2 THE PERIODICAL CICADA IN 1911, 



ous records for individual counties, but these are represented on the 

 naap by a single dot. Tliis is one of the best recorded broods, since its 

 almost exclusively eastern range brings it into the immediate vicinity of 

 the larger towns and more populated districts of the Atlantic seaboard. 

 It has been reported in Connecticut regularly every 17 years since 

 1724 and in New Jersey since 1775, and almost equally long records of 

 it in other States have been made. At its last appearance in 1894 it 

 was carefully studied, to determine distribution, for New Jersey by 



Fig. 2. — Map showing distribution of 17-year Brood II, 1911. 



Dr. John B. vSmith, for New York by Dr. J. A. Lintner, and for the 

 other States covered by its range by this bureau, with the aid of 

 State entomologists and local observers. Some of the southern 

 records obtained in 1894 are doubtful, and tliis applies especially to 

 locahties in North Carohna, because of the appearance the same year 

 of Brood XIX of the 13-year race, which, in North Carolina, ma}' 

 touch or overlap this 17-year brood. It is therefore very desirable 

 that all observers in South Carohna report occurrences this year of 

 the periodical cicada to clear up these doubtful records. 



The distribution, as listed below, is based upon all of the available 

 records : 



Connecticut. — Fairfield, Hartford, Litchfield, Middlesex, New Haven. 



District of Columbia. — Throughout. 



Indiana. — Dearborn, Posey (?). 



Maryland. — Anne Arundel, Calvert, Charles, Prince Georges, St. Marys. 



