ANATIDJS — THE SWANB, GEESE, AND DUCK8. 131 



Subgenus Querquedula vStephens, 



Quenjuedula Stephens, Shaw's Gon. ZooL xii, pt ii, 1824. 1-12. Typo. Anas querquedula 



Linn . 

 Gyanopterus Eyton. Moq. Anat 1838. 38. Type? (Not of HalJiday, 1835.) 

 Pterovyanea Bonap. Gat. Met. 1842. 71. Type? 



SuBOEN. Chak. Size small (wing loss than 8 inches). Bill slightly longer than the 

 head, the edges nearly parallel, the maxillary tomium sinuated, so as to distinctly ex- 

 pose the lamelliB for the basal half, and the terminal half of the culmen slightly but dis- 

 tinctly arched. Otherwise much like li'ettion. 



The two North American species of Querquedula agree very closely in the details of 

 form, in which respect they scarcely differ from the type of the genus, the Q. querquedula 

 of Europe. The coloration of the wing, which is almost exactly that of Spatula, is also 

 essentially the same in these three species. The females are very different from the 

 males, except in the colors of the wing, being much duller. The following are the main 

 differential characteristics of the North American specie? : 



1. A. discors. Adult male: Head and neck dull plumbeous, with a faint lavender- 

 purple gloss on the sides of the occiput; pileum blackish; a large white, some- 

 what crescent- shaped, mark before the eye, entirely across fore part of the head; 

 lo^er parts pale reddish, spotted with black. 



2. A. oyanoptera. Adult male: Head, neck, and lower parts rich uniform chestnut, 



the abdomen duller (sometimes dusky), the pileum blackish. 



Anas discors Linn. 



THE BLUE-WINGED TEAL. 



Popnlar synonyms. Blue- wing; White-face, or White- faced Teal; Summer Teal; Cer- 



ceta eomuji (Mexico). 

 Anas discors Linn. S. N. ed. 12, i. 1766, 205.— Wils. Am. Cm. viii, 1814, 74, pL 68, flg. 



4.— Add. Orn, Biog. iv, 1838, 111, pi. 313; Synop. 1839. 282; B. Am. vi, 1843, ^7, pi. 



393.— A. O. U. Check List, 1886, No. 140.— Kidgw. Man. N. Am. B. 1887, 93. 

 Anas (Boschas) discors Sw. & BicH. P. B.-A. ii, 1831, 444.— Nutt. Man. ii. 1834. 397. 

 Querquedula discors Stephens, Shaw's Gen. Zool. xii, pt. ii,1824. 149.— Baibd.B. N. 



Am. 1858, 779; Cat. N. Am, B. 1859, No. 581.— CouES. Key, 1872, 2«7: Check List, 



iSTi. No. 496; 2d ed. 1882. No. n6; Birds N. W. 1874. 566.— Hknsh. Zool. Wheeler's 



Exp. 1875, 476.— Kn>GW. Orn. 40th Par. 1877, 623; Nom. N. Am. B. 1881, No. 609.— 



B. B. & E. Water B. N. Am. i, 1884, 53L 

 Sarcella m.dle de Cayenne, dite le Soucrourou, Buff. PI. Enl. 966 (male ad.). 



Hab. North America in general, but chiefly the liastern Province; north to Alaska, 

 south in winter throughout West Indies, Central America, and northern South 

 America as far as Ecuador. Accidental in Emope. 



Sp. Chab. Adult male: Head and neck dull plumbeous, slightly grossed with laven- 

 der-purple on the side of the occiput and nape, and marked in front of the eyes by a 

 large, sonaewhat ereseentie, patch of white, extending entirely across the anterior por- 

 tion of the head; pileum. cliin, and feathers bordering the white patches, blackish; 

 lower parts pale chestnut, or reddish buffy, thickly spotted with black, the crissum uni- 

 form black. Back and anterior scapulars dusky, marked with concentric or U-shaped 

 bars of pale reddish buff; lessor wing-coverts and outer webs of some of the longer 

 p<^apulars pale blue; middle coverts white for the exposed portion, forming a bar across 

 the wine; speculum bronzy green, dusky terminally, with a very narrow white tip; ter- 



