vores Fourteenth Supplement to the A. O. U. Check-List. dO] 
133. Anas obscura GMELIN. ‘This is changed to 
133. Anas rubripes (BREWSTER). 
Anas obscura rubripes BREWSTER, Auk, XIX, 1902, 184. 
The name Anas obscura GMELIN, 1788, proves to be preoccupied 
by Anas obscura PONTOPPIDAN, 1763, for an Old World species, 
and no other name being available, rubripes of Brewster is adopted 
as a Substitute. (RicumMonp, MS.) here is some question as to 
the validity of the form recognized as No. 133a, which, by the 
above action, is now cancelled. (See Eliminations.) 
GENUS QUERQUEDULA Srepuens. Authority is changed, to 
GENUS QUERQUEDULA OkeEn. 
Querquedula OKEN, Isis, I, 1817, 1183, Type, Anas circia 
Linnus = A. querquedula LINNXUs. 
[141.1.] Casarca casarca (LINN&Us). This becomes 
[141.1.] Casarca ferruginea (PALLAs). 
Anas jferruginea Pauuas, in VROEG’S Cat., 1764, Adumbr., 5. 
(Cf. RicuMonp, Smiths. Mise. Coll., Quarterly Issue, XLVI, 
1905, 346.) 
GeNUS AYTHYA Borer. This becomes 
GENUS MARILA OKEN. 
Marila Oxen; Isis, I, 1817, 1183. Type, Anas marila Lin- 
N&us. (C7. SToNE, Auk, XXIV, 1907, 191; also ALLEN, 
Bull. Am. Mus. N. H., XXIV, 1908, 26.) 
Aythya Bote, 1822, is preoccupied by Aethia (or Aethya) Du- 
MONT, 1816; moreover, its priority over Nyroca FLeminG, 1822, 
has never been satisfactorily demonstrated. 
