﻿10 
  S. 
  A. 
  TULLBERG, 
  GRAPTOLITES 
  DESCRIBED 
  BY 
  HISINGER. 
  

  

  Bollerup, 
  and 
  in 
  detached 
  blocks 
  at 
  Bybjer, 
  close 
  by 
  O. 
  Herre- 
  

   stad 
  and 
  sorae 
  other 
  localities. 
  It 
  occurs 
  only 
  in 
  the 
  zones 
  

   of 
  M. 
  gregarius 
  and 
  M. 
  lobifer. 
  — 
  The 
  figures 
  13 
  and 
  14 
  on 
  

   my 
  first 
  plate 
  represent 
  Hisinger's 
  type 
  specimen 
  — 
  natural 
  

   size 
  and 
  raagnified; 
  fig. 
  12 
  is 
  a 
  drawing 
  of 
  another 
  specimen 
  

   from 
  tlie 
  same 
  locality, 
  Mösseberg. 
  

  

  No. 
  2. 
  The 
  next 
  species 
  described 
  by 
  Hisinger 
  is 
  Prio- 
  

   notus 
  jjristis. 
  The 
  original 
  is 
  preserved 
  in 
  a 
  darkbrown 
  shale 
  

   from 
  tlie 
  Trinucleus-zone 
  at 
  Draggå-bridge 
  in 
  Dalecarlia. 
  Be- 
  

   sides 
  the 
  specimen 
  which 
  Hisinger 
  has 
  fignred, 
  other 
  forms, 
  

   represented 
  on 
  Plate 
  I 
  by 
  the 
  figures 
  4 
  and 
  5, 
  are 
  seen 
  on 
  

   the 
  same 
  slab; 
  the 
  figures 
  2 
  and 
  3 
  are 
  new 
  delineatious 
  of 
  

   Hisinger's 
  own 
  original 
  specimen. 
  Hisinger's 
  description 
  is 
  

   as 
  follows 
  : 
  

  

  »Prionotus 
  Pristis 
  linearis, 
  rectus, 
  vix 
  lineam 
  latus, 
  com- 
  

   pressus, 
  rachide 
  centrali, 
  capillari, 
  utrinque 
  dentibus 
  latis, 
  

   acatis. 
  — 
  Icon. 
  Petrif. 
  Suec. 
  Suppl. 
  Tab. 
  XXXV, 
  fig. 
  5. 
  — 
  

   Loc. 
  In 
  Calce 
  transitionis 
  fusca 
  ad 
  Draggån 
  in 
  paroecia 
  Rätt- 
  

   vik, 
  Dalecarlise. 
  A 
  Dom. 
  J. 
  G. 
  Clason 
  lectus». 
  

  

  This 
  species 
  may 
  provisionally 
  be 
  placed 
  in 
  the 
  genus 
  

   Diplograptus. 
  

  

  Diplograptus 
  ? 
  pristis. 
  His. 
  

  

  Plate 
  I, 
  fig. 
  1—11. 
  

  

  Priotiottis 
  pristis 
  His. 
  1. 
  c. 
  — 
  Biplogvaptus 
  pristis 
  TÖENQUIST. 
  Om 
  

   några 
  graptolitarter 
  från 
  Dalarne, 
  Geol. 
  Fören. 
  i 
  Stockholm 
  Förh. 
  1881. 
  

   N:o 
  66, 
  Bd. 
  V, 
  N:o 
  10, 
  p. 
  443, 
  Pl. 
  17, 
  fig. 
  8 
  a— 
  g. 
  

  

  The 
  hydrosoma 
  is 
  4 
  — 
  5 
  ctm. 
  long, 
  2.5 
  mm. 
  broad; 
  gro- 
  

   wing 
  downwards 
  smaller, 
  with 
  rounded 
  base, 
  which 
  is 
  drawn 
  

   out 
  in 
  a 
  sharp 
  point 
  or 
  »radicle». 
  The 
  virgula 
  is 
  often 
  irre- 
  

   gularly 
  bent, 
  distally 
  elongated; 
  no 
  line, 
  indicating 
  a 
  median 
  

   septum 
  is 
  to 
  be 
  seen 
  on 
  the 
  hydrosoma; 
  the 
  median 
  plane 
  

   between 
  the 
  hydrothecae 
  is 
  smooth 
  and 
  even. 
  On 
  a 
  length 
  of 
  

   10 
  mm. 
  there 
  are 
  9 
  — 
  10 
  hydrothecae, 
  diverging 
  from 
  the 
  axis 
  

   at 
  22°; 
  they 
  are 
  tvibes 
  of 
  rectangular 
  shape, 
  assuming 
  diiferent 
  

   appearances 
  in 
  relation 
  to 
  the 
  difFerent 
  manner 
  in 
  which 
  the 
  

   specimeus 
  have 
  been 
  preserved; 
  only 
  the 
  two 
  primary 
  

   hydrothecae 
  have 
  the 
  apertural 
  edges 
  elongated 
  in 
  a 
  sharp 
  

   spine. 
  The 
  section 
  of 
  the 
  hydrosoma 
  is 
  rectangular. 
  On 
  

  

  