﻿Plate 
  23 
  

  

  SSW*"M* 
  

  

  tm 
  

  

  1 
  Same 
  as 
  figure 
  3, 
  plate 
  22 
  

  

  2 
  Same 
  as 
  figure 
  5, 
  plate 
  22 
  

  

  