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 Z. galbula, the 
latter, however, averaging slightly larger (.94 X .63). Hab. West- 
ern United States, east to and including Rocky Mountains ; south, 
in winter, into Mexico. 
508. I. bullocki (Swarns.). Bullock’s Oriole. 
ce. 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 (Lzss.). Abeille’s Oriole.? 
Genus SCOLECOPHAGUS Swatnson. (Page 366, pl. CIV., fig. 2.) 
Species. 
Common CHARactTERS.—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 2-8, pale bluish green, pale olive, or dull 
rusty brownish, variously speckled, spotted, or blotched with brown (sometimes 
nearly uniform deep rusty brown). 
a‘, 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 Xanthornue abeillei Less., Rev. Zool. 1839, 101. Jcterus abeillii Scu., P. Z. S. 1860, 252. 
