378 NORTH AMERICAN BIRDS. 



of head and hind-neck yellowish olive, becoming brighter yellowish 

 (sometimes distinctly orange or yellow) on forehead and superciliary 

 region ; back olive-grayish, streaked with black ; wings dusky, the 

 middle coverts white, the greater coverts tipped with white and 

 broadly edged with light grayish, the other quills and secondaries 

 also edged with light grayish ; lower back light olive-grayish ; rump, 

 upper tail-coverts, and tail bright yellowish olive, sometimes in- 

 clining to ochraceous-orange ; sides of head, with anterior lower 

 parts, dull orange or orange-yellow, the throat usually with more or 

 less of black ; flanks (sometimes sides and belly also) pale dull 

 grayish ; under tail-coverts light yellowish. Young male in second 

 year, similar to adult female. Young of year: Similar to adult 

 female, but colors paler and duller, suffused more or less with pale 

 brownish, and no trace of black on throat (and yellow sometimes 

 almost wanting). Length 7.50-8.60, wing 3.80-4.15, tail 3.10-3.70. 

 Nest and eggs hardly distinguishable from those of I. galbula, the 

 latter, however, averaging slightly larger (.95 X -64). Hab. "West- 

 ern United States, east to and including Eocky Mountains ; south, 

 in winter, into Mexico. 



508. I. bullocki (S WAINS.). Bullock's Oriole. 



c 2 . Adult male: Forehead, superciliary region, ear-coverts, sides, flanks, 

 lower back, rump, and upper tail-coverts black. Adult female: 

 " Above gray, mixed with yellowish and variegated with black ; 

 wings blackish, edged with white ; below yellowish, middle of 

 belly whitish, flanks grayish; tail yellowish olivaceous, with 

 darker tips." Wing 4.20, tail 3.20-3.50. Hab. Central and southern 



Mexico. 



I. abeillei (LESS.). Abeille's Oriole. 1 



GENUS SCOLECOPHAGUS SWAINSON. (Page 366, pi. CIV., fig. 2.) 



Species. 



COMMON CHARACTERS. Adult males uniform black, more or less glossy ; females 

 uniform brownish gray or slaty. Nest a bulky structure of dried twigs, shreds of 

 bark, mosses, etc., placed in trees. Eggs 2-7, pale bluish green, pale olive, or dull 

 rusty brownish, variously speckled, spotted, or blotched with brown (sometimes 

 nearly uniform deep rusty brown). 



a 1 . Bill slender, its depth through base much less than half the lateral length of 

 lower mandible. Adult male in summer : Uniform glossy black, with a faint 

 dark bluish gloss on head and neck and of bluish green elsewhere. Adult 

 male in winter : The black more or less extensively overlaid by rusty brown 

 above and buffy below. Adult female in summer : Uniform dusky brownish 

 slate, without gloss, the lower parts inclining to plumbeous. Adult female 



1 Xanthornui abeillei LESS., Rev. Zool. 1839, 101. Icterus abeillii SCL., P. Z. S. 1860, 252. 



