﻿534 
  

  

  PROF. 
  F. 
  SCHMIDT 
  ON 
  THE 
  SILURIAN 
  STRATA 
  

  

  Subgenus 
  Niesz/cowskia, 
  uiihi. 
  

   12 
  segments 
  to 
  the 
  body, 
  pleurae 
  

   with 
  a 
  row 
  of 
  impressions. 
  Py- 
  

   gidium 
  4-lobed. 
  Type 
  Spharex- 
  

   ochus 
  cephaloceros, 
  Nieszk.,C7^>. 
  

   Vulcanus, 
  Bill. 
  

  

  42. 
  Ch. 
  tumidus, 
  Ang 
  

  

  Subgenus 
  Pseudosphcerexochas, 
  

   mihi. 
  

   12 
  segm. 
  to 
  the 
  body 
  ; 
  pleura 
  

   nearly 
  smooth, 
  without 
  impres- 
  

   sions. 
  Pygidium 
  octolobate. 
  Type 
  

   Sphcerexochus 
  hemicranium, 
  Kut.: 
  

   of 
  English 
  Trilobites, 
  perhaps 
  

   Ch. 
  octolobatus, 
  M'Ooy, 
  belongs 
  

   to 
  this 
  subgenus. 
  

  

  38. 
  Ch. 
  hemicranium, 
  Kut. 
  

  

  39. 
  Ch. 
  Pahnschi, 
  mihi 
  

  

  40. 
  Ch. 
  Ecemeri, 
  mihi 
  

  

  41. 
  Ch. 
  conformis, 
  Ang 
  

  

  B. 
  

   2 
  3 
  

  

  43. 
  Ch. 
  cephaloceros, 
  NieszJc. 
  

  

  44. 
  Ch. 
  variolaris, 
  Linnarss. 
  

  

  Genus 
  Spilerexociius, 
  Beyr. 
  

   45. 
  S. 
  angustif 
  rons, 
  Ang 
  

  

  Genus 
  Amphiox, 
  Pand. 
  

   46. 
  A. 
  Fischeri 
  (Eichw.) 
  ... 
  

  

  Genus 
  Diaphaxometopus, 
  mihi 
  

   (near 
  Amphion). 
  

  

  47. 
  B. 
  Volborthi, 
  mihi 
  

  

  Cheirurida3. 
  

  

  III. 
  ENCRINUBID.E. 
  

  

  Genus 
  Cybele, 
  Lov. 
  

  

  48. 
  C. 
  bellatula, 
  Balm., 
  (syn 
  

   Zethus 
  verrucosus, 
  Pand. 
  

   Volb.) 
  

  

  49. 
  C. 
  revaliensis, 
  mihi 
  

  

  50. 
  C. 
  rex, 
  NieszJc 
  

  

  51. 
  C. 
  Grewingki, 
  mihi 
  

  

  52. 
  C. 
  coronata, 
  mihi 
  

  

  53. 
  C. 
  Worthi, 
  Eichw. 
  (Zethus 
  

   bellatulus, 
  Volb.) 
  

  

  0. 
  

  

  D. 
  

  

  1 
  2 
  3 
  

  

  K) 
  

  

  E. 
  

  

  G. 
  

  

  K. 
  

  

  Abroad. 
  

  

  Erratics 
  in 
  N.Germany. 
  

   Sweden 
  (Dalarne). 
  

  

  Sweden 
  ( 
  Orthoceras- 
  

   limestone). 
  

  

  Sweden 
  (Chasmops- 
  

   limestone). 
  Erratics 
  

   in 
  Prussia. 
  

  

  Sweden 
  (Dalarne),Eng- 
  

   land. 
  

  

  Sweden 
  Orthoceras- 
  

   limestone. 
  

  

  Sweden, 
  Norway 
  (Or- 
  

  

  ^oecras-limestone). 
  

   Erratics 
  in 
  N.Germany, 
  

  

  