APPENDIX. 377 



st7idula=S. aluco o£ Linnaeus, viz. the Tawny Owl, so 

 that on the principle o£ Linnean tautonomy this will be 

 the type. 



It is also the type bj- subsequent designation o£ 

 Newton in the 4th edition o£ Yavrell'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 o£ LinnsBus there is no alternative but to 

 accept the Tawny Owl as the type o£ the genus Strix. 



Genus NYCTEA. Type by tautonymy : JV. mjdea (Linn.). 



Nyctea nyctea. The Snowy Owl was first described in the 

 1758 edition o£ Linnfeus 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. 



Genns SURNIA. Type by subsequent designation o£ Froriep 

 (Froriep's ed. o£ Dumeril, 1806, p. 35) : Strix hud- 

 sonia = Siirnia idida caparoch (Miiller). 



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

 American Hawk-Owl is Strix caparoch of P. L. S. 

 Miiller, 1776. Linnajus' name Strix funerea, used in the 

 1st edition o£ 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 ^golius Kaup (Natiirl. Syst. 

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

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

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

 Cryptoglaux Richmond (Auk, xviii. 1901, p. 193) is 

 used. 



