﻿bihAng 
  till 
  k. 
  sv. 
  vet.-akad. 
  handl. 
  band 
  6. 
  N:0 
  13. 
  9 
  

  

  lohifer 
  M. 
  Coy. 
  Iu 
  addition 
  to 
  this 
  there 
  is 
  found 
  in 
  Hisinger's 
  

   collection 
  under 
  tlie 
  same 
  name 
  another 
  form, 
  preserved 
  

   in 
  a 
  dark 
  sliale 
  from 
  Fågelsång; 
  but 
  this 
  is 
  not 
  figured, 
  

   and 
  is, 
  according 
  to 
  onr 
  present 
  conception 
  of 
  a 
  species 
  a 
  

   separate 
  form. 
  

  

  Hisinger's 
  description 
  is 
  as 
  follows: 
  

  

  »Prionotus 
  scalaris 
  linearis, 
  rectus, 
  unciam 
  longus, 
  vix 
  

   lineam 
  latus, 
  compressus, 
  racliide 
  centrali, 
  capillari, 
  utrinque 
  

   dissepimentis 
  transversis, 
  alternis. 
  — 
  Icon. 
  Petrif. 
  suec. 
  Suppl., 
  

   Tab. 
  XXXV, 
  fig. 
  4 
  a 
  magn. 
  nat., 
  b. 
  magn. 
  aucta. 
  — 
  Grap- 
  

   tolithus 
  scalaris 
  L. 
  — 
  Loc. 
  In 
  strato 
  superiori 
  schisti 
  argillacei 
  

   Vestrogothiae, 
  et 
  in 
  schisto 
  argillaceo 
  Scaniae 
  ad 
  Fågelsång 
  etc.» 
  

  

  I 
  here 
  append 
  a 
  description 
  of 
  tlie 
  species 
  according 
  to 
  

   the 
  terminology 
  now 
  in 
  use. 
  

  

  Olimacograptus 
  scalaris 
  L. 
  

  

  Plate 
  I, 
  fig. 
  12, 
  13, 
  14. 
  

  

  Graptolithus 
  scalaris 
  Linné. 
  Syst. 
  Nat., 
  Ed. 
  XII, 
  p. 
  174, 
  1768. 
  — 
  

   Orthoceratites 
  tennis 
  Wahlenb., 
  Petriflcata 
  Telluris 
  Svecauae, 
  in 
  Nova 
  

   Acta 
  Reg. 
  Soc. 
  Scientiar. 
  Upsaliae, 
  Vol. 
  VIII. 
  1821, 
  p. 
  93. 
  — 
  PrionoUis 
  

   scalaris 
  His. 
  1. 
  c. 
  — 
  Climacogr. 
  normalis 
  Lapw., 
  On 
  the 
  Graptolites 
  of 
  

   County 
  Down. 
  Proceedings 
  of 
  Belfast 
  Naturalists' 
  Field 
  Club. 
  Appendix 
  

   1876-77, 
  pl. 
  VI, 
  fig. 
  31. 
  

  

  The 
  hydrosoma 
  is 
  2 
  — 
  3 
  ctm. 
  long, 
  2 
  — 
  2,5 
  mm. 
  broad, 
  

   with 
  ventral 
  margins 
  converging 
  downwards; 
  the 
  base 
  is 
  

   sharply 
  rounded, 
  drawn 
  out 
  in 
  a 
  more 
  or 
  less 
  prolonged 
  

   point; 
  the 
  virgula 
  is 
  distally 
  elongated. 
  The 
  hydrothecae 
  

   are 
  found 
  to 
  a 
  number 
  of 
  8 
  — 
  9 
  on 
  10 
  mm., 
  and 
  are 
  rectangular 
  

   in 
  shape. 
  The 
  exteriör 
  margin 
  is 
  horizontal 
  above 
  the 
  aper- 
  

   ture 
  of 
  the 
  nearest 
  hydrotheca. 
  This 
  margin 
  forms 
  an 
  acute 
  

   angle 
  and 
  rises 
  vertically 
  to 
  the 
  apertural 
  börder, 
  which 
  is 
  

   rectangular 
  to 
  this 
  and 
  somewhat 
  concave. 
  

  

  HisiNGEKS 
  type 
  specimens 
  are 
  conserved 
  in 
  a 
  lightgray 
  

   shale 
  from 
  Mösseberg 
  in 
  Vestrogothia, 
  hardened 
  by 
  contact 
  

   with 
  diabase, 
  and 
  often 
  covered 
  by 
  a 
  film 
  of 
  a 
  rusty 
  colour. 
  

   On 
  the 
  slabs 
  there 
  are 
  to 
  be 
  seen 
  Monograptus 
  lohifer 
  and 
  

   a 
  small 
  Diplograj^tus. 
  This 
  is 
  probably 
  the 
  same 
  shale, 
  to 
  

   which 
  Bromell 
  and 
  Wahlenberg 
  allude. 
  

  

  The 
  same 
  species 
  is 
  moreover 
  to 
  be 
  found 
  at 
  Kongs- 
  

   lena 
  in 
  Westrogothia, 
  in 
  Scania 
  at 
  Röstånga, 
  Kiviks 
  Esperöd, 
  

  

  