DR. J. J. KAUP’S MONOGRAPH OF THE STRIGID/. 239 
2. Buzso pencacensis, G. R. Gray. 
Otus ——, Frankl. 
Bubo (Urrua) cavearius, Hodgs. 
Gould, Cent. Him. B. t. 3. 
Diagn.—tThe black vertical margin-feathers of the ear bound the veil. The feather- 
horns 62-67 mm. long, black at the roots, and on the interior webs rufous-margined. 
Descr.—Smaller than the common Bubo maximus. Sides and belly rufous, with fine 
black shaft-stripes, and finer pointed arrow-like drawing. Tarsi uniform fawn-coloured. 
Dimens.—Head 95-98, bill from the gape 49-51, tarsus 74-78, middle toe 44—50 
mm. long. 
3. Buso ascALAPHus, Sav. 
Expéd. Egypt. Ois. 3. 2; Gould, Hur. t. 38; Pl. Col. 57; Brit. Zool. pl. B. f. 3. 
Otus ascalaphus, Cuv. 
Ascalaphia savignyi, 1. Geoff. 
Diagn.—A black vertical stripe bounds the veil of the ear. The ear-feathers short, 
44 mm. in length, rusty-yellow, with black points. Sides and belly rusty-yellow, with 
round white, black-margined spots. 
Descr.—The most slender species of all, having some analogies with Otus. The 
whole plumage rufous, with irregular dark-brown drawing on the superior parts, except 
the tail-coverts, which are nearly uniform rufous with some bands at the end. Along 
the shoulder-coverts and the superior parts of the wing a series of white spots. Sides 
and inferior tail-coverts elegantly pointed and banded. Near the furcula are large 
spots. The slender thighs and toes pale rusty-yellow. Under side of the tail nearly 
white, with six narrow black bands; the upper side with irregular drawing on the 
middle feathers. 
Hab. Egypt and Nubia. Strays sometimes into Sardinia, Sicily, and even England. 
Dimens.—Head 91, bill from the gape 49, wing —?, tarsus 79, middle toe 43 mm. 
long. 
4. Buso maximus, Sibb. 
Strix bubo, Linn. ; Gould, Birds of Eur. t. 37; Naum. t. 44. 
atheniensis et alba, Daud. 
Diagn.—The veil of the ear not bounded by a black stripe. ar-horns nearly 
80 mm. long, black, on the margins of the inner webs rufous-spotted. The wings 
460 mm. in length. 
Descr.—The largest bird in this subgenus. The face rufous-grey, with fine cross- 
bands. The upper parts rufous, with black shaft-spots and lighter cross-lines. The 
under parts of the back and tail-coverts rusty-yellow, with irregular brownish cross- 
bands, and darker rusty-yellow-pointed margins on each feather. The shoulder-coverts 
dark brown, at the base rufous, blackish-banded, on the margins white-spotted and 
VOL. 1V.—PART VI. 2M 
