BIRDS OF NOETH AND MIDDLE AMERICA. 853 



dd. Darker and browner above, without couspifuous grayish or olive-grayish 



edgings to interscapulars or else with the black streaks on a distinctly 



olivaceous ground. 



e. Black spots on chest and streaks on sides very broad; larger, the tarsus 



averaging 23.37 or more, wing averaging 68.33 in male, 65.53 in female. 



/. More olive-brown above. (Southern portion of Mexican plateau. ) 



Melospiza oinerea mexicana (p. 365.) 

 /. More rusty brown above. (Southwestern edge of Mexican plateau.) 



Melospiza oiaerea adusta (p. 366.) 

 ei-. Black spots on chest and streaks on sides much narrower; smaller, the 

 tarsus averaging not more than 22.35, wing averaging 64.77, or less, in 

 male, 62. 74, or less, in female. 

 /. More olivaceous or sooty in coloration, with flanks light olive or olive- 

 buffy and streaks on chest, etc., mostly black. 

 g. Larger, with stouter bill; wing averaging 64.77 in male, 62.74 in 

 female; depth of bill at base averaging about 7.87. (Lower Sacra- 

 mento and San Joaquin valleys, California. ) 



Melospiza cinerea heermanni (p. 364. ) 

 gg. Smaller, with more slender bill; wing averaging 60.96 in male, 58.42 

 in female; depth of bill at base averaging 7.11 in male, 6.86 in 

 female. (Coast district of middle California. ) 



Melospiza cinerea samuelis (p. 369.) 

 ff. More rufescent in coloration, with flanks strongly buffy or fulvous, and 

 streaks on chest, etc., mostly chestnut; small, like M. r. samuelis, but 

 with larger feet. (Coast district of northern California.) 



Melospiza cinerea cleonensia (p. 371.) 

 cc. Streaks on chest, etc., not black nor mostly black, but brown or light rusty; 

 or if, in part (e. g., M. c. goldmani), approaching black the back very nar- 

 rowly and not distinctly streaked with black and upper tail-coverts without 

 black mesial streaks. 

 d. Streaks on chest, etc., light rusty or cinnamon-rufous; back olive-grayish 

 streaked with chestnut or chestnut-brown. 

 e. Smaller and paler, with broader bill; wing averaging 66.80 in male, 64.26 

 in female. (Sonoran desert district, Sonora, Arizona, California, etc.). 



Melospiza cinerea fallax (p. 362.) 

 ee. Larger and darker, with narrower bill; wing averaging 71.88 in male, 

 67.82 in female. (Southern Lower California.) 



Melospiza cinerea rivnlaris (p. 363. ) 

 dd. Streaks on chest, etc., grayish brown, chestnut-brown, or blackish brown; 

 back deep olive, olive-grayish, or grayish, streaked with dull or dark 

 brown or, narrowly, with blackish. 

 e. Wing much more than three times as long as tarsus; blackish brown 

 streaks or spots of under parts confined to chest and sides of throat, 

 those of sides conspicuously lighter brown. (Pine belt, mountains of 



Durango, Mexico. ) Melospiza cinerea goldmani (p. 366.) 



ee. Wing little, if any, more (usually less) than three times as long as tarsus; 



blackish brown streaks or spots of under parts extended over breast 



and sides, or else these markings not blackish brown but light brown, 



grayish brown, or chestnut. 



/. Smaller, the wing averaging 67.82 in male, 65.02 in female; general 



color above dark rusty, the lateral crown-stripes deep chestnut or 



chestnut-brown; streaks on chest, etc., rusty brown or chestnut. 



(Oregon to southern Alaska.) Melospiza cinerea morphna (p. 372.) 



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