﻿Calmonia 
  signifer 
  Clarke 
  

  

  (See 
  plate 
  8) 
  

  

  Fig. 
  i 
  A 
  large 
  entire 
  individual 
  in 
  which 
  all 
  the 
  essential 
  char- 
  

   acters 
  are 
  well 
  displayed. 
  Attention 
  may 
  be 
  directed 
  to 
  

   the 
  shoi?t 
  head, 
  obscurely 
  lobate 
  glabella, 
  small 
  anterior 
  

   eyes, 
  angled 
  extremities 
  of 
  the 
  segments 
  becoming 
  

   sharper 
  backward, 
  the 
  six 
  pairs 
  of 
  pygidiae 
  lappets 
  and 
  

   the 
  relatively 
  short 
  caudal 
  spine 
  

  

  2 
  A 
  smaller 
  entire 
  individual 
  with 
  exsert 
  genal 
  spines 
  and 
  

  

  a 
  longer 
  caudal 
  spine. 
  The 
  thoracic 
  segments 
  are 
  only 
  

   ten 
  and 
  one 
  seems 
  to 
  be 
  buried 
  at 
  the 
  junction 
  with 
  the 
  

   pygidium 
  

  

  3 
  Head 
  and 
  thorax 
  

  

  4 
  An 
  entire 
  but 
  somewhat 
  distorted 
  specimen 
  

  

  Calmonia 
  signifer 
  var. 
  micrischia 
  Clarke 
  

  

  Fig. 
  5 
  A 
  small 
  entire 
  individual 
  

   6 
  A 
  larger 
  entire 
  example 
  

  

  Locality: 
  Ponta 
  Grossa, 
  Sao 
  Paulo, 
  Brazil 
  

  

  158 
  

  

  