. A history of British birds . and secondaries, pale slate-grey slightly tippedwith brownish-white, which gradually wears off; points ofthe smaller wing-coverts black, forming a dark bar; the fourouter primaries on each side black on the outer webs, andalso in decreasing proportions on the inner w^ebs next theshafts; tertials pale slate-grey, with a spot of black nearthe end, the inner broad web margined with white; upperand under tail-coverts white ; tail-feathers white, barred withblack at the end, except the outer tail-feathers on each side,which are the smallest; chin, neck, breast, and al
. A history of British birds . and secondaries, pale slate-grey slightly tippedwith brownish-white, which gradually wears off; points ofthe smaller wing-coverts black, forming a dark bar; the fourouter primaries on each side black on the outer webs, andalso in decreasing proportions on the inner w^ebs next theshafts; tertials pale slate-grey, with a spot of black nearthe end, the inner broad web margined with white; upperand under tail-coverts white ; tail-feathers white, barred withblack at the end, except the outer tail-feathers on each side,which are the smallest; chin, neck, breast, and all the undersurface of the body pure white; legs, toes, and membranes,pale brown. The downy nestling is white on the head and underparts,with a buff tint on the shoulders and flanks ; back greyish;bill nearly black ; feet dusky with yellowish webs. Varieties of the Kittiwake are very rare; the Editor isindebted to Mr. E. Hargitt for a perfect albino obtained inIceland on the 29th September, 1877. 656 GA LARIDJ;. Pagophila eburnea (Pbipps*).THE IVORY GULL. Larus churneus. Paoo?hila, Kaupf.—Bill shorter than the head, robust, compressed, straight,the upper mandible decurved towards the tip, lower mandible narrower ; nostrilsbasal, linear, oblong, wider in front, covered above and behind with a slopingthin-edged plate. Wings long, pointed, the first quill longest. Tail rather long,slightly graduated. Legs short, bare for a short distance above the tibia; tarsibroadly scutellate in front, and minutely at the sides and back ; interdigitalmembranes emarginated ami serrated; claws strong and curved; hind toefurnished with a large claw, and connected on the inside with the tarsus bya well-defined web. • Larus eharncus, Phipps, Voy. towards North Pole, p. 187 (1774). + Natiirl. Syst. pp. 69, 186 (1829) ; from nayos a pointed rock, ami (/uXtto,I love. IVORY GULL. 657 The first example of this truly Arctic Gull recorded inthe British Islands was obtained at Balta Sound,
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Keywords: ., bookauthorsaun, bookcentury1800, bookdecade1870, booksubjectbirds
