eo DEPART MEN FOF “AGRICULTURE, 
BUREAU OF ENTOMOLOGY—BULLETIN No. 71. 
L. O. HOWARD, Entomologist and Chief of Bureau. 
THE 
PERIODICAL CICADA. 
BY 
GC. L. MARLATT, M.S&., 
Entomologist and Acting Chief in Absence of Chief. 
IssurEp JuLy 18, 1907. 
WASHINGTON 
GOVERNMENT PRINTING OFFICE. 
JOT. 
