﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  XX 
  PL. 
  XV 
  

  

  r- 
  ■ 
  irrf 
  

  

  

  Male 
  abdominal 
  Appendages 
  of 
  Melanoplus. 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  410. 
  

  

  