32 
THE PERIODICAL CICADA. 
The confirmations of the occurrence of this brood in New York in 
later years are reported in Bulletin No. 8, Division of Entomology. 
The localities in Pennsylvania are based on later Divisional records. 
The distribution, by States and counties, is as follows: 
New York. — Cayuga Lake, Livingston, Madison, Monroe, Onondaga. Ontario, Wyo- 
ming, Yates. 
Pennsylvania. — Allegheny, Washington. 
Brood XX.— Sejptendecim— 1900. (Fig. 6.) 
This is Fitch's second brood, which he described as occurring in 
western New York, western Pennsylvania, and eastern Ohio, and is 
Map showing distribution of Brood XX, 1900. 
Brood XIV of Walsh-Riley. Dr. GL B. Smith also gives valuable data 
relative to its appearance and distribution. 
It is one of the smaller broods and seems not to have attracted much 
attention on its last appearance in 1883. It covers a rather compact 
territory, in the main as described by Pitch, with the addition of the 
northern portion of West Virginia. 
The widely separated swarm occurring on Marthas Vineyard, for- 
merly to Brood' XXI (Brood 8 of Fitch), undoubtedly belongs to this 
brood, and has been well recorded since the time of Harris. 
The swarms in western New York have not been given accurate 
location, but they are supposed to occur in or near Chautauqua County; 
in fact, a report of the appearance of the Cicada in this county in 1883 
was given in the New York Herald, but could not be verified. 
