URiA. 277 



Genus URIA Brisson, Orn. vi. 1760, p. 70. 

 Type : U. troille (Linn.). 



Url,a=oipia, a water-bird mentioned by Athenseua, 395 D.; cf. Sanskrit 

 tidri=water, oi5po>'= urine, a'pv6«rijp=adiver, Latin unnor^l dive, etc. 



TJria troille. Common Guillemot. 



Colymbus troille Linnceus, Fauna Suecica, 2nd ed. 1761, 

 p. 52 : Spitsbergen. 



Lomvia troile (Linn.') ; £. O. TT. List, 1st ed. 1883, p. 206. 

 TJria troile (Linn.) ; Ogilvie-Qrant, Gat. Birds B. M. xxvi. 1898, 

 p. 573 ; Saunders, Manual, 2nd ed. 1899, p. 699. 



Troille, said to be intended ae a compliment to Troil the Icelander. 



Distribution in the British Islands. — A Resident, breeding 

 usually in large colonies, on suitable sea-cliffs throughout 

 the United Kingdom, arriving towards the end o£ March or 

 in April, and remaining till autumn, when the young bird 

 is taken to sea by its parents. In winter it is common in 

 the seas round our coasts, but is said to be scarce at that 

 season round Ireland. 



General Distrilndion. — The Common Guillemot breeds on 

 the coasts and islands of the north Atlantic and Pacific 

 Oceans and Bering sea . in the Atlantic from Iceland, the 

 Faeroes, and Varan ger-Fjord, Norway, south to the west 

 coast of France and even to the Berlenga Islands off 

 Portugal ; also from south Greenhind, south of about 

 64° N. latitude, and Ungava to Newfoundland and the 

 Magdalene Islands ; in Bering sea it is found nesting in 

 the Commander, Pribilof, and Aleutian Islands, apparently 

 wandering north to Wrangel and Herald Islands, and on 

 the east Pacific coast as far as the Farallones and California 

 to 36° N., and on the west perhaps to Japan. In winter 

 it goes south to about 30° N. in the Atlantic and occasion- 

 ally enters the Mediterranean, and to Maine in America ; 

 in the Pacific to California in 34° N. latitude and to 



