NEW YORK STATE MUSEUM 1 9 



It reaches almost to the southern boundary of the State in Chautau- 

 qua county and eastwardly an infested town borders upon Wyoming 

 county. 



The following is a list of the infested counties, cities and towns 

 in the western area: 



Cattaraugus county. Ashford, Dayton (1919), East Otto, Leon, 

 Otto, Perrysburg, Gowanda (1919) and Persia (1919). 



Chautauqua county. Arkwright (1920), Charlotte, Chautauqua, 

 Cherry Creek, Dunkirk (1919), Dunkirk (city, 1920), Ellery, Elli- 

 cott, Gerry, Hanover (Silver Creek, 1919), Mina, Pomfret (Fre- 

 donia, 1919), Portland (Brocton, 1920), Ripley, Sheridan (1919), 

 Sherman, Stockton, Villenova (1920) and Westfield (1920). 



Niagara county. Niagara (1920) including city of Niagara Falls. 



Eric county. Amherst (1920), Aurora, Boston, Brant, Angola 

 (1919), Buffalo (city, 1920), Cheektowaga (1919), Clarence, Col- 

 lins (1919), Concord, East Hamburg (1920), Eden (1919), Elma 

 (1920), Evans (1919), Grand Island (1920), Hamburg (1919), 

 Marilla, North Collins (1919), Tonawanda (1920), Tonawanda 

 (city, 1920) and West Seneca (1920). 



The distribution of the European corn borer in America at the 

 close of the past season may be summarized as follows: The infes- 

 tation in New England includes a strip along practically the entire 

 eastern coast of Massachusetts with a small extension in southeastern 

 New Hampshire and Maine. The Canadian infestation occurs along 

 practically the entire northern shore of Lake Erie, the extreme north 

 and south dimensions being about 40 miles and the infested terri- 

 tory extending to the eastern shore of Lake Huron and with an 

 apparently isolated area on Lake Ontario, some 20 miles east of 

 Toronto. The most seriously infested territory in the vicinity of 

 St Thomas has a north and south extension of about 15 miles and 

 an east and west dimension of 40 miles. There are in addition to 

 the above the New York areas and the sparse infestation along the 

 entire southern shore of Lake Erie, mentioned above. This wide- 

 spread distribution has led to the abandonment of the attempt to 

 exterminate the insect, even in the case of some isolated infesta- 

 tions, and a corresponding modification in quarantine and control 

 measures. 



Observations in New York State. The summer of 1919 showed 

 marked differences in the development of the borer in New York 

 State as compared with Massachusetts. For example, female moths 



