120 
NORTH AMERICAN BIRDS. 
Mottlings coarse, the blackish median streaks above not sharply 
defined, and the bars beneath heavy and distinct. 
Wing, 6.10-7.75; tail, 3.30-4.35. In the red plumage, 
white prevailing on the lower parts, where the red markings 
are not broken into" transverse bars. Nest in hollow trees or 
stumps. Hab. United States; except the Southern Middle 
t Province, the northwest region, and Florida. ( Screech-Owl .) 
var. asio. 
Wing, 5.50-6.00; tail, 2.75-3.10. In the red plumage, 
red prevailing on the lower parts, where the markings are 
much broken into transverse bars. Hal. Florida and Southern 
- T Georgia. ( Florida Owl.') . . . .. var. floridanus. 
' Wing, 5.50 - 5.80 ; tail, 3.20 - 3.30. Gray plumage, like 
v®r. asio , but the mottling above much coarser, and the nape 
with a strongly indicated collar of rounded white spots in 
pairs, on opposite webs. Red plumage not seen. Hab. 
fF' Eastern Mexico and Guatemala var . en-ano. 
!p Mottlings fine, the blackish median streaks above very sharply 
™ | defined and conspicuous ; bars beneath delicate and indistinct. 
Wing, 6.20-6.50'.; tail, 3.35-3.50. Hab. Southern Mid- 
dle Province, and Southern California ; Cape St. Lucas. 
{Me Call's -Owl.) var. mac'cat lli. 
2. S. flammeola. Toes perfectly naked, the feathering of the tarsus ter- 
minating abruptly at the lower joint. Wing, 5.40 ; tail, 2.80 ; culmen, .35 ; 
tarsus, .90 ; middle toe, .55. Ear-tufts short, or rudimentary. Facial circle 
rusty. Outer webs of the scapulars rusty-ochraceous, in striking contrast 
to the grayish of the wings and back. Other markings and colors much as 
in asio. Nesting unknown. Hab. Mountain regions of Mexico and 
California, from Guatemala to Fort Crook, Northern California. ( Feilner's 
Owl.) 
Genus BUBO, Dum. (Page 116.) 
Bubo. Two or three outer quills with their inner webs- emarginated. Ear- 
tufts well developed ; loral feathers not hiding the bill, and the claws and 
terminal scutellte of the toes exposed. Lower tail-coverts not reaching the 
end of the tail. (Type, B. maximus.) 
Nyctea. Four outer quills with their inner webs emarginated. Ear-tufts 
rudimentary ; loral feathers hiding the bill, and claws and entire toes con- 
cealed by long hair-like feathers. Lower tail-coverts reaching to end of the 
tail. (Type, N. scandiaca.) 
Subgenus BUBO. (Page 120.) 
1. B. virginianus. Lower parts transversely barred with black, and without 
longitudinal stripes. Above without longitudinal stripes on the anterior por- 
tions. Nest in top of trees ; sometimes deserted nest of other birds; occasionally 
in hollow of trees, or in fissures of rocks. 
a. A conspicuous patch of white on the jugulum ; lining of the wing im- 
maculate, 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. ( Great Horned Owl.) 
var. vir ginianus . 
