GLAVCIOXETTA. 105 



i'. 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.G5-1.80 

 (1.73), depth of bill at base .95-1.05 (.99), width .70-.75 (.74), width of 

 nail .1S-.20, tarsus 1.30-1.55 (1.43), middle too 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-.6S (.05), 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 (Li.vx.). Golden-eye.' 

 6». 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 1.50-1.150 (1.57), middle toe 2.40-2.60 (2.45). Female: Length 

 about 1G.50, wing 7.90-8.30 (8.14), bill from tip to frontal angle 1.60- 

 1.75 (1.64), depth at ba.so .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 fi'om 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 .7.n-.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). Eggs 2.47 X 1-77, dull pea- 

 green or pale grayish pea-green. Hah. Northern North Amcinca, 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 Eurojio. 



152. G. islandica (C;mel.). Barrow's Golden-eye. 



I Anat clani/ula Lvtu., S. N. ed. 10, i. 175S, 125. Glaucionelta clangula Stejs., Proo. U. S. Nat. Mas. vii. 

 1SS5, 4U9. 



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