104 Ninth Supplement to the A. O. U. Check- List. [JJ 



140. Querquedula discors (Linn.). 



Anas discors Linn. S. N. ed. 12, I, 1766, 205. 



Querquedula discors Stephens, Gen. Zool. XII, ii, 1824, 149. 



141. Querquedula cyanoptera (Vieill.). 



Anas cyanoptera : Vieill. Nouv. Diet. d'Hist. Nat. V, 1816, 



104. 

 Querquedula cyanoptera Cassin, 111. Bds. Cal. 1855, 82. pi. xv. 



148. Aythya marila nearctica Stejn. This becomes 

 Aythya marila (Linn.). 



Anas marila Linn. S. N. ed. 12, I, 1766, 196. 

 Aythya marila Boie, Isis, 1822, 564. 



Geog. Dist. — Northern part of northern hemisphere, breeding 

 far north. South in winter to Guatemala, Japan, China, Formosa, 

 and the Mediterranean. 



The American and Old World birds are not satisfactorily dis- 

 tinguishable. (Cf. Bishop, Auk, XII, 1895, 293; Sharpe, Cat. 

 Bds. B. M. XXVII, 1895,359; Elliot, Wild Fowl, 1898, 286.) 



151. Clangula clangula americana (Bonap.). (Cf. Eighth 

 Suppl.) The authority for the combination should be 

 Clangula clangula americana Faxon, Auk, XIII, 1896,215. 



159. Somateria molli||inia_boreaJLis (Check-List, 2d ed., 

 p. 57. The authority should be C. L. Brehm, and the first 

 reference, inadvertently omitted, is 



Somateria borealis C. L. Brehm, Isis, 1830, 998. 



Genus EXANTHEMOPS Elliot. Admitted as a subgenus 

 of Chen Boie, to include No. 170, Chen rossii (Cassin). 



Exanthetnops Elliot, 111. Am. Bds. II, 1869, pi. xliv. 

 Type, Anser rossii Cassin. (Cf. Elliot, Wild Fowl, Nov. 

 1898, 44.) 



