246 
Larus leueopterus, 
1876, 
Apr, 11, Among a flock of seine thirty large Gulls-in East- 
port Harbor, Maine, this species and L. glaucus were about 
equally represented,the tv/o together perhaps* forming one- 
quarter of the total number, the remaining three-quar¬ 
ters being Herring Gulls, This species as v/ell as the 
Glaucus seemed to be lighter and more graceful on thw wirg 
than the Herring Gull, The difference in size betv/een 
the three v/as only appreciable when the birds came very 
near, Sove al of thcan follov/-od the steamer all the v/ay 
from Mt,Desert, 
