﻿302 
  PKOCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  Fig. 
  3. 
  Modiolopsis 
  obliquus, 
  spec. 
  nov. 
  : 
  a, 
  interior 
  cast 
  of 
  left 
  valve 
  ; 
  b, 
  re- 
  

   stored 
  figure 
  ; 
  c, 
  right 
  valve 
  of 
  young 
  specimen. 
  

  

  4. 
  Modiolopsis 
  liratus, 
  spec. 
  nov. 
  : 
  left 
  valve, 
  interior 
  cast, 
  and 
  edge-view 
  

  

  of 
  the 
  same. 
  

  

  5. 
  Modiolopsis 
  lingualis, 
  spec. 
  nov. 
  : 
  right 
  valve, 
  interior 
  cast. 
  

  

  6. 
  Clidophorus 
  ? 
  amygdalus, 
  spec. 
  nov. 
  : 
  a, 
  interior 
  cast 
  of 
  right 
  valve 
  ; 
  

  

  b, 
  edge-view 
  ; 
  c, 
  restored 
  hinge 
  from 
  gutta-percha 
  cast. 
  

  

  7. 
  Lyrodesma 
  ccelata, 
  spec. 
  nov. 
  : 
  a, 
  interior 
  of 
  right 
  valve 
  ; 
  b, 
  hinge, 
  cast 
  

  

  in 
  gutta-percha 
  from 
  a. 
  

  

  8. 
  Area 
  ? 
  Naranjoana 
  ?, 
  De 
  Verneuil. 
  Right 
  and 
  left 
  valves, 
  interior 
  casts. 
  

  

  9. 
  Talcearca 
  secunda, 
  spec. 
  nov. 
  : 
  a, 
  interior 
  cast 
  of 
  left 
  valve 
  ; 
  b, 
  edge- 
  

  

  view 
  ; 
  c, 
  hinge, 
  cast 
  in 
  gutta-percha 
  from 
  a. 
  

  

  10. 
  Orthonota 
  Grammysioides, 
  spec. 
  nov. 
  : 
  «, 
  right 
  valve; 
  b, 
  edge- 
  view. 
  

  

  11, 
  Solen?, 
  sp. 
  Imperfect 
  external 
  impression 
  of 
  right 
  valve. 
  

  

  Plate 
  XVII. 
  

  

  Fig. 
  1. 
  Lingula 
  Lesiieuri, 
  Rouault. 
  

  

  2, 
  3. 
  L. 
  Hawkei, 
  Rouault. 
  Both 
  valves, 
  and 
  edge-view 
  of 
  the 
  same. 
  

   4, 
  5. 
  L. 
  Bouavlti, 
  spec. 
  nor. 
  Upper 
  and 
  lower 
  valves 
  : 
  4«, 
  edge-view 
  of 
  

   united 
  valves. 
  

  

  6. 
  L. 
  Brimonti, 
  Rouault. 
  Smaller 
  valve. 
  

  

  7. 
  Orthis 
  rednx, 
  Barrande 
  : 
  a, 
  b, 
  interior 
  casts 
  of 
  dorsal 
  valve 
  ; 
  c, 
  interior 
  

  

  casts 
  of 
  ventral 
  valve. 
  

   7d. 
  Variety 
  with 
  deeper 
  furrows, 
  dorsal 
  valve. 
  

  

  8. 
  Orthis 
  pulvinata, 
  spec. 
  nov. 
  Interior 
  dorsalValve. 
  

  

  9. 
  Porambonites, 
  sp. 
  

  

  10, 
  11. 
  Spirifer 
  antiqtcissimus, 
  spec. 
  nov. 
  Interior 
  casts 
  of 
  dorsal 
  valve: 
  

   10 
  a, 
  edge-view 
  of 
  ditto. 
  

  

  12. 
  Interior 
  cast 
  of 
  ventral 
  valve 
  of 
  ditto. 
  

  

  13. 
  S. 
  Davidis, 
  Rouault 
  ? 
  Interior 
  of 
  dorsal 
  valve. 
  

  

  14. 
  Rhynchonella, 
  sp. 
  1 
  ^ 
  ., 
  , 
  ^ 
  • 
  *■ 
  

  

  -j 
  x 
  J 
  _ 
  ' 
  r 
  v 
  Possibly 
  Devonian 
  forms. 
  

  

  16, 
  17. 
  Leptcena 
  Vicaryi, 
  spec. 
  nov. 
  : 
  16 
  a, 
  b, 
  two 
  views, 
  internal 
  cast 
  of 
  the 
  

   deep 
  ventral 
  valve 
  ; 
  17, 
  cast 
  of 
  external 
  surface 
  of 
  the 
  concave 
  smaller 
  

   or 
  dorsal 
  valve. 
  

  

  