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Show 166 MR. H. SAUNDERS ON THE LARIN/E. [Feb. 5, L. hutchinsii I consider to be an immature L. glaucus in the stage where the mottled brown of immature plumage has passed away, and the pearl-grey mantle has not yet begun to show. This stage lasts but a short time, which will account for the fact that this supposed species has so rarely been obtained; but I have always observed in young specimens in captivity that at this stage they are nearly, and sometimes quite, white. A fine example in this state, obtained off Japan by Capt. St. John, H.M.S. ' Sylvia,' is in the Marquis of Tweeddale's collection. Mr. Collett obtained one in Norway in September 1871 ; and several have been recorded from America. The feet and legs in adults of this Gull are bright flesh-pink, and not lemon-yellow as depicted by an extraordinary freak of the colourist in Mr. Dresser's 'Birds of Europe.' 5. LARUS LEUCOPTERUS, Faber. Larus argentatus, E. Sabine, Tr. Linn. Soc. xii. p. 546 (nee auctt.). Larus leucopterus, Faber, Prod. Isl. Orn. p. 91 (1822) ; Sw. & Rich. F. Bor.-Am. ii. p. 418 (1831) ; Schl. Mus. P.-Bas, Lari, p. 5 (1863); Dall. & Bann. Tr. Chic. Ac. i. 1869, p. 304 (Alaska and Lower Yukon); Coues, B. N.W. A m . p. 622 (1874); Dresser, B. of Europe, pt. xlix (1876). "Larus glaucoides, Temm." Meyer, Taschenb. iii. p. 197 (1822); Boie, Isis, 1822, p. 562. Larus glaucoides, Temm. Pl. Col. 77e livr. Introd. Larus (1828). Larus islandicus, Edmonst. M e m . Wern. Soc. iv. p. 506 (1823) (uec Edmonst. op. cit. p. 185). Larus arcticus, Macgill. Mem. Werner. Soc. v. no. xiii. p. 268 (1824) (large specimen). Larus minor, Brehm, Vog. Deutschl. p. 736 (1831). Laroides glaucoides, Brehm, op. cit. p. 744. Laroides leucopterus, Brehm, op. cit. p. 745 ; Bruch, J. f. Orn. 1855, p. 281. Laroides subleucopterus, Brehm, op. cit. p. 746. Glaucus leucopterus, Bruch, J. f. Orn. 1853, p. 101. Glaucus glacialis, Bruch, op. cit. p. 101. Larus chalcopterus, Licht. Nomencl. Av. Mus. Berol. p. 99 (1854), sine descr. (type examined, H . S.). ? Laroides chalcopterus (Licht.), Bruch, J. f. Orn. 1855, p.22. Laroides glacialis, Bruch, op. cit. 1855, p. 282. Leucus chalcopterus, Bp. Consp. Av. ii. p. 216 (1857). Leucus arcticus, Bp. op. cit. p. 216. Leucus leucopterus, Bp. op. cit. p. 217. Hab. Even more thoroughly arctic, during the breeding-season, than L. glaucus; straggling southward in winter as far as the coast of France. It is not even authenticated as breeding in Iceland or Spitzbergen ; but it does so within the arctic circle from Greenland to Behring's Straits, It also breeds in Alaska ; and I have examined a specimen which was obtained in Japan by Capt. Blakiston. |