GLAUCIONETTA. 105 
b'. Smaller, with relatively smaller bill. Male: Length about 18.00, wing 
8.00-9.00 (8.52), bill from tip to extremity of frontal angle 1.65-1.80 
(1.73), depth of bill at base .95-1.05 (99), width .70-.75 (.74), width of 
nail .18-.20, tarsus 1.30-1.55 (1.48), middle toe 2.15-2.30 (2.22). Female: 
Wing 7.40-8.00 (7.72), bill from tip to frontal angle 1.40-1.60 (1.50), 
depth at base .75-.85 (.81), width .60-.68 (65), width of nail .18, tarsus 
1.10-1.45 (1.32), middle toe 1.80-2.45 (2.05). Hab. Northern portions of 
eastern hemisphere. 
G. clangula (Liny.). Golden-eye.! 
b’, Larger, with relatively larger bill. Male : Length 18.50-23.00, wing 9.00- 
9.30 (9.18), bill from tip to extremity of frontal angle 1.85-2.05 (1.95), 
depth at base 1.00-1.10 (1.03), width .82-.85 (.84), width of nail .25, 
tarsus 1.50-1.60 (1.57), middle toe 2.40-2.60 (2.45). Female: Length 
about 16.50, wing 7.90-8.30 (8.14), bill from tip to frontal angle 1.60~ 
1.75 (1.64), depth at base .85-.90 (89), width .70, width of nail .20, tarsus 
1.40-1.48 (1.44), middle toe 2.05-2.20 (2.12). Eggs 2.38 x 1.71, dull light 
pea-green, occasionally ranging to dull pale olive-buffy. Hab. North 
America generally, breeding from Maine and Canada northward ; in 
winter, south to Cuba and Mexico. 
151. G. clangula americana (Bonap.). American Golden-eye. 
a. Height of upper mandible at base, measured from extremity of frontal angle to 
nearest point on cutting-edge, equal to distance from anterior point of loral 
feathering to anterior end of nostril, and much greater than from latter point 
to tip of upper mandible. 
Adult male: Head and upper neck glossy blue-black, with a large vertical 
wedge-shaped patch of white across lores; white wing-patch crossed by 
a broad bar or band of black; length 21.00-23.00, wing 9.00-9.40 (9.17), 
bill from tip to frontal angle 1.65-1.80 (1.75), depth at base .95-1.10 
(1.03), width .75-.85 (.81), width of nail .35, tarsus 1.50-1.60 (1.57), 
middle toe 2.45-2.50 (2.47). Adult female : Brown of head (usually a 
deep sepia or purplish snuff-brown), descending to middle of neck, all 
round; gray of chest broader, and usually deeper, and white collar nar- 
rower, than in same sex of G. clangula; greater wing-coverts always @) 
distinctly tipped with blackish ; nail of bill not less than .23 wide; wing 
8.25-8.75 (8.46), bill from tip to frontal angle 1.40-1.70 (1.56), depth at 
base .80-.95 (.88), width .70-.80 (.73), width of nail .23-.30 (.26), tarsus 
1.30-1.60 (1.46), middle toe 2.10-2.25 (2.19). Hggs 2.47 x 1.77, dull pea- 
green or pale grayish pea-green. Hab. Northern North America, breed- 
ing from Gulf of St. Lawrence and Rocky Mountains of Colorado north- 
ward; Greenland; Iceland; south, in winter, to New York, Illinois, 
Utah, etc.; accidental or occasional in Europe. 
152. G. islandica (GmEL.). Barrow's Golden-eye. 
1 Anas clangula Linx., §. N. ed. 10, i. 1758, 125. Glaucionetta clangula Stzsn., Proc. U.S. Nat. Mus. vii. 
1885, 409. 
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