ENTOMOLOGICAL NEWS. 



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PHILADELPHIA, PA., APRIL, 1911. 



THE PERIODICAL CICADA IN 1911. 



Circular No. 132 of the Bureau of Entomology, U. S. Dept. 

 of Agriculture, by Mr. C. L. Marlatt, Assistant Chief of the 

 Bureau, dated February 13, 1911, calls attention to the Period- 

 ical Cicada of the present year. Two important broods of 

 this insect, misnamed "locust," will appear. "One of these 

 belongs to the 17-year race and extends from New York south- 

 ward into North Carolina, in general lying east of the Alle- 

 gheny Mountains." Technically it is known as Brood II and, 

 although occurring in part of the same territory, must not be 

 confused with the great brood X-- of the years 1902 and 

 1919. Brood II seems not to have appeared in any locality in 

 sufficient abundance to receive a star (*) in Mr. Marlatt's 

 records, f the device employed to indicate places (counties) 

 where "the cicada occurred in one or more dense swarms." 

 Observations made by Mr. H. H. Brehme, in Cape May County, 

 New Jersey, in November, 1910, and published in the NEWS 

 for March, 1911, page 142, hold out the possibility of such a 

 dense swarm next summer. 



The other brood due in 1911 is XXIII "of the southern, or 

 13-year race, and covers the lower half of the Mississippi Val- 



fSee especially Bulletin No. 71 of the Bureau, 1907. 



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