APPENDIX. 379 



Genus CIRCUS. Type by subsequent designation of Lesson 

 (Man. d'Orn.i. 1828, p. 105) : C. tcruginosus (Linn.). 



Circus pygargus. Linn sens' description of this species is 

 founded on Albin's Ringtail (Birds, ii. 1738, pi. v.) r 

 which represents Montagu's Harrier (cf. Rothschild, 

 Bull. B. 0. C. xxxiii. 1913, p. 75); C. pygargus has 

 many years' priority to Circus cineraceus Montagu 

 (Orn. Diet. i. Falcon, sp. 2, 1802), the name used in 

 the first edition of the List. 



Genus BUTEO. Type by tautonymy : B. luteo (Linn.). 



Archilwteo Brelim (Isis, 1828, p. 1269) is a genus 

 without a definite type and is an exactly similar case 

 to that of JNyctala. As, however, the distinctions be- 

 tween the genera Buteo and Arcliibuteo rest only on the 

 amount of the tarsal feathering, and as several Asiatic 

 species vary in this point, the Committee have decided 

 to reject Arcliibuteo as a separate genus. 



Buteo buteo. In Linnpeus' description the locality is given 

 as Europe. The first reference is to Gesner, who- 

 observed the Buzzard in Savoy, which may therefore 

 be taken as the typical locality. In the first edition of 

 the List the name B. rule/arts was used to avoid using 

 the same generic and specific name. 



Genus AQUILA. Type by tautonymy: A. aquila Briss. = 

 A. chrysaStu* (Linn.). 



Aquila fusca. The name used until recently for the Great 

 Spotted Eagle was Falco maculatus Gmel., 1788. Unfor- 

 tunately this is antedated by Falco maculatus Tunstall, 

 1771, which = Perm's apivorus. We are therefore obliged 

 to use the next available name, Aquila fusca Brehm, 

 1823. Aquila clanga Pallas, 1827, also refers to the 

 Greater Spotted Eagle, but is of later date, while Falco 

 nccrius Gmel., 1788, also at one time used for this species, 



