Auk 
Jan. 
gs Ninth Supplement to the A. O. U. Check-List. 
Genus URINATOR Cuvier. ‘This becomes 
Genus GAVIA Forster. 
Gavia Forstrr, Enchirid. Hist. Nat. 1788, 38. No type, 
but based exclusively upon ihe Loons. (Cf ALLEN, Auk, 
XIV, July, 1897, 312.) Hence Nos. 7 to 11 will stand as 
follows: 
7. Gavia imber (GUNN.). 
Colymbus imber Gunnerus, Trondh, Selsk, Skr. I, 1761 
pl. i, 
Gavia imber ALLEN, Auk, XIV, July, 1897, 312. 
8. Gavia adamsii (Gray). 
Colymbus adamstt GRAY, P. Z. 5. 1859, 167, 
Gavia adamsti ALLEN, Auk, XIV, July, 1897, 312. 
9, Gavia arctica (LINN.). 
Colymbus arcticus Linn. S. N. ed. ro, I, 1758, 135. 
Gavia arctica ALLEN, Auk, XIV, July, 1897, 312. 
10. Gavia pacifica (LAwr.). 
Colymbus pacificus LAwr. in Baird’s Bds. N. Am, 1858, 889. 
Gavia pacifica ALLEN, Auk, XIV, July, 1897, 312. 
11. Gavia lumme (GuUNN.). 
Colymbus lumme GuNNéERUS, Trondh, Selsk. Skr. I, 1761, pl. 
Ly io Bs 
Gavia dumme ALLEN, Auk, XIV, Ju’y, 1897, 312. 
Genus GAVIA Bore (Check-List, 2d ed., p. 15). This becomes 
Genus PAGOPHILA Kavp. 
Pagophila Kaur, Skizz. Entw.-Gesch. Eur, Thierw. 1829, 69. 
‘Type, Larus ehurneus PHirpps=JZ. albus GuNN. (Ch 
Cougs, Auk, XIV, July, 1897, 313.) 
