BIKDS OF NORTH AND MIDDLE AMERICA. 853 



dd. Darker and browner above, witiiout eongpieuou^ grayish or olive-grayish 



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



olivaceous ground. 



('. 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 cinerea mexicana (p. 365.) 

 ff. More ru.sty brown above. (Southwestern edge of Mexican plateau.) 



Melospiza cinerea adusta (p. 366.) 

 €>: 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- 

 buff y and streaks on chest, etc., mostly black. 

 (J. 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 lull; 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 l)uffy or fulvous, and 

 streaks on chest, etc., mostly chestnut; small, like M. c. sdmnehx, but 

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



Melospiza cinerea cleonensis (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. 

 I'. 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 rivularis (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. 

 (. 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 ru.sty, 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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