﻿INFEEIOR 
  OOLITE 
  OF 
  SHIPTON 
  GORGE, 
  DORSET. 
  573 
  

  

  by 
  d'Orbigny. 
  The 
  section 
  (PI. 
  XIX. 
  fig. 
  10) 
  illustrates 
  the 
  internal 
  

   arrangement 
  of 
  the 
  zooecia 
  and 
  shows 
  the 
  large 
  surface-pores. 
  

   Longitudinal 
  sections 
  exhibit 
  the 
  cells 
  containing 
  coloured 
  grains 
  

   probably 
  of 
  oxide 
  of 
  iron. 
  

  

  4. 
  Entalophora 
  raripora, 
  d'Orb., 
  var. 
  anomala, 
  Reuss. 
  

   Entalophora 
  anomala, 
  Manzoni, 
  Brioz. 
  foss. 
  d. 
  Miocene 
  d'Austr. 
  

  

  ed 
  Ungh. 
  p. 
  10, 
  pi. 
  9. 
  fig. 
  3 
  (Denkschr. 
  Akad. 
  Wiss. 
  Wien, 
  Bd. 
  xxxix. 
  

   1878). 
  

  

  Zoarial 
  width 
  1*2 
  to 
  0*9 
  millim. 
  ; 
  zooecial 
  length 
  1*6, 
  width 
  0*3 
  ; 
  

   aperture 
  0*17. 
  

  

  The 
  zooecia 
  are 
  longer 
  and 
  rather 
  less 
  wide 
  than 
  in 
  d'Orbigny's 
  

   type 
  and 
  open 
  in 
  fours 
  around 
  the 
  stem. 
  Waters, 
  however, 
  classes 
  

   E. 
  anomala, 
  Reuss, 
  as 
  synonymous 
  with 
  E. 
  raripora, 
  d'Orb. 
  E. 
  gra- 
  

   cilis, 
  d'Orb., 
  would 
  be 
  as 
  well, 
  I 
  think, 
  classed 
  as 
  a 
  variety 
  of 
  E. 
  rari- 
  

   pora 
  also, 
  so 
  then 
  my 
  variety 
  corrugata 
  as 
  well 
  as 
  anomala, 
  Reuss, 
  

   might 
  be 
  placed 
  under 
  the 
  head 
  E. 
  raripora, 
  d'Orb. 
  One 
  finds 
  

   numerous 
  intermediate 
  forms. 
  

  

  5. 
  Entalophora 
  subgracilis, 
  d'Orb., 
  var. 
  corrugata, 
  nov. 
  (PI. 
  

  

  XVIII. 
  fig. 
  14.) 
  

  

  Entalophora 
  subgracilis, 
  d'Orb. 
  Prodr. 
  ii. 
  p. 
  267 
  (1847) 
  ; 
  Paleont. 
  

   Frang., 
  Terr. 
  Cret. 
  p. 
  788, 
  pi. 
  621. 
  figs. 
  4-6 
  (1850-52). 
  

  

  Zoarial 
  width. 
  0*5 
  millim. 
  ; 
  zooecial 
  length. 
  1*3, 
  width 
  0*2 
  ; 
  aper- 
  

   ture 
  0-1. 
  

  

  The 
  points 
  of 
  divergence 
  from 
  E. 
  subgracilis 
  are, 
  first, 
  the 
  greater 
  

   width 
  of 
  the 
  zoarium, 
  viz. 
  | 
  millim. 
  instead 
  of 
  ^ 
  millim.; 
  secondly, 
  

   the 
  more 
  numerous 
  zooecia, 
  five 
  to 
  a 
  series 
  instead 
  of 
  four. 
  Further- 
  

   more 
  the 
  surface 
  is 
  transversely 
  wrinkled 
  and 
  punctate. 
  There 
  are 
  

   solid, 
  irregularly 
  perforated 
  closures 
  within 
  the 
  zooecial 
  orifice. 
  

  

  EXPLANATION 
  OF 
  PLATES 
  XVII.-XIX. 
  

   Plate 
  XVII. 
  

  

  Fig. 
  1. 
  Proboscina 
  spatiosa, 
  sp. 
  n., 
  uuiserial 
  form. 
  X 
  10. 
  

   2, 
  3. 
  The 
  same, 
  ordinary 
  form. 
  X 
  10. 
  

  

  4. 
  Proboscina 
  incrustans, 
  sp. 
  n. 
  X 
  10. 
  

  

  5. 
  The 
  same, 
  gonoecium 
  ? 
  X 
  25. 
  

  

  6. 
  The 
  same, 
  zooecia, 
  flattened 
  ooecia 
  and 
  ovicell. 
  X25. 
  

  

  7. 
  8. 
  Diastopora 
  spatiosa, 
  sp/n., 
  with 
  capitulum 
  of 
  erect 
  branch. 
  X 
  6 
  & 
  7. 
  

  

  Plate 
  XYIII. 
  

  

  Figs. 
  1, 
  2. 
  Proboscina 
  spatiosa, 
  var. 
  brevis. 
  Xl2. 
  

   3-5. 
  The 
  same, 
  var. 
  brevior. 
  X8 
  & 
  12. 
  

   Qa. 
  Stomatopora 
  spirata, 
  sp. 
  n., 
  x6. 
  6 
  6. 
  A 
  portion, 
  Xl5. 
  

  

  7. 
  porrecta, 
  sp. 
  n. 
  X 
  25. 
  

  

  8. 
  The 
  same. 
  X 
  18. 
  

  

  9. 
  dichotomoides 
  (d'Orb.), 
  var. 
  attenuata. 
  xl5. 
  

  

  10. 
  11, 
  12. 
  Tubulipora 
  spatiosa, 
  sp. 
  n. 
  XlO. 
  

  

  13. 
  Idmonea 
  triquetra 
  (Lamx.), 
  var. 
  Parkinsoni. 
  XlO. 
  

  

  14. 
  Entalophora 
  subgracilis, 
  d'Orb., 
  -var. 
  corrugata. 
  X 
  10. 
  

  

  Q.J. 
  G.S. 
  No. 
  179. 
  2t 
  

  

  