Vol, XVI 
1899 
Ninth Supplement to the A. O. U. Check-List. eye) 
39. Gavia alba (GunN.). This hence becomes 
Pagophila alba (Guny.). 
Larus albus GUNN. in Leem’s Beskr. Finm. Lapp. 1767, 285. 
Pagophila alba Cours, Auk, XIV, July, 1897, 313 
\* 
6+. Sterna tschegrava Leprcu. This becomes 
Sterna caspia Pa.sas. 
Sterna caspia Pauas, Nov. Comm. Petrop. XIV, 1770, 582, 
pl. xxii, fig. 2. 
This change is made on the grounds (tr) that Leprouin was 
not binomial in the article in which he named Sterna tschegrava, 
and (2) that Sterna caspia PALLas, of even date, was the name 
first used by a subsequent author. (Cf Couns, Auk, XIV, July, 
1897, 314.) 
SUBGENUS HALIPLANA Wac.er (Check-List, 2d ed.,, p. 26). 
This becomes 
SUBGENUS ONY CHOPRION WAGLER. 
Onychoprion Wac.eEr, Isis, 1832,277. Type, Sterna serrata 
FORSTER = S. fudiginosa GMEt. (Cf Cours, Auk, XIV, 
July, 1897, 314.) 
82.1. Diomedea immutabilis Roruscu. 
Laysan Albatross. 
Diomedea immutabilis RoruscHiLp, Bull. Brit. Orn. Club, 
No. IX, June, 1893, p. xlviii, 
[B—,C—,R—,C —.| 
Geoc. Dist, — Laysan Islands; San Geronimo and Guadalupe 
Islands, Lower California. (Cf AntHony, Auk, XV, Jan, 1898, 
35.) 
Famity PROCELLARIID.2#® (Check-List, 2d ed., pp. 29- 
35). For the two present subfamilies (PROCELLARIINA and 
