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specimen, killed on Captain Ross's expedition, disgorged an Auk 

 when it was struck, and proved, on dissection, to have another in its 

 stomach." — Fauna Boreali Americana. 



"Mr. Hutchins speaks of a pure white Gull, which breeds on the 

 Albany River, as large or larger than the Ivory Gull, being twenty 

 seven inches and a half in length, five feet from tip to tip of the 

 wings, and weighing 2 pounds, its bill and legs flesh colored." lb. 



I am inclined to consider it the young of L. glaucus, as I have in 

 my possession an immature bird, which 1 recognise as the young of 

 the present species, [L. glaucus,] which was shot on the south shore 

 of Long Island. It agrees with the bird mentioned by Mr. Hutchins 

 excepting that the abdomen in my specimen is faintly tinged with 

 brown, and the upper parts faintly tinged Avith pale yellow or cream 

 color, without any trace of the grayish-blue mantle, and the absence 

 of spots or streaks of any kind, the general appearance being white. 



GENUS LESTRIS — ILLIGER. 



JAGERS. 



[Bill rather shorter than the head — hard, strong, hooked ; head rather large ; 

 neck thick ; body full ; wings long, broad, pointed ; tail rather long, consist- 

 ing of twelve broad feathers, middle pair extending beyond the others ; feet 

 rather slender ; hind toe small.] 



LESTRIS PARASITICUS— LINN. 



ARCTIC JAGER. 



Lestris Buffonii, Bonap. Syn. 

 Lestris parasiticus, Sw. & Rich. 

 Arctic Jager, Nuttall. 

 Arctic Jager, Lestris parasiticus, Aud. Orn. Biog. 



Specific Character — Adult bill, from the frontiet feathers to the 

 point, one inch and one eighth, length of tarsi one inch and a half, 

 tail rounded, the middle pair of feathers produced tapering to an 

 acute point; young with the basal part of webs yellow. Adult male 

 with the crown, nape, quills, and tail, pitch black ; back, scapulars, 

 and lesser wing coverts blackish-brown, with a tinge of gray ; shafts 

 of the tail, and quills whitish, except on their tips ; head beneath the 

 level of the eye ; neck above and below, and breast, straw yellow ; 

 anterior part of the belly whitish — posterior part, flanks, and under 

 tail coverts brownish-gray ; interior of the wing blackish-gray. Bill 



