SLENDER-BILLED GULL. 101 



two years or after the second autumnal moult, have 

 tlie liead, neck, and lower parts of the body white; 

 upper parts ash, with the wing coverts brown russet, 

 bordered with tints more clear; the four first primaries 

 white, bordered and terminated with brown black, the 

 others bordered with ash and tipped with wliite; tail 

 white, terminated by a transverse brown band, and a 

 border of russet grey. 



In some respects this description accords with the 

 specimen from which my figure and description are 

 taken, but in that the tail is pure white. 



It has also been figiu'ed by Bonaparte, in Icon. 

 Faun. Ital., fascic 43, fig. 1. 



