LESSER BLACK-BACKED GULL. 
165 
The egg figured 311 is that of the Lesser Black-backed 
Gull. 
We subjoin a repetition of the dimensions of the two spe¬ 
cies in question, for comparison: namely,— 
The entire length of the herring gull is twenty-seven 
inches ; the wing measures seventeen and a quarter inches. 
The entire length of the Lesser Black-backed Gull is 
twenty-four inches ; the wing measures seventeen inches. 
