleutian Islands, espe- 

 cially those west of Unalaslika."<Pr. Cal. Acad. Sci. (advance paper, 

 March 14, 1874, p. 12). [L. griseinucJia, p. 4. — "I have observed no 

 transitional forms in the Aleutian Islands which would connect this 

 race with littoralis.'''] 



KiDGWAY, Egbert. "Description of a jSTew Bird from Colorado." 

 <American Sportsman, July 18, 1874, p. 241. {Leucosticte atrata, 

 KiDGWAY.) 



1875. 



CouES, Elliott. "Birds of the North- West : a Hand Book of the 

 Ornitholog'y of the Eegion Drained by the Missouri and its Tribu- 

 taries." Washington, Government Printing-Oflice, 1875.* [The species 

 recognized is L. tephrocotis, Swains., Avith races var. tephrocotis and 

 var. griseiniicJia, Brandt ; under the former are included campestris^ 

 Baird, and mistralis, Allen, and in the synonymy of the latter lit- 

 toralis, Baird.] 



material examined. 



Considering that this genus has been until within a year or two past 

 among the rarest in the North American Ornis, the material at the com- 

 mand of the author is peculiarly rich, and entirely sufiQcient to decide 

 the lines between the species and the geographical races. The larger 

 portion of the collection examined was kindly loaned for the i)urpose 

 by Mr. Charles E. Aiken, of Fountain, Colorado, and Mrs. M. A. Max- 

 well, of Boulder, in the same Territory, and comprised immense series 

 of specimens, obtained at different seasons in those and contiguous 

 localities. The remainder of the collection was contributed by the Na- 

 tional Museum at Washington; the Museum of Comparative Zoology 

 at Cambridge, Mass. (for which thanks are due Mr. J. A. iVUen of that 

 establishment); and the private collection of Mr. George A. Lawrence 

 of New York City, as well as that of the author. The total number of 

 specimens compared at one time is a little more than four hundred, 

 classed as follows : 



Taking into consideration the many scattered specimens which have 

 come under notice, the number of specimens actually examined in con- 

 nection with the subject may be set down at about four hundred and 

 fifty. 



SPBeiES~AN& RACES. 



A very simple distinction lietween these two terms, as applied to de- 

 finable forms, is adopted in the following pages, the test being inter- 



* This workis dated " lb74," but it was not issued until February, 1&75, 



