ANATIN.E — THE DUCKS — FULIX. 25 



Koskonong all the summer, and perhaps breed there ; they have not, however, been 

 found doing this, nor have any broods of young birds been noticed. 



Eggs of this Duck from the Yukon River (Smithsonian Institution, ISTos. 5G37 and 

 6626) are of a pale grayish buff with a tinge of olive ; their usual breadth is 1.50 

 inches, and their length varies from 2.20 to 2.50 inches. 



Fulix coUaris. 

 THE RING-NECKED SCAUP DUCK; RING-BILL. 



Anas coUaris, Donovan, Br. Birds, VI. 1809, pi. 147 (England). 



Fidujula collaris, BoxAr. List B. Eur. 1842, 73. — Coues, Kej, 1872, 289; Check List, 1873, no. 



502 ; 2d ed. 1882, no. 722 ; B. N. W. 1874, 574. 

 Fiilijc; collaris, Baird, B. N. Am. 1858, 792 ; Cat. N. Am. B. 1859, no. 590. — Ridgw. Nom. N. 



Am. B. 1881, no. 616. 

 Anas fulicjula, WiLS. Am. Orn. VIIL 1814, 66, pi. 67, iig. 5 (not of Linn. 1766). 

 Anas (Fuligida) rufitorques, Bonap. Joi;r. Philad. Acad. IIL 1824, 381. 

 Fitlknaarufitorqucs, BoNAP. Synop. 1828, 393. — Sw. & Rich. F. B. A. IL 1831, 454. — Nutt. 



Man. II. 1834, 439. — Aud. Orn. Biog. III. 1835, 259, pi. 234 ; Synop. 1839, 287 ; B. Am. VI. 



1843, 320, pL 398. 



Hab. The whole of North America, south to Guatemala and the West Indies ; breeding chiefly 

 in the high north. Accidental in Europe. 



Sp. Char. Adult male : Head, neck, jugulum, crissum, and upper parts generally, black, the 

 head and neck with a faint violet gloss, the wing-coverts inclining to slate ; secondaries (" specu- 

 lum ") bluish gray, darker subtenninally, and very narrowly tipped with white ; primaries slate- 

 gray, the outer quills and ends of the others dusky. A triangular spot of white on the chin, and 



F. collaris, male. 



a more or less distinct collar of chestnut round the lower neck ; breast and abdomen white, 

 abruptly defined anteriorly against the lilack of the jugulum, but changing insensibly into the black 

 on the crissum, through a graduated barring or transverse mottling of white and dusky ; sides 

 white, delicately undulated with grayish dusky. Axillars and lining of the wing immaculate 

 white. Bill lead-color, with a narrow basal and broad subterminal band of bluish white, the end 

 black; iris bright yellow; legs and feet pale slaty. Adult female : Crown and nape dull dark 

 brown, becoming gradually lighter below ; rest of the head paler and grayer, the anterior half of 

 the lores, the chin, throat, and foreneck nearly or quite white ; jugulum, sides, and flanks, deep 

 VOL. II. — 4 



