26 ALLEN'S NATURALIST'S LIBRARY. 



It has never been met with on the continent of Europe, and 

 appears to be only a straggler to Greenland. 



Range outside the British Islands. This is a North American 

 species, breeding from Labrador to Alaska, and occurring even 

 on the Commander Islands ; migrating south in winter to 

 Mexico and the Greater Antilles. 



Habits. Resemble those of the Golden-eye, even to the 

 mode of nesting in the hole of a tree. Very little has been 

 written about the species by the explorers in Alaska, but the 

 stomach of a female bird shot in Minnesota by Mr. A. C. Stark 

 was crammed with small red worms. The bird is also known 

 to be herbivorous, and to devour land and marine molluscs, 

 shrimps, and leeches. Like the Golden-eyes, it is a first-rate 

 diver, and in the States it is often called the " Butter-ball," 

 from its extreme fatness. 



Nest. Placed in the hole of a tree, and lined with down. 

 Eggs. From six to ten in number. 



THE LONG-TAILED DUCKS. GENUS HARELDA. 



Harelda, Stephens, Gen. Zool. xii. part 2, p. 174 (1824). 



Type, If. glacialis (Linn.). 



The peculiar characters of this genus are the uniformly 

 coloured primaries, which show no distinct "mirror," the 

 variegated nature of the plumage, the fully-crested head, and 

 the long central tail-feathers. The edges of the upper man- 

 dible are partly bent inwardly. 



I. THE LONG-TAILED DUCK. HARELDA GLACIALIS. 



Anas glacialis, Linn. Syst. Nat. i. p. 303 (1766). 



Harelda glacialis, Macg. Br. B. v. p. 192 (1852); Dresser, B. 

 Eur. vi. p. 617, pis. 443, 444 (1875) J B - - u - t List Br - 

 B. p. 132 (1883) ; Snnnders, ed. Yarr. Br. B. iv. p. 446 

 (1885); id. Man. Br. B. p. 443 (1889); Lilford, Col. Fig. 

 Br. B. part xxx. (1895) ; Salvad. Cat. B. Brit. Mus. xxvii. 

 p. 389 (1895). 



Fuligula glacialis, Seebohm, Br. B. iii. p. 598 (1885). 



(Plate LX.) 

 Adult Male. General colour above black, the scapulars dove- 



