Vol. XX 
oe Twelfth Supplement to the ANOMU Check 7St. 2at 
SE WELEEH. SUPPLEMENT “TO. PHE AMERICAN 
ORNITHOLOGISTS’ UNION CHECK-LIST OF 
NORTH AMERICAN BIRDS.’ 
Two sessions of the Committee have been held in Washington 
since the appearance of the last Supplement. At the first meet- 
ing (November 21, 1902) questions of generic and subgeneric 
rank only were considered, and much progress was made toward 
eliminating these from the category of deferred cases. In April 
(16 to 18) of the present year a longer meeting was held, at which 
many additional cases were discussed, but action on certain gen- 
eric names (¢. g., Horizopus) was again postponed, owing to lack 
of time for their proper consideration. 
The list of deferred cases is still formidable, but it is hoped that 
at the next meeting of the Committee the number of such cases wil! 
be very materially reduced. 
(C. Harr MErRRIAM, Chairman. 
| J. A. ALLEN. 
| WILLIAM BREWSTER. 
Committee. JonaATHAN DwiGHT, JR. 
| CHARLES W. RICHMOND. 
| Ropert RipGway. 
| WitMER STONE. 
in ADDITIONS TO THE CHECK-LIST AND ACCEPTED 
CHANGES IN NOMENCLATURE. 
6a. Fulmarus glacialis minor (KJarRB@LiinG). This is 
eliminated from the Check-List as indistinguishable from /. 
glacialis, the alleged characters being the result of sexual or 
1 Four Supplements have been issued since the publication of the Second 
Edition of the Check-List in 1895: 
Eighth Supplement, Auk, XIV, 1597, pp. 117-135. 
Ninth Supplement, Auk, XVI, 1899, pp. 97-133- 
Tenth Supplement, Auk, XVIII, 1901, pp. 295-320. 
Eleventh Supplement, Auk, XIX, 1902, pp. 315-342. 
