4 
Fam. STRIGID/E. 
Genus Strix,(l) Linn. 
* Str. flammea. Britain. 
* Str. (Ulula, Selb ; Scotiaptex, Swain.) Stridula. Brit . 
* Str. (Scotophilus, Swain.) Tengmalmi. Br . and Europe. 
* Str. (Otus, Auct.) vulgaris. Britain. 
Genus Bubo, (2) Cuvier. 
* Bu. maximus. Britain and Europe . 
Bu. (Heliaptex, Swain) arcticus. Arc., America. 
% Bu. (Scops, Antiq.) Aldrovandi. Br. and Europe. 
Genus Nyctea, Savig. 
* Nyc. Candida. Britain and Arctic Regions . 
Genus Nyctipetes, Swain. 
* Nyc. nudipes. Britain and Europe. 
Genus Surnia,(3) Dumer. 
* Sur, funerea. America, and N. Bur ope. 
Ordo II. INSESSORES, Vig. 
Tribe. DENTIROSTRES. 
Fam. LANIAD.E. 
Subfam. LANIANAL 
Genus Lanius, Linn. 
* Lan. Excubitor. Britain. 
(1) The subfamilies of the Owls have not yet been recognized, but 
it is likely that the genera already established, will, when the species 
become better known, and the groups properly analysed, assume that 
rank. According to Mr. Swainson’s views, the genus Strix contains 
four subgeneric, or, perhaps, they may form generic groups, viz., Strix , 
Ulula , Scotophilus, and Olus. 
(2) Under the genus Bubo we have, at least, three well-characterized 
groups. 
(3) Under this genus, or, as a subgeneric form, it is probable the 
Athene fortis and Ath. Strenua of “ Gould’s Birds of Australia,” will take 
their place. The Athene maculata and Ath. Boobook , of the same author, 
appear to belong to the genus Nyctipetes , Swain. 
