ORDER PASSERIFORMES. 225 



Genus XANTHOURA Bonaparte. 



Xanthoura Bonaparte, Consp. Avium, I, sig. 48, May 6, 1850 [Feb. 3, 

 1851], 380. Type, by subs, desig., Corvus peruvianus Gmelin = Corvus 

 yncas Boddaert (Gray, 1855). 



Xanthoura luxuosa glaucescens Ridgway. Green Jay. [483.] 



Xanthoura luxuosa glaucescens Ridgway, Auk, XVII, No, 1, Jan., 1900, 28. 

 (Fort Brown, Texas = Brownsville, Texas.) 



Range. — Lower Rio Grande Valley, Texas, as far north as Laredo, and in 

 Tamaulipas and Nuevo Leon, Mexico. 



Genus PICA Brisson. 



Pica Brisson, Orn., 1760, I, 30, II, 35. Type, by tautonymy, Pica 

 Brisson = Corvus pica Linnaeus. 



Pica pica hudsonia (Sabine). American Magpie. [475.] 



Corvus Hudsonius Sabine, in Franklin, Narr. Journ. Polar Sea, 1823, 671. 

 (Cumberland House [Saskatchewan].) 



Range. — ^Principally Boreal and Transition zones from the Alaska Peninsula, 

 middle Yukon, central Alberta, central Saskatchewan, and southern Manitoba 

 south to northern Arizona and New Mexico, and from eastern Washington and 

 the eastern slope of the Sierra Nevada to western North Dakota and New 

 Mexico. Casual in Iowa, Wisconsin, Illinois, Michigan, Ontario, and the 

 Hudson Bay region; accidental in Quebec. [Numerous allied races in Europe, 

 Asia, and northwestern Africa.] 



Pica nuttalli (Audubon). Yellow-billed Magpie. [476.] 



Corvus Nutallii Audubon, Birds Amer. (folio), IV, 1836 [1837?], pi. 362, 

 fig. 1 (C. Nuttallii Orn. Biog., IV, 1838, 450). (Santa Barbara, Upper 

 California.) 



Range. — Upper and Lower Austral zones of California west of the Sierra 

 Nevada, from Tehama County to Ventura and Kern counties, chiefly in the 

 Sacramento and San Joaquin valleys. 



Subfamily CORVINAE. Ravens and Crows. 



Genus CORVUS Linnaeus. 



Corvus Linnaeus, Syst. Nat., ed. 10, I, 1758, 105. Type, by subs, desig., 

 Corvus corax Linnaeus (Gray, 1840). 



Corvus corax principalis Ridgway. Northern Raven. [486a.] 



Corvus corax principalis Ridgway, Manual N. Amer. Birds, 1887, 361. 



(Greenland to Alaska, etc. = St. Michael, Alaska.) 

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