ORDER PASSERES. 277 



GENUS PASSERELLA SWAINSON. 



Passerella SWAINSON, Classif . Birds, II, 1837, 288. Type, by monotypy, 

 Fringilla iliaca MERREM. 



Passerella iiiaca (MERREM). 



RANGE. Northern and western North America, south in winter 

 to the southern border of the United States. 



a. Passerella iliaca iliaca (MERREM). Fox Sparrow. [585.] 



Fringilla iliaca MERREM, Beytr. besond. Gesch. Vogel, II, 1786, pi. x. 

 (North America.) 



RANGE. North America. Breeds in Boreal zones from tree limit in north- 

 eastern Alaska, northern Mackenzie, central Keewatin, northern Ontario 

 (Moose Factory), and northern Ungava south to central Alberta, northern 

 Manitoba, southern Keewatin, Magdalen Islands, and Newfoundland; win- 

 ters from lower Ohio and Potomac valleys (occasionally further north) to 

 central Texas and northern Florida; casual on the coast of southern Alaska 

 and in California. 



b. Passerella iliaca unalaschce*nsis (GMELIN). Shumagin Fox Sparrow. 



[685o.] 



Emberiza unalaschcensis GMELIN, Syst. Nat., I, ii, 1789, 875. ("Aoon- 

 alashka," Alaska.) 



RANGE. Unalaska Island, Alaska Peninsula, and Shumagin Islands; win- 

 ters south to northern California. 



c. Passerella iliaca megarhyncha BAIRD. Thick-billed Fox Sparrow. [5856.] 



Passerella megarhynchus BAIRD, Rep. Expl. & Surv. R. R. Pac., IX, 

 1858, 925. (Fort Tejon, California.) 



RANGE. Mountains of California. Breeds in Transition Zone on both 

 slopes of the Sierra Nevada from Mt. Shasta to Mt. Whitney: winters in 

 southwestern California; casual in Marin County. 



d. Passerella iliaca schistacea BAIRD. Slate-colored Fox Sparrow. [585c.] 



Passerella schistacea BAIRD, Rep. Expl. & Surv. R. R. Pac., IX, 1858, 

 490. (South Fork of Platte River, about 25 miles east of northeastern 

 corner of Colorado, Nebraska.) 



RANGE. Rocky Mountain region of United States. Breeds in Transition 

 Zone from interior of British Columbia and northwestern Montana south to 



