40 



LAMELLIROSTRAL SWIMMERS — ANSERE8. 



ciilinen ; tail rather long (about half the wing), of sixteen feathers, 

 in the male, brow n and white in the female. 



This genus comes neurest in its characters to Ilistrionicus, but is ([uite distinct, 

 are known, their special ch invt'jrs being as follows : — 



Com. Char. Adult: Ileal and upper part of the }ieck black, with metallic reflections, and with 

 a patch of white, varjing in form with the species ; lower part of the neck, all round, entire lowtr 



Colors, pied white and black 

 Three species 





C, glaucion. 



parts, part of scapulars, wing-coverts, and secondaries white ; other upper parts black. Femalt : 

 The black replaced by brown, the white absent from the head (except in B. ulbeulu), and mure 

 restricted elsewhere. 



A. Size rather large (wing, 7.40 inches or more) ; male with a white spot before the eye ; female 

 without white on the head. 



1. C. islandica. Male : White patch on lores wedge-shaped, the head glossed with bluish vio- 



let ; a broad black bar between the white of the middle and greater wing-coverts. Female 

 Head dark sepia or purplish snuff-brown ; a distinct black Ijar across the ends of tlie 

 greater wing-coverts. Wing, 8.25-9.40 inches ; length of bill to point of basal angle, 

 1.40-1.80; tarsus, 1.30-1.60; middle toe, 2.15-2.50. Hah. Northern North America, 

 breeding far southward (at least to Colorado) in higher portions of Rocky Mountains; 

 Greenland ; Iceland ; accidental in Europe. 



2. C. glaucion. Male: White patch on lores roundish ; white patch of wings not interrupted 



by a black bar. Fenuile : Head grayish umber-brown ; white wing-patch usually con- 

 tinuous. 

 a. Glaucion.^ Male adult: Wing, 8.50 inches ; bill from tip to basal angle, 1.70-1,80; tar- 

 sus, 1.30 ; middle toe, 2,20, Hab. Paloearctic Region. 



1 Clanoula glaucion, Linn. The Golden-eye. 



A7ias clangiila, Linn. S. N. ed. 10, I. 1758, 125 ; ed. 12, I. 1766, 201. — Naum. Viig. Deutschl. 



XIL 1844, 162, pi. 316. 

 Olaucion clangula, Kaup, Natiirl. Ryst. 53. — Kkvs. & Blas. Wirb. Eur. 1840, Ixxxvi. 

 Anas glaucion, Linn. S. N. cd. 10, 1. 1758, 126 ; ed. 12, I. 1766, 201. 



Clangula glaucion, Brehm, Vbg. Deutschl. 929. — Guav, Gen. B. III. 622 ; Cat. Brit. B. 1863, 202. 

 Anas hyemalis. Pall. Zoog. Rosso. As II. 182ii, 270. 

 Clangula chrysojitlmlmos, Stki'H. Gen. Zool. XII. pt. ii. 182, pi. 56. — Bonap. Conip. List, 1838, 



58. — Macgill. Man. IL 183. 

 Clangula vulgaris, Flkm. Brit. Aniin. 1828, 120. 



Clangula Icucomelas and C. percgrina, Brkum, Viig. Deutschl. 1831, 927. 

 Golden-eye, Yarr. Brit. B. ed, 2, III, 368, fig. ; cd. 3, III. 371, fig. 



