TURDIDAE 
Genus Myadestes 
a* Upper parts plain grayish or slate color, under 
parts similar but paler* 
Myadestes unicolor 
aa» Back and wings brown, distinctly different 
from lower surface* 
Myadestes obscurus 
Genus Turdus 
a»_ Under tail coverts partly white* 
b* Under tail-coverts brownish gray with a 
median streak of white; a rufescent collar* 
rufitorques 
bb* Exposed portion of under tail-coverts chiefly 
white; no rufescent collar* 
assimilis s ubsp• 
aa. Under tail coverts without white. 
lb* General color buffy brown or buffy olive 
(paler below); under wing coverts strongly 
buff. 
£• Inner webs of remiges distinctly edged with 
buff; under tail coverts clear buff 
gray! subsp* 
cc * Inner webs of remiges edged with pale 
broccoli brown; under tail coverts pale 
wood brown; lores dusky marginal above by 
a streak of brownish. 
infuscatus $ 
bb* General color grayish brown, sooty brown or 
black. 
£. Bill and feet dusky brown| upper parts 
olive or olive brown; under parts light 
grayi sh brown • pie be .jus 
cc. Bill and feet yellowish; plumage black 
