236 NEW YORK STATE MUSEUM 



Brood 8.' This is no. 6 of Messrs Walsh and Riley and was the one Dr 

 Fitch confused with the 13 year brood which occurred in 1855. It has 

 been recorded only from Long Island. It is due to appear in 1906. 



Brood 12. This is one of the best recorded broods since it occurs 

 very largely in the thickly populated regions of the Eastern States. This 

 facilitates its observations very much. It is the brood which occurred 

 in New York State and was very closely studied by Dr Lintner in 1894. It 

 is Ur Fitch's no. i, and Walsh and Riley's no. 8. It has been recorded 

 from Albany, Columbia, Dutchess, Greene, Orange, Putnam, Richmond, 

 Rensselaer, Rockland, Saratoga, Ulster, Washington and Westchester 

 counties and from Long Island. It appears next in 191 i. 



Brood 17. This is no. 7 of Dr b^itch's, and no. 12 of Messrs Walsh 

 and Riley. It was recorded from Richmond and Westchester counties in 

 1898, and it will therefore not be seen again till 1915. 



Brood 19. This brood was founded by Dr Riley on the records of Dr 

 .Smith's register which runs back to 1797. It is recorded as appearing in 

 Cayuga, Kings, Livingston, Madison, Monroe, Onondaga, Ontario, Rich- 

 mond, Schenectady, W^yoming and Yates counties, and is due to appear in 

 19 1 6. 



Brood 20. This is Dr P'itch's second brood and no. 14 of Walsh and 

 Riley. It is due to appear next in 191 7. It has been recorded in New 

 York State, so far as known to us, from only one locality in the extreme 

 southwestern portion of Chautauqua county. 



Brood 22. This is one of the largest broods which occurs in the 

 United States. It appeared in New York in 1902. It has been recorded 

 from Kings, Monroe, Niagara and Richmond counties. A recent report 

 froni Chester Young states that this brood appeared in 1902 in localities 

 in Nassau and .Suffolk counties. It probably occurs also in Queens county. 

 It is not due again till 1919. 



Natural enemies. This insect occurs in such large numbers that it fre- 



■ Tlie compreliennive numbering of Dr ]\[arl;Ut has been adopted as being more 

 lii<ely to be permanent. 



