APPENDIX. 377 



stridula=S. ahtco of Linnaeus, viz. the Tawny Owl, so 

 that on the principle of Linnean tautonomy this will be 

 the type. 



It is also the type by subsequent designation of 

 Newton in the 4th edition of Yarrell's British Birds 

 (vol. i. 1871-4, p. 150). The whole matter has been 

 thoroughly discussed by Newton (Ibis, 1876, p. 94) and 

 Allen (Auk, xxv. 1908, p. 288), and the latter author has 

 shown that if our nomenclature commences with the 

 10th edition of Linnaeus there is no alternative but to 

 accept the Tawny Owl as the type of the genus Stria. 



Genus NYCTEA. Type by tautonymy : N. nyctea (Linn.). 



Hyctea nyctea. The Snowy Owl was first described in the 

 1758 edition of Linnaeus under the name Strix nyctea. 

 In the 12th edition it occurs twice under the names 

 S. scandiaca and S. nyctea. The former was used in the 

 1st edition of the List. 



Genus SURNIA. Type by subsequent designation of Froriep 

 (Froriep's ed. of Dumeril, 1800, p. 35) : Striae Imd- 

 sonia = Surnia ulula caparocli (M tiller). 



Surnia ulula and S. u. caparoch. The earliest name for the 

 American Hawk-0\vl is Strix caparoch of P. L. S. 

 Miiller, 177G. Linnaeus' name Strix fiuwrea, used in the 

 1st edition of the List and by Saunders, has been shown 

 by Lonnberg (Ibis, 1913, p. 398) to be really referable 

 to Tengmalm's Owl. 



Genus NYCTALA. This genus, though long recognised and 

 acknowledged, was founded by Brehm in 1828 on 

 three undescribed species and is therefore a " nomen 

 nudum." An alternative SEgolius Kaup (Natiirl. Syst. 

 1829, p. 34) is used by Hartert, but is rejected by the 

 A. 0. U. Check-List as antedated by sEfjolia Billberg 

 (Enum. Ins. 1820, p. 83). In the A. 0. U. Check-List, 

 Cri/ptoglaiuv Richmond (Auk, xviii. 1901, p. 193) is 

 used. 



