DR. J. J. KAUP’S MONOGRAPH OF THE STRIGIDA. 235 
7. Orus mExicanus, Cuw. 
Strix mexicana, Gmel. 
longirostris, Spix. 
— maculosa, Wied. 
Bubo clamator, Vieull. 
Vieill. Ois. d’Am. Sept. t. 20; Spix, Av. Bras. 9a; Aud. 412. 
Diagn.—With white face and fine zigzag lines on the superior parts. 
Descr.—A little larger than O. vulgaris, with larger head, bill, and feet. The face, 
lores, eye-stripe, chin, and throat pure white. The superior eyelid and anterior angle 
of the eye with single black bristle-feathers. The two folds on the operculum have 
white feathers, which at the base and top are black. The downward-directed feathers 
of the hinder ear-margin dark brown with white ends. The ascending feathers uniform 
dark brown; the inward-turned feathers at the base of the ear white, with blackish 
bases ; under these a black spot, in which the feathers are white at the base. The 
continuation of the veil under the chin white, spotted with black and rufous. The cap 
of the head, like all the upper parts, rufous, with broad dark-brown shaft-spots, and 
with fine cross and irregular bands on the rufous margins. The ear-horn-feathers are 
black, on the inner webs banded with rufous. ‘The shoulder-coverts have large white 
spots on the margins, as also have some small feathers on the margin of the hand- 
feathers. The wing-feathers are pale rufous, with five to six irregular blackish bands 
far apart from each other ; those on the outer web are placed higher than those on the 
inner web. Near the ends of the hand- and arm-wings the bands are lighter and more 
grey- and brownish-marbled. On the inner side of the wing the coverts are white, 
rufous-tinted, with narrow and not very distinct blackish shaft-stripes. The superior 
part of the interior coverts of the hand-wings grey-black, as in the greater number 
of Owls. The tail rufous, brownish-marbled, with seven or eight irregular, blackish, 
rufous-pointed cross-bands. On the under side the tail is nearly white, and the 
bands, as usual, narrow. The under parts white, tinted with rufous, and with black 
shaft-spots, which are broadest on the breast and narrowest on the under tail-coverts. 
Tibiz and toes light yellow. Eyes yellow. 
Hab. Mexico and South America. 
8. Orus MADAGASCARIENSIS, A. Smith. 
Catal. of S. Afr. Mus. 
Bubo madagascariensis, Puch. Arch. du Mus. tom. iy. pl. 23. 
Diagn.—With dark face. Tarsus 37 mm. long. 
Descr.—A little larger. The drawing of the whole body is not so fine and elegant. 
On the upper parts the spots are more distinct and more speckled. The under parts 
rufous, each feather with black-brown shaft-spots without cross-bands or lines. The 
