^'2 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



upper foreneck, uniform dark metallic violet or black with a strong 

 violet gloss; back, scapulars, lesser wing-coverts, rump, and upper tail- 

 coverts dark steel blue or glossy blue-black, the first three usually more 

 or less tinged (sometimes strongly) with violet; larger wing-coverts, 

 remiges, and rectrices black; middle and greater wing-coverts, tertials, 

 and rectrices broadly margined with dark steel bluish; two outermost 

 rectrices with a large subterminal patch of white on inner web; 

 inner webs of secondaries abruptly white for basal half or more; 

 under parts of body pure yellow (rich lemon to chrome or sometimes 

 almost Indian yellow); under wing-coverts and axillars white, usually 

 tinged with yellow, especially the latter; maxilla black, becoming gray- 

 ish beneath nostril; mandible grayish (light bluish gray in life), the 

 tip blackish; legs and feet dusky horn color (in dried skins); length 

 (skins), 86.4-98.6 (93.2); wing, 49.3-54.4 (51.8); tail, 28.5-35.6 (32); 

 exposed culmen, 6.9-7.6 (7.4); depth of bill at base, 4.3-4.8 (4.6); tar- 

 sus, 12.2-13.5 (18); middle toe, 8.4-10.2 (9.7).' 



Adult female. — Forehead yellowish olive-green, passing into grayish 

 olive or olive-gray on crown, occiput, and hindneck, this into grayish 

 olive-green on back, scapulars, wings, and upper rump, the lower 

 rump more yellowish olive-green; under parts olive-yellowish or light 

 grayish yellow anteriorlj-, passing into brighter and purer yellow pos- 

 teriorly (under tail-coverts lemon or canary yellow, the abdomen 

 nearly the same); bill and feet as in adult male; length (skins), 86.4r- 

 96.5 (92.2); wing, 49-53.6 (51.3); tail, 29.5-32.6 (31.2); exposed cul- 

 men, 6.6-7.6 (7.1); depth of bill at base, 3.8^.6 (4.3); tarsus, 13.2-14 

 (13.5); middle toe, 9.7-9.9 (8.9).' 



' Twenty-two specimens. 



^ Ten specimens, many of them in the plumage described as that of the immature 

 female. 

 Specimens from different localities average as follows: 



Adult males from Yucatan are slightly deeper yellow below, but apparently are 

 not otherwise different. 



