ANATID^— THE SWANS, GEESE, AND DUCKS. 135 



it were, so as to fully expose the lamellae. Through the forms 

 occurring; in the southern hemispherej this genus leads directly 

 to PcBcilonetta, which in turn is intermediate het^Neeo., Ifettion and 

 Dafila. 



The two species of Nettion occurring iu the northern hemi- 

 sphere are much alike, the males being very handsome in 

 plumage. They may be distinguished as follows: 



Common CEi.BAOiEBS. Aduli males: Head and upper halt of the neok chestuut-nifons, 

 marked with a large patch of metallic green on each side oJ the head, behind the eye; 

 chin and upper part of throat dull black; nuchal tuft blue-black; lower part of the neck, 

 upper part of the back, 3eaf)Ulars, and lateral parts of the'body beneath, undulated with 

 black and white; outer scapulars marked with black and white; speculum bright metallic 

 green, the lower feathers black, tipped with white ; erissum black centrally, creamy buff 

 laterally. Adult females: Wing, only, as in the males; elsewhere varied with dusky.and 

 brownish white, the former prevailing above, the latter beneath; the abdomen nearly or 

 quite immaculate. 



1. A. carolinensis. A broad white bar across side of breast, before the wing; inner 

 webs of outer scapulars vermioulated with dusky and brownish white, the outer 

 webs marked with a longitudinal lanceolate spot of black, bordered internally with 

 a white line. 



[2. A. cresoa. No white bar on side of breast; inner web »f outer scapulars wholly, 

 and outer web partly, white, the exposed surface of outer webs almost entirely 

 black: undulations of sides, etc., much coarser than in A. carolinensis. Sab. 

 PalHearctio Region, occasional in eastern North America.] 



A. Grecca, the common teal of Europe, has several times been 

 taken in the Atlantic States, but has not yet been detected in 

 Illinois. 



Anas carolinensis Gmel. 



GBEEN-WINGEO TEAL. 



Popular synonyms. Green-wing; American Green-winged Teal; Ked-headed Teal ; Mud 

 Teal (Maine); Winter Teal (Long Island); Ceroeta de listo verde (Mexico). . 



Anas crecca, var. PopsT. Philos. Trans. Ixii, 1772. 388, 419. 

 Anas iBoschas) crecca, var. Sw. & ElOH. P. B.-A. ii, 1831, 443,— Nutt. Man. ii, 1835, 



400. 

 Anas crecca WiLS. Am. Orn. vili, 1814, 101, pi. 60, flg. 1 (not of LiNN.).— AuD. Orn. 

 Blog. iii, 1835, 218; v, 1839, 616, pi. 228. 

 Anas carolinensis Gmbl. S. N. i, pt. ii, 1878, 533.— AuD. Synop. 1839, 281; B. Am. vi, 1843, 

 281, pi. 392.— A. O. U. Check List, 1886, No. 139.— BiDGW. Man. N. Am. B. 1887, 94. 

 Querquedula carolinensis Stephens, Shaw's Gen.Zo61.xii,pt.ii,1824, 128.— CoTJBB,'Key.^ 

 1872, a87; Check List, 1873, No. 495; 2d ed. 1882, No. 715; B. N. W. 1874, 565.— Hen- 

 BHAW, Zool. Wheeler's Exp. 1875, 475. ' 

 Nettion carolinensis Baibd, B. N. Am. 1858, 777; Cat. N. Am. B. 1859, No. 579.— 

 EiDGW. Orn. 40th Par. 1877, 623; Nom. N. Am. B. 1881, No. 612.-B. B. & B. Water B. N. 

 • Am. ii, 1884, 2. 

 Anas amiericana VlEiLi,. Eno. Meth. 182S, 156. 

 '•Anas ayVoatica Vibill. ?" 



