1O4 Ninth Supplement to the A. O. U. Check-List. pile 
Jan. 
140. Querquedula discors (Linn.). 
Anas discors LINN. S. N. ed. 12, I, 1766, 205. 
Querquedula discors SreeHENS, Gen. Zool. XII, ii, 1824, 149. 
I41. Querquedula cyanoptera (VIFILL.). 
Anas cyanoptera Vieitu. Nouv. Dict. d'’Hist. Nat. V, 1816, 
104. 
Querquedula cyanoptera Cassin, Ill. Bds. Cal. 185 5, 82, pl. xv. 
148. Aythya marila nearctica Srey. This becomes 
Aythya marila (LINN.). 
Anas marila Linn. S. N. ed. 12, I, 1766, 196. 
Aythya marila Bork, Isis, 1822, 564. 
Geroc, Distr. — 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 Bisnop, Auk, XII, 1895, 2933; SHARPE, Cat. 
Bds. B. M. XXVII, 1895, 359; Evtiot, Wild Fowl, 1898, 286.) 
lol. Clangula clangula americana (Bonar.). (Cf. Eighth 
Suppl.) The authority for the combination should be 
Clangula clangula americana Faxon, Auk, XIII, 1896, 215. 
159. Somateria mollissima borealis (Check-List, 2d ed., 
p- 57. The authority should be C. L. BRenHm, and the first 
reference, inadvertently omitted, is 
Somaterta borealis C, L. BREHM, Isis, 1830, 998. 
Genus EXANTHEMOPS Ex-tior. Admitted as a subgenus 
of Chen Botr, to include No. 170, Chen rossit (CASSIN). 
Exanthemops Exvxiot, Ill. Am. Bds. II, 1869, pl. xliv. 
Type, Anser rossit Cassin. (Cf. ELuiotr, Wild Fowl, Nov. 
1898, 44.) 
