﻿^°1- 
  53'] 
  FOSSILS 
  FROM 
  THE 
  MORTE 
  SLATES, 
  ETC. 
  457 
  

  

  (or 
  perhaps 
  more) 
  septal 
  fossulae. 
  Secondary 
  septa 
  rudimentary, 
  

   hardly 
  indenting 
  the 
  interseptal 
  spaces 
  in 
  the 
  cast. 
  Reproduction 
  

   from 
  the 
  outside 
  margin 
  of 
  the 
  cup. 
  Base 
  dilate. 
  

  

  Remarks. 
  This 
  species 
  is 
  represented 
  by 
  casts 
  and 
  natural 
  

   sections. 
  I 
  do 
  not 
  think 
  that 
  it 
  is 
  identical 
  with 
  either 
  of 
  the 
  

   forms 
  described 
  by 
  Phillips. 
  

  

  Eridophyllum 
  sp. 
  

  

  Locality. 
  Treborough. 
  

  

  Size. 
  About 
  80 
  mm. 
  long. 
  

  

  Description. 
  Coral 
  composite, 
  free, 
  growing 
  from 
  a 
  single 
  original 
  

   in 
  a 
  series 
  of 
  calicularly-produced 
  cups, 
  which 
  swell 
  out 
  into 
  nodes 
  

   at 
  rapid 
  intervals. 
  Epitheca 
  apparently 
  thick. 
  Septa 
  few, 
  strong, 
  

   and 
  apparently 
  short, 
  only 
  reaching 
  part 
  way 
  to 
  the 
  centre. 
  Dis- 
  

   sepiments 
  few 
  and 
  coarse. 
  

  

  This 
  fossil, 
  which 
  was 
  found 
  by 
  Mr. 
  R. 
  S. 
  Hemes, 
  Sec.G.S., 
  has 
  

   perplexed 
  me 
  much, 
  as 
  its 
  details 
  of 
  structure 
  are 
  only 
  partially 
  ex- 
  

   posed 
  in 
  the 
  only 
  specimen. 
  It 
  appears 
  to 
  me 
  that 
  in 
  all 
  probability 
  

   it 
  belongs 
  to 
  the 
  Devonian 
  (America) 
  and 
  Silurian 
  (Gothland) 
  genus 
  

   Eridopliyllum 
  of 
  Milne-Edwards 
  and 
  Haime, 
  though 
  whether 
  its 
  

   swellings 
  possess 
  the 
  root-like 
  character 
  of 
  those 
  of 
  that 
  genus 
  is 
  

   not 
  yet 
  clear. 
  

  

  EXPLANATION 
  OF 
  PLATES 
  XXXI.-XXXV. 
  

  

  Plate 
  XXXI. 
  

  

  Treborough 
  Slate-quarry. 
  

  

  Figs. 
  1-3. 
  Balmanites 
  sp. 
  1. 
  Head, 
  nat. 
  size. 
  2. 
  Cast 
  of 
  the 
  reverse 
  of 
  2 
  a. 
  

  

  3. 
  Pygidium, 
  uat. 
  size. 
  

   Fig. 
  4. 
  Homalonntus 
  sp. 
  

  

  5. 
  Cypricardinia 
  ? 
  sp. 
  X 
  2. 
  

  

  6. 
  Gosseletia 
  ? 
  Kayseri, 
  Freeh 
  ? 
  6 
  a. 
  Portion 
  X 
  3 
  showing 
  the 
  oblique 
  

  

  lineation. 
  

   Figs. 
  7-9. 
  Grammysia 
  ? 
  sp. 
  

  

  Fig. 
  10. 
  Spirifera 
  sp. 
  A 
  compressed 
  specimen 
  showing 
  a 
  wide 
  area. 
  

   Figs. 
  11-13. 
  Strophomena 
  {Stropheodontal) 
  explanata 
  (Sowerby) 
  ? 
  12. 
  A 
  small 
  

  

  specimen 
  which 
  has 
  apparently 
  escaped 
  distortion. 
  

  

  Plate 
  XXXII. 
  

  

  Treborough 
  Slate-quarry. 
  

  

  Figs. 
  1-3. 
  Strophomena 
  (Stropheodonta 
  ?) 
  explanata 
  (Sowerby) 
  ? 
  Variously 
  

   distorted. 
  

   4 
  & 
  5. 
  Streptorkynchits 
  persarmentosus 
  (M'Coy), 
  X 
  2. 
  4. 
  From 
  Mr. 
  Up- 
  

   field 
  Green's 
  Collection. 
  

  

  Plate 
  XXXIII. 
  

  

  Treborough 
  Slate-quarry. 
  

  

  Figs. 
  1 
  & 
  2. 
  Chonetes 
  jrfebeia, 
  Schnur, 
  x2. 
  1. 
  Showing 
  hinge-spines. 
  

  

  3-5. 
  Chonetes 
  sarclnulat 
  a, 
  Schlotheim, 
  x2. 
  4&5. 
  Showing 
  hinge-spines. 
  

  

  5. 
  With 
  coarser 
  ribs 
  than 
  usual. 
  

   6, 
  6«, 
  7. 
  Petraia 
  sp. 
  (1, 
  6 
  a. 
  Opposite 
  views 
  of 
  a 
  flattened 
  cast. 
  7. 
  Cast 
  

   seen 
  from 
  below 
  ; 
  from 
  Mr. 
  Herries's 
  Collection. 
  

   Fig. 
  8. 
  Cladochonus 
  sp. 
  

  

  