﻿Plate 
  I. 
  

  

  Diplograytiis? 
  imsiis 
  His. 
  

  

  Fig. 
  1. 
  A 
  comiilete 
  specimen 
  from 
  the 
  Trinucleus-shale 
  of 
  Dalecarlia, 
  

  

  enlarged 
  3 
  times. 
  

   2 
  — 
  3. 
  Hisinger's 
  type-specimen 
  in 
  natural 
  size 
  and 
  magnified 
  3 
  times. 
  

  

  From 
  near 
  the 
  bridge 
  of 
  Dragga 
  in 
  the 
  parish 
  of 
  Eättvili, 
  

  

  Dalecarlia. 
  

   4—5. 
  Another 
  specimen 
  on 
  the 
  same 
  hand-specimen 
  as 
  the 
  former, 
  

  

  natural 
  size 
  and 
  3 
  times 
  enlarged. 
  

  

  6. 
  A 
  third 
  specimen, 
  magnified 
  3 
  times, 
  showing 
  the 
  position 
  of 
  

   the 
  bent 
  virgula. 
  

  

  7. 
  A 
  specimen, 
  which, 
  through 
  compressiou, 
  has 
  acquired 
  the 
  

   appearance 
  of 
  a 
  Climacograptus. 
  

  

  8. 
  The 
  base 
  of 
  a 
  specimen 
  enlarged. 
  

  

  9. 
  A 
  specimen 
  from 
  Ostrogothia, 
  partially 
  preserved 
  in 
  relief 
  

   and 
  showing 
  the 
  interiör 
  walls 
  of 
  the 
  hydrothecfe, 
  magnified 
  

   3 
  times. 
  

  

  10. 
  The 
  base 
  of 
  a 
  specimen. 
  five 
  times 
  enlarged. 
  

  

  11. 
  Fragment 
  of 
  a 
  specimen 
  from 
  the 
  Trinucleiis-shale 
  of 
  Bestorp, 
  

   Vestrogothia, 
  in 
  demirelief 
  and 
  showing 
  the 
  interiör 
  walls 
  of 
  

   the 
  hydrothecffi, 
  3 
  times 
  enlarged. 
  

  

  Climacograptus 
  scalaris 
  L. 
  

  

  12. 
  A 
  complete 
  specimen 
  from 
  Mösseberg, 
  Vestrogothia, 
  magnified 
  

   3 
  times. 
  

  

  13. 
  The 
  type 
  specimen 
  from 
  Hisingek's 
  coUection, 
  natural 
  size. 
  

  

  14. 
  The 
  same, 
  enlarged 
  3 
  times. 
  

  

  Cephalograptus 
  folmm, 
  His. 
  

  

  1.5—17. 
  The 
  type 
  specimens, 
  after 
  which 
  Hisinger's 
  figure 
  is 
  con- 
  

  

  structed, 
  natural 
  size. 
  

   18 
  — 
  10. 
  Specimens 
  from 
  Scania, 
  from 
  the 
  zone 
  of 
  Monograptvs 
  lepto- 
  

  

  tJieca 
  Lapw., 
  enlarged 
  3 
  times. 
  

  

  