BIRDS OP NORTH AND MIDDLE AMERICA. 123 



c. Lower back and rump yellow. (Central Nicaragua to central Costa Rica. ) 



Lanio leuoothorax, adult male (p. 124) 

 cc. Lower back and rump black. (Veragua, Chiriqui, and soutliwestern Oosta 



Kica. ) Lanio melanopygins, adult male (p. 125) 



m. Back, wings, and tail brown; head brown or grayish, much paler on throat; 



under parts of body dingy yellow. 



h. Throat light gray; flanks yellow, tinged with olive-brown; under tail-coverts 



yellow or dull orange; rump yellowish.. Lanio anrantius, adult female (p. 123) 



. hb. Throat light brown or grayish brown; flanks and under tail-coverts tawny or 



yellowish cinnamon; rump not yellowish. 



c. More russet-brown above, the head umber brown, and throat wood brown, or 



isabella color Lanio leucothorax, adult female (p. 124) 



cc. More olive-brown above, the head olive, and throat grayish brown or brown- 

 ish gray Lanio melauopygius, adult female (p. 125) 



LANIO AURANTIUS Lafresnaye. 

 MEXICAN' SHRIEE-TANAGEB. 



Adult mule. — Head, neck (except lower foreneck), scapulars, wings 

 (except part of lesser and middle coverts), tail, and thighs uniform 

 black; inner portion of lesser wing-covert area and innermost middle 

 coverts (except tips) white; back, rump, and under parts of body yel- 

 low (grading from cadmium yellow on back to canary yellow on pos- 

 terior under parts); lower foreneck tawny, the chest more or less 

 tinged with the same; under wing-coverts white, with broad black 

 external border; upper tail-coverts black, the shorter ones yellow with 

 black central areas; bill black; legs and feet dusky; length (skins), 

 179.1-205.7 (190.8); wing, 104.4-106.7 (105.4); tail, 89.2-96.5 (93); 

 exposed culmen, 18-20.6 (19.6); depth of bill at base, 8.6-10.2 (9.1); 

 tarsus, 19.3-20.6 (20.1) middle toe, 14-16 (16.2).' 



Admit femMe. — Pileum and hindneck dark olive, usually more or 

 less tinged with slate-gray, especially on forehead; back and scapulars 

 olive-brown, the lower back lighter and more tawny, or ochraceous- 

 olive, this passing into olive-ochraceous or dull gallstone-yellow on 

 rump; wings and tail plain brown (intermediate between raw umber 

 and mars brown); sides of head similar to pileum but not quite so dark 

 and rather grayer, passing into smoke gray on chin, throat, and fore- 

 neck; under parts of body lemon yellow, shaded with olive on chest, 

 sides, and flanks; the latter slightly more fulvous; under tail-coverts 

 fulvous-yellow or ochraceous-orange; maxilla blackish, mandible paler, 

 more horn color; legs and feet horn brownish (in dried skins); length 

 (skins), 176.3-196.9 (183.9); wing, 94-99.6 (97); tail, 79.8-91.2 (85.6); 

 exposed culmen, 17.6-19.3 (18.5); depth of bill at base, 8.9-9.7 (9.1); 

 tarsus, 18.8-19.8 (19.3); middle toe, 13.6-14.2 (14).' 



Southeastern Mexico, in States of Vera Cruz (Orizaba, Santecoma- 

 pan, etc.), Oaxaca (Guichicovi), and Tabasco (Teapa), Guatemala (Coban, 

 Chisec, Choctum, Kampamak, Kamkhal, etc.), British Honduras 

 (Belize), and Honduras. 



* Seven specimens. ^ Five specimens. 



