GLA UCIONETTA. 1 Q5 



6 1 . 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 (1.43), 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-.S5 (.81), width .60-.68 (.65), width of nail .18, tarsus 

 1.10-1.45 (1.32), middle toe 1.80-2.45 (2.05). HaJb. Northern portions of 

 eastern hemisphere. 



G. clangula (LiNN.). Golden-eye. 1 



b 2 . 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-.S5 (.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. Hob. 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 2 . 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-.S5 (.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 bifl 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). Eggs 2.47 X 1-77, dull pea- 

 green or pale grayish pea-green. Hob. Northern North America, breed- 

 ing from Gulf of St. Lawrence and Eocky 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 LINN., S. N. ed. 10, i. 1758, 125. Glaucionetta clangula STEJN., Proc. U. S. Nat. Mus. vii. 

 1885, 409. 



14 



