_Bubo_, DUMÉRIL, 1806. (Type, _Strix bubo_, LINN. = _B. maximus_,
SIBB.)
_Rhinostrix_, KAUP, 1849. (Type, _Strix mexicana_, GMEL. = _B.
mexicanus_, RIDGW.)
_Rhinoptynx_, KAUP, and _Rhenoptynx_, KAUP, 1857. (Same type.)
Species and Races.
1. =B. virginianus.= Lower parts transversely barred with black, and
without longitudinal stripes. Above without longitudinal stripes on
the anterior portions.
_a._ A conspicuous patch of white on the jugulum; lining of the
wing immaculate, or only faintly barred. Wing, 14.00–16.00; tail,
8.00–10.00; culmen, 1.10–1.20; tarsus, 2.00–2.20; middle toe,
1.95–2.10.
Rufous tints of the plumage prevailing; face dingy rufous. _Hab._
Atlantic Province of North America …
var. _virginianus_.
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
Valley in winter (Wisconsin, Hoy; Pekin, Illinois, Museum,
Cambridge) …
var. _arcticus_.
Dusky tints of the plumage prevailing; face dull grayish, barred
with 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 …
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. _magellanicus_.[27]
2. =B. mexicanus.=[28] Lower parts longitudinally striped with black,
and without transverse bars. Above with longitudinal stripes on the
anterior portions. Wing, 11.20–12.00; tail, 6.00–6.50; culmen, .90;
tarsus, 2.00; middle toe, 1.95. _Hab._ Middle and South America
generally.