1837.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 141 



ruaticolns (/rehnitzfcii or Falco rusticolus sacer. At present such a discus- 

 sion would be a quite unnecessary waste of time and labor. 



99 (109\ Falco islandus Brunn. "204. 



A few pairs breed on Bering Island, but this species does not seem 

 to remain there over winter. 



100 (110). Falco pealei (Ridgw.) 20G. 



Add to the synonymy : 



1S85. — Falco perigrinus Dyb. & Taczan., Bull. Soc. Zool. France, 1S84, p. — , Extr. 

 p. 4 (nee TuxsT.). 



Common resident on both islands. An additional specimen has been 

 received from Mr. Grebnitzki (Orig. No. 202, U. S. Nat. Mus. No. 

 106621).* 



101 (115). Archibuteo lagopus (Brlxx.) 203,329. 

 Occasional visitor to Bering Island. 



102 (117). Haliaeetus leucocephalus (Lix.) 209. 



Breeds on Bering Island, though not so common as formerly. 



103 (113). Haliaeetus hypoleucus Ridgw. 213. 



The only known specimen is the type from Bering Island.! 



104 (120). Thalassoaetus pelagicus (Pall.) 217. 



Occasional visitor to Bering Island. The old notion that this island 

 is the true habitat of the Great Sea Eagle is quite erroneous. fPl. IX.) 



105 (121). Pandion haliaetus (Lin.) 219. 

 Occasional visitor to Bering Island. 



STRIGOIDE^. 



106 (123). Asio accipitriuus (Pall.) 220. 



Eesident on both islands, though less common in winter. 

 107(124). Nycteanyctea (Lin.) 221. 



Numerous on Bering Island, where it is resident. On Copper Island 

 it seems to be only an occasional winter visitor. 



CrCULOIDE^l 



108 (12H). Cuculus cancruE telephouus (Heine) 224. 

 Accidental on Bering Isiand. 



109 (127\. Cuculus penin.sulee Ste.tn. 227. 



Straggling individuals from the mainland were shot by me on Copper 

 Island. 



*Dybowski & Taczauowski, "Liste," &c., record ''Ri/potriorchis aubbuteo," -'Jsttir 

 candidissiimis," and '' Accipiter iiisus,'' from Beriuo- Island, iu regard to whicii see foot- 

 note, aatea, p. 136.] 



T Dybowski & Taczauowski, /. c, also give R. aJbiciUa as occurring in Bering and 

 Copper Islands. I am satistied that tlie statement rests on a misidentllication of young 

 birds. 



