avon | Fijteenth Supplement to the A. O. U. Check-List. 295 
first 12 of these cases the names involved are allowed to stand as in 
the previous editions of the Check-List, with the exception of the 
case of Chemepelia, which in the present Supplement (below, p. 300) 
is adopted in place of the untenable name Colwmbigallina. ‘The 
last four names are the ‘Swainsonian genera,’ of late under con- 
troversy but now accepted in accordance with the law of priority. 
The list of ‘deferred cases’ is now reduced to 12, 11 of which 
relate to the status of forms that have been described as species or 
subspecies, and one is a case of nomenclature. In each of these 
cases the Committee has been unable to secure material for their 
proper consideration. 
(J. A. ALLEN, Chairman. 
| CuHarLES W. Ricumonp, Secretary. 
WILLIAM BREWSTER. 
Committee. +} JONATHAN Dwiaut, Jr. 
C. Hart Merriam. 
Ropert Rip@way. 
| WITMER STONE. 
I. ADDITIONS TO THE CHECK-LIST. 
133a. Anas rubripes tristis BREWSTER. 
Black Duck. 
Anas rubripes tristis BREwsTeR, Auk, XXVI, April, 1909, 176. 
197.1. Egretta candidissima brewsteri ‘THAYER & Banas. 
Brewster’s Snowy Egret. 
Egretta candidissima brewstert ‘THAYER & Banas, Proc. New 
Engl. Zo6l. Club, IV, April 29, 1909, 40. 
301b. Lagopus lagopus alexandre J. GRINNELL. 
Alexander’s Ptarmigan. 
Lagopus alecandre GRINNELL, Univ. Calif. Pub. Zoél., V, No. 
2, Feb. 18, 1909, 204. 
302e. Lagopus rupestris chamberlaini CLark. 
Adak Ptarmigan. 
Lagopus rupestris chamberlaint CLARK, Proc. U.S. Nat. Mus., 
XXXII, No. 1539, June 15, 1907, 469. 
