BIRDS OF NORTH AND MIDDLE AMERICA. 293 



greater wing-covert,-, without white edgings (but with alnnipt white 

 tips), and remiges wholly black except a narrow edging of white for 

 terminal half or less; bill stouter; length (skins), 190-199 (191.3); 

 wing, 81-86 (84); tail, 89-90 (89.3); exposed culmen, 18-19 (18.3); 

 tarsus, 21-24 (23); middle toe, 16-17 (16.3).^ 



Adult female. — Not seen, 



Mugeres Island, Yucatan. 



Icterus cucullatus (not of Swainson) Salvin and Godman, Biol. Centr.-Am., 



Aves, i, 1887, 471, part (Mugeres Island). 

 Icterus cucullatus duplexus Nelson, Proc. Biol. Soc. Wash., xiv, Sept. 25, 1901, 



173 (Mugeres Island, Yucatan; coll. U. S. Nat. Mus.). 



ICTERUS GIRAUDII Cassin. 

 GIRAUD'S ORIOLE. 



Adults (sexes alike)., summer plumage. — Forehead, lores, orbital, 

 suborbital, and malar regions, chin, throat, upper chest (except later- 

 ally), wings (except more anterior lesser coverts), and tail, uniform 

 black; rest of plumage cadmium 3^ellow; scapulars chiefly black but 

 mixed with yellow toward interscapular region;' bill black, with basal 

 portion of mandible bluish gray (pale grayish blue in life?); legs and 

 feet horn color or grayish dusk}" (bluish gra}" in life?). 



Winter {or fresJdy assumed) plumage.- — Similar to summer plumage, 

 but yellow of upper parts more or less obscured b}^ an olive tinge, 

 especially on pileum and hindneck. 



Immature {second year f). — Similar to adults but duller in color, the 

 upper parts yellowish olive or dull olive-yellow, the wings and tail 

 dusk}^, the former with narrow and indistinct dull grayish edgings, the 

 lateral rectrices edged with light olive-greenish. 



Young {first plumage). — Pileum, auricular region, hindneck, rump, 

 and upper tail-coverts ochre-yellowish, more or less tinged with olive, 

 especially on back; malar region, chin, throat, and chest light saffron 

 yellow; rest of under parts light chrome yellow; wings dull blackish, 

 the coverts and secondaries edged with light olive, the primaries more 

 narrowly edged with dull grayish; tail dull blackish with indistinct 

 paler edgings, the lateral feathers with whitish shafts. 



Adult male.—\u^\\gi\\ (skins), 189.2-233.7 (210.1); wing, 91.4-111,3 

 (102,1); tail, 95,8-108.7 (99,3); culmen, from base, 22,9-26.9 (24.4); 

 depth of l)ill at base, 9.9-11.7 (10.7); tarsus, 25.9-28.2 (26.9); middle 

 toe, 17-20.3 (18.8).=* 



Admit female.— \j^^^\h (skins), 182,9-195, 6 (188.5); wing, 86.4-90.9 

 (88,4); tail, 82,6-94 (88.4); culmen, from base, 22.1-23.4(22.6); depth 



^ Three specimens. 



^ Sometimes there is a slight admixture of black on outer side of thighs. 



* Eighteen specimens. 



