BIRDS OF NORTH AND MIDDLE AMERICA. 347 



cc. Head (including crest) and neck gi-ayish brown, the crest often tinged with 

 blue; back light brownish gray or grayish brown ; rump, upper tail-coverts, 

 and posterior under parts light cerulean or turquoise blue. (Sierra Nevada 

 and San Bernardino ranges of California and mountains of northern Lower 

 California. ) « 



Cyanocitta stelleri frontalis (p. 355) 

 66. A white or grayish white spot immediately above eye. 

 c. Head and foreneck black (crest sometimes tinged with blue). 

 d. Back brownish gray or sooty, without distinct blue tinge; crest very slightly, 

 if at all, tinged with blue. 

 e. Back dusky grayish brown, or sooty; superciliary spot smaller, or else 

 more grayish; forehead streaked with light blue or else streaks obso- 

 lete; blue of rump, etc., deeper. (More northern Rocky Mountains, 

 from Wyoming, 6 Utah, 6 Idaho, and eastern Washington northward.) 



Cyanocitta stelleri annectens (p. 357) 

 ee. Back clear or light brownish gray or smoke gray, strongly contrasted 

 with black of crest; superciliary spot larger, or else purer white; fore- 

 head conspicuously streaked with bluish white; blue of rump, etc., 

 paler. (More southern Rocky Mountains, from Colorado, « and Utah « 

 to States of Zacatecas and northern Jalisco, west-central Mexico. ) 



Cyanocitta stelleri diademata (p. 358) 



dd. Back distinctly blue (dull blue or grayish blue) ; crest distinctly tinged 



with blue,, (South-central Mexico, in States of Vera Cruz, Puebla, 



Morelos, Mexico, and Michoacan. ) Cyanocitta stelleri azteoa (p. 361) 



cc. Head and foreneck blue (sides of head more blackish). (Southern Mexico, 

 in States of Hidalgo, Vera Cruz, Oaxaca, Guerrero, Colima, and Chiapas; 

 Guatemala; Honduras.) Cyanocitta stelleri coronata (p. 362) 



CYANOCITTA CRIST ATA CRISTATA (Linnaeus). 



BLUE JAY. 



Adults (sexes aUhe). — Pileum (including crest), hindneck, back, scapu- 

 lars, rump, upper tail-coverts, and lesser and jniddle wing-coverts • 

 plain dull campanula blue or grayish violet-blue, the frontal feathers 

 sometimes tipped with paler blue or bluish white; superciliary space, 

 suborbital and malar regions, greater part of auricular region, chin, 

 and throat very pale bluish gray; a loral patch (extending more or 

 less broadly across base of forehead), narrow postocular streak, and a 

 black collar beginning on nape (beneath crest) and extending thence 

 downward across end of auricular region and along side of neck and 

 connecting with a broader, somewhat crescentic patch across chest, 

 black; greater wing-coverts, secondaries, and rectrices rich cobalt or 

 azure blue, broadly tipped with white (except middle pair of rectrices), 

 and barred with black; primaries plain azure blue, paler on exterior 

 quills, the portion beyond sinuated edge grayish; breast, sides, and 

 flanks smoke gray or drab-gray (less brown in winter plumage), paler 

 posteriorly; abdomen, anal region, and under tail -co verts white; under 

 wing-coverts dusky blue; bill and feet black; iris brown. 



« Intergrading with C. s. carbonacea on east slope of Northern Coast Range and 

 southern portion of Southern Coast Range. 



6 In winter only. ^Breeding. ] 



