15. LARus. 291 



1871, p. 122 (Melville I., M'Clinfock); id. Handb. Brit. U. p. 77 

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 Dresser, B. Eur. viii. p. 433, pi. 605 (1877); Fdlden, Ibis, 1877, 

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 B. p. 120 (1882) ; W. H. Neale, P. Z. S. 1882, p. 053 (Franz- 

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 Giylioli, Avif. Ital. p. 433 (1880) ; Salvad. Ucc. Ital. p. 287 

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 U.S. Nat. Mus.xiv. p. 417 (1891 : Arctic Amer.) ; Gatke, Vogelw. 



f 2 



