228 VERTEBRATES I BIRDS. 



The Long-crested Jay, C. macrolophus, Baird, of the 

 Rocky Mountains, is twelve and a half inches long, and 

 the wing less than six inches, and is distinguished by its 

 lorfg crest, which is nearly twice the length of the bill. 



The Genus Cyanocitta has the head without a crest, 

 the wings and tail blue, but not banded. 



The California Jay, C. californica, Strick, of the Pacific 

 coast, is twelve and a quarter inches long, and the wing 

 five inches ; general color above blue without bars ; a 

 crescent of blue on the fore part of the breast ; under 

 parts before the crescent, white streaked with blue ; be- 

 hind it, dull white. 



Woodhouse's Jay, C. Woodhousii, Baird, of the Rocky 

 Mountains ; the Florida Jay, C. floridana, Bonap. ; the 

 Mountain Jay, C. sordida, Baird, of the Rocky Moun- 

 tains ; and the Ultramarine Jay, C. ultramarina, Strick., 

 of the Rio Grande region, are additional species of Cy- 

 anocitta. 



The Genus Xanthoura has the bill very stout, head 

 without a crest, the throat black, and the lateral tail- 

 feathers bright yellow. 



The Rio Grande Jay, X. luxtwsa, Bonap., of the Rio 

 Grande, is eleven inches long, and the wing four and 

 three quarters inches ; the color above, green ; beneath, 

 yellow glossed with green ; the inside of the wings and 

 four outer tail-feathers, yellow ; the sides of the head, and 

 beneath from the bill to the fore part of the breast, black ; 

 the crown and nape brilliant blue, and the sides of the 

 forehead white. 



The Genus Perisoreus has the bill very short, and 

 notched at the tip ; head without a distinct crest. 



The Canada Jay, P. canadensis, Bonap., of Northern 

 North America, is over ten and a half inches long, and 

 the wing five and three quarters inches ; the head and 

 neck and fore part of the breast, white ; a plumbeous 



