232 DR. J. J. KAUP’S MONOGRAPH OF THE STRIGIDA. 
Dimens.—Head 70, bill from the cere 22, from the gape 34, wings 233, tarsus 47, 
middle toe 30 mm. long. 
“Hab. St. Domingo ; Cuba; Jamaica. 
2. Orus macrurus, Kp. 
Diagn.—The tail brown, 148 mm. long, with five small whitish bands and end. 
Descr.—The upper parts dark brown, with two to three irregular rusty-yellow cross- 
bands on each feather. The lower parts white, on each feather a broad dark-brown shaft- 
stripe. The under tail-coverts pure white. Wings on the inner side blackish, with from 
three to five whitish pronged bands and spots. ‘Tarsi rusty-yellowish-white with rusty- 
yellow cross-lines. The bristle-feathers of the lorum white with black shafts. The 
stripe over the eye dirty-white, extending to the ear-horns, which are not very well 
distinguished. Veil white, each feather with rusty-yellow, black-margined shaft-spots. 
Dimens.—Head 70, bill from the root 20, from the gape 34, wing 250, tarsus 60, 
middle toe without the nail 39; left ear-hole (taken on a stuffed specimen) 14, right 
ear-hole 22 mm. long. 
Hab. Mexico. (Wiirzburg Museum.) 
Subgenus b. Otus, Kp. 
Diagn.—With small curved bill and long wings. The first wing-feather not so long 
as the fourth. The first wing-feather distinctly emarginated near the end, the second not 
so distinctly. Toes mostly covered with feathers to the scales next the nails. The 
dentellated margin of the first wing-feather very much developed. This subgenus is 
connected with the fourth subgenus, Brachyotus, Gould. ; 
It appears that this subgenus contains species which are more night-birds than the 
other subgenera. O. vulgaris, O. americanus, and O. zonurus are formed on one and the 
same type. Otus stygius is a second type species. 
3. Orus vutearis, Flem. 
Strix otus, Linn. Naum. t. 45; Gould, Birds of Eur. t. 39. 
Diagn.—The wing 275-279 mm. long. The wing with 4~7, the tail with 6-8 cross- 
bands. 
Descr.—From the lorum to the hind angle of the eye, like the chin, pure white, the 
first with black points ; near the anterior corner of the eye black. The three anterior 
folds of the operculum covered with rusty-yellow feathers, having blackish shaft-points, 
and some not very distinct blackish spots. The margin of the operculum with two 
series of feathers placed in pairs, which are white, tinged with rusty-yellow ; they have a 
broad black margin, and blackish roots with white shafts in the centre. The first series 
of feathers on the hinder ear-margin is stiff and black, except those of the superior 
and interior margins, which are softer and have white ends. The front and cap-feathers 
