of the United States. 37 



Inhabits North, and probably South America, as we 

 strongly suspect Strix choliba, Vieill., a species taken from 

 D'Azara, to be the present. Common in Pennsylvania and 

 New Jersey in the autumn : retiring to the north in summer. 



SUBGENUS II. ULULA. 



Bubo, Symium, Sav., Otus, Ulula, Bubo Syrnium Cuv. 



Conch of the ear very large, extended semicircularly from 

 the bill to the top of the head, with a membranaceous oper- 

 culum ; disk of slender feathers well marked and perfect; 

 feet thickly covered to the claws with short feathers. Nocturnal. 



f Head tufted. (Bubo, Otus, Cuv.) 



27. Strix virginiana, Gm. (4.) Mottled ; primaries and tail 

 feathers banded with black and dusky;* auricular conch re- 

 stricted ; wings not reaching to the tip of the tail : very 

 large. 



Great horned Owl, Strix virginiana, Wils. Jim. Orn. vi. 

 p. 52. pi 50. fig. I- 



Inhabits more or less common throughout America, prin- 

 cipally in deep swampy woods : connects admirably the two 

 subgenera Surnia and Ulula. 



28. Strix otus, L. Mottled ; primaries banded with ferru- 

 ginous ; tufts long; wings reaching beyond the tail. 



Long-eared Owl, Strix otus, Wils. Am. Orn. vi. p. 73. 

 pi. si. Jig. 3. 



Inhabits both continents ; common in Pennsylvania, es- 

 pecially in the autumn : resident. 



29. Strix brachyotos, Gm. Whitish-ferruginous, spotted with 

 dark brown ; tufts short, inconspicuous ; wings reaching to 

 the tip of the tail. 



Female more intensely ferruginous. 



* But not with ferruginous as in S. bubo of Europe 

 Vol. II. * 



