ORDER PASSERES. 



767 a. Sialia mexicana bairdi Ridgw. 



Chestnut-backed Bluebird. 



323 



Sialia mexicana bairdi Ridgw. Auk, XI. April, 1894, 151, 157. 

 [B i^(),parf, C i^j^partj R 2^, part, C 28, /^r/.] 

 Geog. Dist. — Rocky Mountain district, south to northern Mexico. 



767^. Sialia mexicana anabelse Anthony. 



San Pedro Bluebird. 



Sialia mexicana anabelcB Anthony, Proc. Cal. Acad. Sci. 2d 

 Ser. II. Oct. 1889, 79. 



[B— ,C— R-, C— .] 



Geog. Dist. — San Pedro Martir Mountains, Lower California. 



768. Sialia arctica Swains. 



Mountain Bluebird. 



Erythaca {Sialia) arctica Swains, in Sw. & Rich. Fauna Bor. 

 Am. II. 1831, 209, pi. 39. 



[B 160, C 18, R 24, C 29.] 



Geog. Dist. — Western North America (chiefly the interior), from 

 the western parts of the Plains to the Pacific, north to Great Slave 

 Lake, south to northern Mexico. 



