THE INSECT WORLD. 



145 



Brood XIV. will appear in 1896, and covers Western Missouri, 

 extending into Kansas, Arkansas, Iowa, Northern Texas, and 

 Indian Territory. 



Brood XV. will occur in 1897 i'"' Western Pennsylvania and 

 Ohio, extending into Kentucky and West Virginia. 



Brood XVI. appeared last in 1893 ^i^d will appear again in 

 1906, being of the thirteen-year race. It occurs in the northern 

 portion of Georgia, but its limits are not well defined. 



Brood XVII. will appear next in 1898 and at intervals of 

 seventeen years thereafter. It occurs in Wisconsin, the north- 

 ern part of Ohio, Pennsylvania, and parts of New York, as well 

 as isolated localities in New Jersey. The brood is a small one, 

 however, especially in the southern part of its range, and appar- 

 ently dying out. 



Brood XVIII. occurred in 1894 and will occur again in 1907, 

 being of the thirteen-year race. It is a very well-recorded one, 

 and covers Southern Illinois, nearly all of Missouri, Louisiana, 

 Arkansas, Indian Territory, Kentucky, Tennessee, Mississippi, 

 Alabama, Georgia, North and South Carolina. 



Brood XIX. occurred last in 1882 and will occur again in 



1899. It is a small one and confined to a few counties in Central 

 and Northern New York, — that is, Monroe, Livingston, Madi- 

 son, Yates, and, perhaps, those immediately adjoining. 



Brood XX. appeared last in 1883 and will appear again in 



1900. It occurs in Western New York and Pennsylvania and 

 Eastern Ohio. It is a small brood and does not attract attention. 



Brood XXI. occurred last in 1884 and will occur again in 



1901. It covers parts of North Carolina, Virginia, and West 

 Virginia, and may possibly occur in Massachusetts (Martha's 

 Vineyard) as well. 



Brood XXII. appeared last in 1885 and will appear again in 



1902. It occurs on Long Island, in New York, New Jersey, 

 Pennsylvania, Delaware, Maryland, District of Columbia, Vir- 

 ginia, West Virginia, North Carolina, Tennessee, Georgia, Ohio, 

 Kentucky, Indiana, Ilhnois, Michigan, and Wisconsin. Brood 

 VII., of the thirteen-year race, and Brood XXII., of the seventeen- 

 year race, come in contact in Southern Illinois and Northern 

 Georgia, and it may happen, as it did in 1885, that these two 

 broods appear during the same year at the same place. 



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