322 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



depth of bill at base, 5.33; tarsus, 17.02-17.63 (17.27); middle toe, 

 11.43-11.94(11.68).^ 



Southern New Mexico (Silver Citj^), southward over eastern border 

 of Mexican plateau to southern Puebla (Chalchicomula) ; breeding 

 from Tamaulipas (Miquihuana) northward. 



Spizella woHheni Ridgway, Proc. U. S. Nat. Mus., vii, no. 17, Aug. 22, 1884, 259 

 (Silver City, New Mexico, June 16; U. S. Nat. Mus.).— Ajmerican Orni- 

 thologists' Union, Check List, 1886, no. 564.— Shakpe, Cat. Birds Brit. Mus., 

 xii, 1888, 666 ("western Texas"). 



S. [pizella} worihem Ridgway, Man. N. Am. Birds, 1387, 419. 



(??) Spizella pusilla (not Fringilla pusilla AVilson?) Shakpe, Cat. Birds Brit. Mus., 

 xii, 1888, 664, part ("Mexico"). 



SPIZELLA ATROGULARIS (Cabanis). 

 BLACK-CHINNED SPARKOW. 



Adndt male. — Lores, anterior portion of malar region, chin, and 

 more or less of the throat, black; rest of head and neck gray, darker 

 (slate-gray or slate-color) on pileum, where sometimes narrowly and 

 indistinctly streaked with dusky, fading into lighter gray (no. 7) or 

 olive-gray on chest and other under parts, the abdomen white; back 

 light rusty brown or cinnamon (sometimes mixed with broccoli brown) 

 streaked with black; scapulars similar but with outer webs more 

 decidedly rusty or cinnamomeous; rump and upper tail-coverts plain 

 gray or olive-gray, the latter sometimes with darker mesial streaks; 

 tail dusky, the rec trices edged with light gra}^; lesser wing-coverts 

 gray; middle coverts dusky centrally, broadly margined, and tipped 

 with pale cinnamon-buff y; greater coverts dusky centrally broadly 

 edged with pale buffy brown or wood brown; tertials dusky, edged 

 with pale wood brown; primaries dusky edged with pale grayish; bill 

 vinaceous-cinnamon, more or less darker at tip; tarsi deep brown or 

 dusky, the toes usually darker; length (skins), 121.92-140.21 (134.62); 

 wing, 60.20-69.85 (64.01); tail, 61.21-74.17 (67.82); exposed culmen, 

 8.64-10.16 (9.40); depth of bill at base (three specimens), 5.84-6.10 

 (5.97); tarsus, 17.53-20.32 (18.80); middle toe, 12.19-13.97 (13.21).' 



Advlt female. — Similar to the adult male and not always distin- 

 guishable, but usually with the black of chin, etc., duller and much less 

 extended (hardly extending to upper throat), often entirely wanting, 

 the entire head being gray,' and the gray of pileum and hindneck 

 rather browner; length (skins), 124.46-138.68 (131.32); wing, 60.20- 

 64.77 (61.47); tail, 59.94-69.85 (65.28); exposed culmen, 8.64-9.91 



' Two specimens. 



' Fifteen specimens. 



' Usually the black is indicated by a darker shade of the gray. 



