﻿U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS, 
  VOL. 
  XX 
  PL. 
  IX 
  

  

  Male 
  abdominal 
  Appendages 
  of 
  Podisma 
  and 
  Paratylotropidia; 
  

   Paratylotropidia 
  brunneri. 
  

  

  For 
  explanation 
  of 
  plate 
  see 
  page 
  409. 
  

  

  