﻿Memoirs 
  Boston 
  See. 
  Nat. 
  Hist,, 
  Vol. 
  8. 
  No. 
  3. 
  

  

  Plate 
  28. 
  

  

  R. 
  Deckert. 
  ad 
  nat. 
  del. 
  

  

  Muhlenberg's 
  Turtle. 
  

  

  