NEW JERSEY 



Agricultural Experiment Stations 



THE PERIODICAL CICADA 

 A Circular of 'Warning. 



Brood II. of the periodical Cicada, or, as it is better known, the 

 "17-year Locust,'' appeared in Xew Jersej' in 1894, and is due to ap- 

 pear again in 1911. According to the records gathered in ISOi, the 

 brood covers practically all of Bergen county, scattered areas in Passaic 

 county, small areas near Huntsburg and Papakating in Sussex county, 

 practically all of Morris, Union, Essex and Hudson counties, a fev/ 

 areas in Mercer county, irregular areas all over Middlesex county, 

 scattering points in the eastern part of Monniouth county, small 

 patches in Ocean and Burliugton counties, Pensauken and vicinity in 

 Camden county, scattering sections at the southwestern part of Glou- 

 cester and Salem counties, irregular areas throughout Atlantic and 

 Cumberland counties, and all the wooded sections on the Cape ilay 

 Peninsula. There is, therefore, no county entirely free from the in- 

 sects; but they do not approach the Delaware river closely except in 

 Camden county, and, in a general way. may be said to be most abun- 

 dant in the eastern half of the State. 



The insects will appear during the last days of May, 1911, and will 

 continue throughout June; disappearing by the end of the month. 

 The injury is done by the females in laying the eggs in twigs and 

 small branches, making slits that do not heal. These result in the 

 ultimate death beyond the point of injury of every punctured branch 

 less than one-half an inch in diameter, and, where there are many 



