PLaTeE |. 
Bul. 71, Bureau of Entomology, U. S. Dept. of Agriculture, 
a, Fresh wounds in maple 
showing that the pune 
from old trees; g, h 
U 
WORK OF THE PERIODICAL CICADA. 
+ b, d, e, and f, Condition four months later in maple; ¢, Wounds healed in one season; ¢, Three months’ old scars in wild cherry, 
Apple; j, k, l, Pear 
‘tures may extend both toward the top and base of the twig; g, h, 7, j, &, J, Cicada sears seventeen years old on terminal branches 
(After Hopkins. ) 
