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Genus HARELDA. 



Anas apud Linnaeus, Syst. Nat. i. p. 203 (1766). 

 Clangula apud Boie, Isis, 1822, p. 564. 

 Clangula apud Fleming, Phil, of Zool. ii. p. 260 (1822). 

 Platypus apud C. L. Brehm, Lehrb. eur. Vog. ii. p. 840 (1824). 

 Harelda, Stephens in Shaw's Gen. Zool. xii. pt. ii. p. 175 (1824). 

 Fuligula apud Bonaparte, Synop. B. U. S. p. 395 (1826). 

 Pagonetta apud Kaup, Natiirl. Syst. p. 66 (1829). 

 Crymonessa apud Macgillivray, Man. Brit. B. ii. p. 186 (1842). 



The single species belonging to this genus is peculiar in having the central rectrices even much 

 more elongated than in Bafila, and in that respect stands alone amongst the marine Ducks. 

 The Long-tailed Duck inhabits high latitudes, its range being circumpolar. Full particulars 

 respecting its range, habits, and nidification are given in the following article. 



Harelda glacialis has the bill much shorter than the head, about as broad as high at the 

 base, slightly narrowing and rounded towards the tip ; unguis large, roundish, convex, decurved ; 

 lamella? strong, the ends visible along the gape-line ; nostrils large, oblong, subbasal ; trachea 

 gradually narrowed, at the lower end expanded, having six rings extremely narrow before, with a 

 transversely oblong tympanum, membranous in front ; wings short, pointed, the first and second 

 quills about equal and longest, scapulars much elongated and pointed; tail small, graduated; 

 but the central rectrices are much elongated and tapering; legs short, placed far aft, tarsus 

 anteriorly scutellate ; hind toe moderate but broadly lobed ; anterior toes long ; claws moderate, 

 slender, slightly curved. 



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