CXLVIII. 

 LARUS GLAUCUS. (Brunn. 



Glaucous Gull. 



The only specimen of the egg of the Glaucous Gull pre- 

 served in the cabinets of this country, which is in the collec- 

 tion of Mr. Leadbeater, of London, was brought home by one 

 of the Arctic expeditions of discovery. 



It much resembles eggs of most of the other Gulls, and 

 would not readily be known from varieties of the Greater and 

 Lesser Black-backed and Herring Gulls. 



Dr. Richardson describes the Glaucous Gull as a common 

 species in Greenland, Baffin's Bay, and the Polar Seas, where 

 it breeds, upon the precipitous rocks which form that coast. 



