ORDER PYGOPODES. 31 
RanGE.— Arctic regions of both continents. Breeds on Arctic 
islands south to northern Hudson Bay and mainland of Siberia; 
winters in Arctic Ocean and casually south to Norton Sound and 
Lake Ontario; north in migration to latitude 84°. 
Cepphus colimba PaLias. Pigeon Guillemot. [29.] 
Cepphus columba Pauuas, Zoogr. Rosso-Asiatica, II, 1826 (18117), 348. 
(Kamchatka, and Straits between Siberia and Alaska.) 
RanGeE.— Coasts and islands of the Arctic Ocean, Bering Sea, and 
Cape Lisburne and both coasts of the North Pacific from Bering Strait 
south to Santa Catalina Island, California, and to northern Japan. 
SuspraMiLy ALCINAS. Auxs anp MurRREs. 
GENUS URIA Brisson. 
Uria Brisson, Orn., VI, 1760, 70. Type, by tautonymy, [Uria] uria 
Brisson = Colymbus troille LINN&Us. 
Uria troille (LINN &Us). 
Rance.— Coasts and islands of the North Atlantic and North Pacific. 
a. Uria troille troiile (Linnazus). Murre. [30.] 
Colymbus troille Linnwzxus, Fauna Suecica, ed. 2, 1761, 52. (Spitz- 
bergen.) 
RanGe.— Coasts and islands of North Atlantic. Breeds in North America 
from southern Greenland and southern Ungava south to Newfoundland and 
Magdalen Islands; winters south to Maine. 
b. Uria troille californica (H. Bryant). California Murre. (30a.) 
Catarractes californicus H. Bryant, Proc. Bost. Soc. N. H., VIII, 1861, 
142. (Farallon Islands, California.) 
RancGE.— Coasts and islands of the North Pacific. Breeds from Norton 
Sound and Pribilof Islands south to the Farallones, California; winters from 
the Aleutian Islands south to Santa Moniea, California. 
Uria l6mvia (LINN &Us). 
RanGE.— Coasts and islands of the North Atlantic, North Pacific, 
and Arctic oceans. 
