STRIGID JE — THE OWLS. 
121 
Lighter tints of the plumage prevailing ; face dirty or fulvous white. 
All the colors lighter. Hab. Western Province of United States, 
and interior regions of British America. Upper Mississippi Yalley in 
winter (Wisconsin, Hoy ; Pekin, Illinois, Museum, Cambridge). (West- 
ern Horned Owl.) var. arcticus. 
Dusky tints of the plumage prevailing ; face dull grayish, barred witli 
dusky. All the colors darker, chiefly brownish-black and grayish-white, 
with little or no rufous. Hab. Littoral regions of northern North 
America, from Oregon northward, and around the northern coast to 
Labrador. (Pacific Horned Owl.) var. pacificus. 
b. No conspicuous patch of white on the jugulum, which, with the lining 
of the wing, is distinctly barred with blackish. Wing, 12.00 ; tail, 7.50 ; 
culmen, 1.00 ; tarsus, 2.10 ; middle toe, 1.85. 
Colors much as in var. virginianus , but more densely barred beneath, 
the dark bars narrower and closer together. Hab. . South America. 
var. mag ellanicus. 
23 Subgenus NYC TEA, Stephens. (Page 116.) ” 
N. scandiaca. Adult. gk Color pure white, more or less barred trans- 
versely with clear dusky, or brownish-black. Male sometimes almost pure 
white. Downy young, sooty slate-color. Wing, 16.00-18.00; tail, 9.00- 
10.00. Nest generally on the ground, or in ledges, exceptionally on trees ? 
Dusky bars sparse, narrow, umber-brown. Hab. Northern parts of 
Pakearctic R ealm var. scandiaca . 
Dusky bars more numerous, broader, and clear brownish-black. Hab. 
Northern parts of Nearc tic Realm. (American Snow Owl.) . var. arctic a . 
33 Genus SURNIA, Dumeril. (Page 116.) 31 
S. ulula. Above dark vandyke-brown, the head above dotted with 
white, and the scapulars spotted with the same. Beneath transversely 
barred with vandyke-brown and white, the bars regular, continuous, and 
sharply defined. Head and neck with two lateral and one posterior 
medial stripes of brownish-black, the space between them with white pre- 
vailing. Bill and iris yellow. Wing, about 9.00; tail, 6.80-7.00. 
White spotting prevailing. Hab. Palaearctic Realm . . var. ulula. 
Brown spotting prevailing. Nest in fop of pine-trees, or on stumps 
(sometimes on cliffs ?). Hab. Nearc tic Realm. (Hawk Owl.) var. hudsonia. 
Genus GLAUCIDIUM, Boie. (Page 116.) 
Common Characters. Above brown, varying from nearly gray to bright ferru- 
ginous, in some species this color interrupted by a more or less distinct whitish 
nuchal collar, with an adjacent blackish spot (sometimes concealed) on each side 
of the neck. Tail with narrow bands. Beneath white, the sides striped with 
brown or blackish. Throat and jugulum white, with a dusky collar between. 
Crown speckled or streaked with lighter ; wings more or less spotted with the 
same. 
A. Markings on the crown circular, or dot-like. 
1. G. passerinum. Tail with six to eight narrow white bands. Upper 
