﻿Fig. 
  2. 
  

  

  Fig. 
  2. 
  — 
  Living 
  Venus 
  campechiensis 
  from 
  Florida, 
  nat. 
  size. 
  

   Fig. 
  3. 
  

  

  Fig. 
  3. 
  — 
  Fossil 
  Venus 
  campechiensis 
  from 
  Sankaty 
  Head, 
  nat. 
  size. 
  

  

  