﻿:i 
  Dendroctonus 
  terebrans 
  Oliv., 
  dorsum 
  of 
  head 
  and 
  pro- 
  

   thorax. 
  (Enlarged) 
  

  

  :3 
  Hylurgops 
  glabratus 
  Zett, 
  cephalic 
  aspect 
  of 
  mesosternum 
  ; 
  

   pro., 
  protuberance 
  of 
  mesosternum. 
  (Enlarged) 
  

  

  176 
  

  

  