﻿Bui. 
  1 
  19, 
  Bureau 
  of 
  Entomology, 
  U. 
  S. 
  Dept. 
  of 
  Agriculture. 
  

  

  Plate 
  III. 
  

  

  o 
  

  

  2 
  

   o 
  

  

  cc 
  

   LLl 
  *-" 
  

  

  o 
  

  

  