﻿450 
  REV. 
  G. 
  E. 
  WHIDBORNE 
  DESCRIPTION 
  OF 
  THE 
  [Aug. 
  1 
  89 
  7, 
  

  

  other 
  much 
  blurred, 
  appear 
  to 
  agree 
  with 
  figures 
  of 
  a 
  right 
  (?) 
  and 
  

   left 
  valve 
  of 
  Freeh's 
  species. 
  The 
  wings 
  look 
  smaller, 
  but 
  are 
  

   probably 
  very 
  defective. 
  The 
  surface 
  of 
  one 
  specimen 
  seems 
  

   covered 
  with 
  very 
  numerous 
  minute 
  nexuous 
  and 
  irregular 
  rays 
  

   (of 
  Freeh, 
  fig. 
  2) 
  ; 
  in 
  the 
  other 
  the 
  ribs 
  are 
  fewer 
  and 
  stronger, 
  and 
  

   the 
  transverse 
  lines 
  scalloped 
  (cf. 
  Freeh, 
  fig. 
  6). 
  In 
  both 
  I 
  think 
  

   I 
  can 
  detect, 
  though 
  very 
  doubtfully, 
  the 
  peculiar 
  characteristic 
  

   shape 
  of 
  Limoptera. 
  The 
  ornament 
  of 
  the 
  first 
  of 
  the 
  two 
  speci- 
  

   mens 
  is 
  very 
  like 
  that 
  of 
  a 
  Daleiden 
  specimen 
  of 
  the 
  left 
  valve 
  of 
  

   Pt. 
  lineata 
  1 
  lent 
  me 
  by 
  Mr. 
  Upfield 
  Green. 
  In 
  that 
  species, 
  

   however, 
  the 
  right 
  valve 
  is 
  said 
  to 
  be 
  smaller. 
  L. 
  semiradiata 
  is 
  

   said 
  to 
  be 
  frequent 
  in 
  the 
  Lower 
  Coblentzian 
  of 
  St. 
  Johann 
  (Eifel). 
  

  

  Spirifera 
  sp. 
  (PI. 
  XXXI. 
  fig. 
  10.) 
  

  

  Locality. 
  Treborough. 
  

  

  Size. 
  17 
  mm. 
  wide. 
  Area 
  about 
  5 
  mm. 
  wide. 
  

  

  A 
  single 
  fossil 
  shows 
  a 
  wide, 
  slightly 
  concave 
  area, 
  with 
  a 
  

   triangular 
  fissure, 
  bounded 
  apparently 
  by 
  strong 
  dental 
  plates. 
  Its 
  

   valves 
  are 
  almost 
  destroyed 
  by 
  compression, 
  but 
  they 
  evidently 
  had 
  

   strong 
  ribs, 
  of 
  which 
  there 
  are 
  indications 
  of 
  at 
  least 
  3 
  or 
  4 
  on 
  each 
  

   wing 
  and 
  possibly 
  of 
  3 
  or 
  4 
  on 
  the 
  fold. 
  

  

  U> 
  From 
  the 
  appearance 
  of 
  its 
  area 
  it 
  might 
  very 
  possibly 
  be 
  a 
  

   specimen 
  of 
  Sp. 
  subcusjndata, 
  Schnur, 
  2 
  but 
  it 
  is 
  far 
  too 
  poor 
  to 
  be 
  

   identified. 
  

  

  Spirieera 
  sp. 
  (PL 
  XXXIY. 
  fig. 
  3.) 
  

  

  Locality. 
  Oakhampton 
  Quarry. 
  

  

  The 
  ventral 
  valve 
  of 
  a 
  spirifer 
  occurs 
  lying 
  on 
  an 
  elongate 
  

   decayed 
  organism, 
  which 
  is 
  either 
  the 
  continuation 
  of 
  its 
  hinge-line 
  

   or 
  more 
  probably 
  one 
  of 
  the 
  enigmatical 
  aciculate 
  bodies 
  that 
  are 
  so 
  

   common 
  at 
  Treborough. 
  Its 
  umbo 
  is 
  low 
  and 
  incurved 
  ; 
  its 
  shape 
  

   transverse, 
  subfusiform, 
  and 
  probably 
  acutely 
  alate 
  ; 
  its 
  sinus 
  rather 
  

   broad, 
  with 
  an 
  indication 
  of 
  a 
  minute 
  median 
  rib. 
  On 
  each 
  side 
  

   are 
  about 
  6 
  strong, 
  sharpish, 
  distant 
  ribs, 
  which 
  seem 
  separated 
  by 
  

   broad 
  concave 
  furrows. 
  The 
  surface 
  seems 
  crossed 
  by 
  very 
  distant, 
  

   regular, 
  transverse 
  lines. 
  Thus 
  it 
  is 
  not 
  unlike 
  Spiriferina 
  cristata, 
  

   var. 
  octoplicata, 
  Sowerby, 
  but 
  the 
  specimen 
  is 
  much 
  too 
  indistinct 
  

   and 
  obscured 
  by 
  clothing 
  matrix 
  to 
  be 
  identified. 
  As 
  it 
  lies, 
  it 
  

   presents 
  a 
  striking 
  likeness 
  to 
  a 
  figure 
  by 
  Kayser 
  3 
  of 
  a 
  broken 
  

   specimen 
  of 
  Spirifera 
  Hercynice^ 
  Giebel. 
  4 
  

  

  1 
  1834-40. 
  Goldfuss, 
  ' 
  Petref. 
  Germ.' 
  vol. 
  ii. 
  p. 
  135 
  & 
  pi. 
  cxix. 
  fig. 
  6. 
  

  

  2 
  1852. 
  Schnur, 
  Palaeontographica, 
  vol. 
  iii. 
  p. 
  202, 
  pi. 
  xxxiii. 
  fig. 
  3 
  a-fk 
  

   pi. 
  xxxiv. 
  fig. 
  1 
  a-g. 
  

  

  3 
  1878. 
  Kayser, 
  Abh. 
  geol. 
  Specialk. 
  Preuss. 
  vol. 
  ii. 
  pt. 
  iv. 
  p. 
  168 
  & 
  pi. 
  xxiii. 
  

   fig. 
  11. 
  

  

  4 
  1858. 
  Giebel, 
  ' 
  Sil. 
  Faun. 
  Unterharz,' 
  p. 
  30 
  & 
  pi. 
  iv. 
  fig. 
  14. 
  

  

  