BIKDS OF NORTH AND MIDDLE AMERICA. 293 



greater wing-coverto without white edgings (but with abrupt white 

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

 terminal half or less; bill stouter; length (skins), 190-199 (194.3); 

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



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

 Icterus cuaiUatus duplexut Nelson, Proc. Biol. Soc. Wash., xiv, Sept. 25, 1901, 



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



ICTERUS GIRAUDII Cassin. 

 GIRAUB'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 yellow; scapulars chiefly black but 

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

 portion of mandible bluish gray (pale gra^nsh blue in life?); legs and 

 feet horn color or grayish duskjr (bluish graj' in life?). 



Winter (or freshly assumed) lylumage. — Similar to summer plumage, 

 but yellow of upper parts more or less obscured by 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 

 dusky, 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 maZe.— Length (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 bill at base, 9.9-11.7 (10.7); tarsus, 25.9-28.2 (26.9); middle 

 toe, 17-20.8 (18.8).'' 



Adult feinale.—ljengih (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. 



