&2 



STRIGIDJG. 



Sp. 1. Sy. stridulum. 



Strix stridula. Liitn. i. p. 180. — Strix sylvatica. Shrnv, v. vii. 

 p. 253. — Varieties? Strix Aluco. Shaw, v. vii. p. 255. — 

 Strix noctua. Shaw, v. vii. p. 252 ? — Strix rufa. Shaw, v. vii. 

 ^. 252 ? — Strix Austriaca. <S/mto, v. vii. ^;. 247 ? — Strix alba. 

 Shaw, v. vii. p. 247 ? — Strix Soloniensis. Shazv, v. vii. p. 262. — 

 Strix Ulula. Shaw, v. vii. p. 270.— Britain and Europe. 



GENUS XXXVII.— SURNIA, Dumeril. HAWK-OWL. 



Rostrum breve, arcuatum. 

 Discus capitis parvus, imper- 



fectus. 

 Aures parvse, ovales. 

 Auricula nullae. 

 Pedes valde plumosi. 

 Cauda elongata, cuneiformis. 



Beak short, arched. 



Disc of the head small and 



incomplete. 

 Ears small, oval. 

 Egrets none. 

 Leg's very plumose. 

 Tail elongated, wedgeshaped. 



The birds of this genus prey by day. 



Sp. 1. Su. Uraleusis. 



Strix Uralensis. Shaw, v. vii. p. 277. Temm. PI. Col. 27. — 

 Strix Caspia. Shaw, v. vii. p. 272? — Siberia. 

 Sp. 2. Su. Africana. 



Strix Africanus. Shaw, v. vii. p. 278. — Africa. 

 Sp. 3. Su? Nisuella. 



Strix Nisuella. Skatv, v. vii. p. 279. — Africa. 

 Sp. 4. Su ? Canadensis. 



Strix Canadensis. Shaw, v. vii. p. 273. — Strix Hudsonicus. 

 Shaw, v. vii. p. 274 ? — North America. 



GENUS XXXVIII— NYCTEA. 



BeaJc curved from the base. 

 Facial disc large. 



Rostrum a basi curvatum. 

 Discus faciei grandis. 

 Auricula nullae. 

 Pedes plumosi; ungues valde 



curvati, acuti. 

 Cauda brevis. 



Egrets none. 



Legs plumose; claws much 



curved, acute. 

 Tail short. 



