256 LARID^E. 



Larus glaucus, GLAUCOUS GULL. 



Larus glaucus BriinnicJi, Orn. Bor. 1764, p. 44 : Iceland. 



Larus glaucus Fair.; B. O. V. List, 1st eel. 1883, p. 187; 

 Sounders, Cat. Birds B. 31. xxv. 1896, p. 289 ; id. Manual > 

 2nd ed. 1899, p. 679. 



Glaiicus=y\avic6s, bluish -grey. 



Distribution in the British Islands. A Winter Visitor. It 

 has been met with in summer in the Shetland Islands, but 

 is not known to breed there. In winter it occurs regularly 

 and sometimes abundantly in the Outer Hebrides and on the 

 east coast of Great Britain from the Shetlands, as far south 

 as Norfolk, but on the south and west coasts it is irregular 

 and rare. It has frequently been recorded from Ireland, and 

 appears to be an annual visitor, especially on the north and 

 west coasts. 



General Distribution. The Glaucous Gull breeds in the 

 Arctic regions of both hemispheres, where many pass the 

 winter, but others migrate southwards to the A/ores, Medi- 

 terranean, Black, and Caspian seas ; to Japan and California 

 in the Pacific ; to the Great Lakes and Mississippi valley in 

 North America, and on the east coast to the Bermudas, 

 Florida, and Texas. It is represented by allied forms in 

 North America, along the Pacific coast, in Alaska, and 

 in Arctic America. 



Larus leucopterus. ICELAND GULL. 



Larus leucopterus Faber, Prodr. island. Orn. 1822, 

 p. 91 : Iceland. 



Larus leucopterus JFaber ; B. O. U. List, 1st ed. 1883, p. 188 ; 

 Sounders, Cat. Birds B. M. xxv. 1896, p. 295 ; id. Manual^ 

 2nd ed. 1899, p. 681. 



Leucoptmt,s = white-winged : from Xevso's and rrrepo'i'. 



Distribution in the British Islands. A Winter Visitor, 



