﻿EEV. 
  W. 
  DOWNES 
  OTf 
  THE 
  BLACKDOWST 
  BEDS. 
  QV 
  

  

  Thetis 
  Sowerbyi 
  (Bom.). 
  J. 
  

  

  major. 
  1 
  Thus 
  distinguished 
  by 
  Sower 
  by 
  (Min. 
  Con.), 
  who, 
  however, 
  con- 
  

  

  minor. 
  J 
  siders 
  the 
  distinction 
  to 
  be 
  mainly 
  one 
  of 
  size. 
  

  

  Myacites 
  sp. 
  ? 
  J, 
  W, 
  CE, 
  D. 
  Bed 
  10. 
  

  

  plicatus 
  (Sow.). 
  

  

  ovalis 
  (Sow.). 
  B. 
  Fitton, 
  pi. 
  xvi. 
  fig. 
  5. 
  

  

  Gasteropoda. 
  

  

  Mtirex 
  calcar 
  (Sow.). 
  Common. 
  Beds 
  7-10. 
  

  

  x^yrula 
  depressa 
  (Sow.). 
  CE, 
  B, 
  W. 
  Fitton, 
  pi. 
  xviii. 
  fig 
  20. 
  

  

  sp.? 
  J. 
  

  

  Fusus 
  rigidus 
  (Sow.). 
  ? 
  J, 
  B, 
  CE, 
  V. 
  T. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  16. 
  

  

  rusticus 
  (Sow.). 
  B. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  18. 
  

  

  quadratus 
  (Sow.). 
  B, 
  V. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  17. 
  

  

  clathratus 
  (Sow.). 
  B, 
  V. 
  

  

  ? 
  sp. 
  B. 
  

  

  Nassa 
  costellata 
  (Sow.). 
  J, 
  B, 
  C, 
  T, 
  D. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  26. 
  Bed 
  10. 
  

   lineata 
  (Sow.). 
  C, 
  T, 
  W, 
  D- 
  CE 
  ? 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  25. 
  Mr. 
  Sollas 
  

  

  has 
  pointed 
  out 
  to 
  me 
  how 
  closely 
  this 
  resembles 
  the 
  existing 
  1ST. 
  reticosa 
  

  

  found 
  off 
  the 
  Philippine 
  Islands 
  in 
  9 
  fathoms. 
  Bed 
  10. 
  

   Cassidaria 
  ? 
  CE. 
  

   *Natica 
  g&ultma 
  (d'Orb.). 
  Common. 
  B. 
  Beds 
  7-10. 
  =N. 
  canaliculata(#0W.). 
  

  

  granosa 
  (Sow.). 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  7. 
  

  

  sp. 
  ? 
  W. 
  

  

  Dupinii 
  ? 
  (Leyrn.). 
  M. 
  

  

  Eauliniana 
  ? 
  (aV 
  Orb.). 
  M. 
  

  

  excavata? 
  (Michelin). 
  M. 
  

  

  ervyna? 
  (d'Orb.). 
  M. 
  

  

  Geinitzii 
  ? 
  (d'Orb.). 
  M. 
  

  

  Fossarus 
  carinatus=Naticacarinata 
  (Sow.). 
  B, 
  T. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  8. 
  

   Cerithium 
  gracile 
  = 
  Littorina 
  gracilis 
  (Sow.). 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  12. 
  T, 
  CE. 
  

  

  sp. 
  ? 
  J, 
  E, 
  D, 
  M. 
  

  

  Rostellaria 
  tricostata 
  (d' 
  Orb.). 
  M. 
  

  

  Tessalolax 
  retusa= 
  Rostellaria 
  retusa 
  (Sow.). 
  B. 
  Fitton, 
  pi. 
  xvii. 
  fig. 
  22. 
  

   *Aporrhais 
  Parkinsoni 
  (i¥<xw^.) 
  = 
  B.ostellaria 
  Parkinsoni 
  (Sow.). 
  Common 
  at 
  

  

  Blackdown. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  24. 
  Bed 
  10. 
  

   Dimorphosoma 
  calcarata= 
  Aporrhais 
  calcarata 
  (Sow.). 
  Very 
  common 
  at 
  Black» 
  

  

  down. 
  Bed 
  8 
  especially, 
  out 
  found 
  up 
  to 
  10. 
  

   neglecta 
  (Tate). 
  Common. 
  Fig. 
  in 
  Geol. 
  Mag. 
  1875, 
  pi. 
  xii. 
  fig. 
  13-15. 
  

  

  Bed 
  8 
  especially 
  ; 
  found 
  up 
  to 
  10. 
  

   Pterocella 
  macrostoma 
  (Sow.). 
  = 
  Rostellaria 
  m. 
  B. 
  Fitton, 
  pi. 
  xviii. 
  fig. 
  23. 
  

  

  The 
  five 
  preceding 
  are 
  given 
  as 
  described 
  by 
  Mr. 
  J. 
  S. 
  Gardner 
  in 
  the 
  Geol. 
  

   Mag., 
  1880, 
  who 
  suggests 
  that 
  D. 
  calcarata 
  might 
  be 
  the 
  male, 
  and 
  D. 
  neglecta 
  

   the 
  female. 
  In 
  bed 
  8 
  they 
  are 
  found 
  associated 
  together, 
  and 
  where 
  D. 
  calcarata 
  

   is 
  doubtless 
  the 
  commoner 
  form 
  of 
  the 
  two. 
  

  

  *Turritella 
  granulata 
  (Sow.). 
  Very 
  common, 
  especially 
  in 
  bed 
  8, 
  which 
  is 
  its 
  

   downward 
  limit. 
  It 
  occurs 
  also 
  above 
  bed 
  8 
  in 
  lesser 
  numbers 
  ; 
  and 
  there 
  

   is 
  a 
  notable 
  percentage 
  of 
  it 
  in 
  bed 
  10. 
  I 
  have 
  not 
  found 
  it 
  above 
  bed 
  10. 
  

   costata 
  (Sow.). 
  B, 
  CE. 
  

  

  angulata 
  (d'Orb.). 
  

  

  subalternans 
  (Briart 
  et 
  Cornet), 
  pi. 
  iii. 
  f. 
  45. 
  M. 
  

  

  sp.? 
  CE,D. 
  

  

  Scalaria 
  Fittoni 
  (J. 
  S. 
  Gardner). 
  J, 
  K, 
  B. 
  Geol. 
  Mag. 
  1876, 
  pi. 
  iii. 
  

   figs. 
  10-11. 
  

  

  climatospira 
  (J. 
  S. 
  Gardner). 
  K, 
  B. 
  Geol. 
  Mag. 
  pi. 
  iii. 
  fig. 
  13. 
  

  

  pulchra 
  (Sow.). 
  B. 
  Geol. 
  Mag. 
  1876, 
  pi. 
  iii. 
  fig. 
  14. 
  

  

  Dupiniana 
  (d'Orb.). 
  J, 
  K, 
  V. 
  Geol. 
  Mag. 
  1876, 
  pi. 
  iii. 
  fig. 
  15. 
  

  

  Queenii 
  (J. 
  S. 
  Gardner). 
  Geol. 
  Mag. 
  1876, 
  pi. 
  iii. 
  figs. 
  1-3. 
  

  

  sp. 
  ? 
  V, 
  CE, 
  D. 
  

  

  