U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY. 
BULLETIN No. 8. 
CSEH GOEN Db!) oie hOcN.) 
a ELE 
PERIODICAL CICADA. 
AN ACCOUNT OF CICADA SEPTENDECIM AND ITS TREDECIM RACE, WITH 
A CHRONOLOGY OF ALL BROODS KNOWN. 
BY 
PEARL ES V. RLLEY, Ph. WD: 
> > ae 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE, 
1885. 
166 
