﻿Rossmaessler, 
  Iconographie. 
  N. 
  F. 
  XVIII. 
  

  

  Taf. 
  4gg. 
  

  

  2öi2 
  

  

  2643 
  

  

  2644 
  

  

  26Jt2 
  

  

  Werner 
  uWinter,FranWrt'''M 
  

  

  264.2. 
  Unio 
  bitortis 
  Mtrs. 
  — 
  2643. 
  44. 
  U. 
  biformis 
  Mtrs. 
  

  

  