﻿1863.] 
  t 
  - 
  DUNCAN 
  "WEST 
  INDIAN 
  CORALS. 
  27 
  

  

  nearly 
  perpendicular. 
  The 
  laminae 
  are 
  a 
  little 
  thicker 
  at 
  the 
  wall 
  

   than 
  elsewhere, 
  and 
  are 
  granular. 
  There 
  are 
  six 
  systems 
  of 
  five 
  

   cycles, 
  the 
  primary 
  and 
  secondary 
  septa 
  being 
  nearly 
  equal. 
  The 
  

   columella 
  projects 
  considerably 
  at 
  the 
  bottom 
  of 
  the 
  fossa, 
  and 
  is 
  

   long, 
  sharply 
  convex, 
  not 
  very 
  broad, 
  and 
  almost 
  subcristiform 
  above. 
  

   Pali 
  long, 
  delicate, 
  often 
  curved, 
  most 
  visible 
  before 
  the 
  penultimate, 
  

   but 
  existing 
  also 
  before 
  the 
  antepenultimate 
  septa. 
  Costae 
  distinct 
  

   to 
  the 
  base 
  ; 
  the 
  largest 
  are 
  subcristiform 
  at 
  the 
  margin 
  and 
  on 
  the 
  body 
  

   of 
  the 
  Coral, 
  and 
  all 
  are 
  tolerably 
  well 
  developed 
  and 
  granular. 
  

   Epitheca 
  pellicular^ 
  and 
  granular. 
  Length 
  of 
  calice 
  1^ 
  inch 
  ; 
  breadth 
  

   -j&y 
  inch 
  ; 
  depth 
  of 
  fossa 
  | 
  inch 
  ; 
  height 
  of 
  Coral 
  ly 
  6 
  ^ 
  inch. 
  

  

  Prom 
  the 
  Jamaican 
  Miocene. 
  Coll. 
  Brit. 
  Mus. 
  

  

  This 
  species 
  has 
  but 
  a 
  very 
  distant 
  alliance 
  with 
  one 
  known 
  form 
  

   — 
  the 
  T. 
  lineatus, 
  and 
  its 
  long 
  and 
  rather 
  nat^columella 
  and 
  delicate 
  

   pali 
  approach 
  it 
  to 
  the 
  Placocyathi. 
  

  

  8. 
  Stylophora 
  raristella, 
  var. 
  1, 
  Edwards 
  & 
  Haime. 
  

  

  A 
  large 
  cylindrical 
  corallum 
  with 
  a 
  central 
  cavity 
  ; 
  it 
  is 
  an 
  im- 
  

   mense 
  branch 
  of 
  a 
  large 
  variety 
  of 
  the 
  well-known 
  European 
  Miocene 
  

   form. 
  Thickness 
  of 
  branch 
  2\ 
  inches. 
  

  

  From 
  the 
  silt 
  of 
  the 
  Sandstone 
  plain, 
  San 
  Domingo. 
  Coll. 
  Geol. 
  

   Soc. 
  

  

  9. 
  Stylophora 
  affinis, 
  var. 
  2, 
  nobis. 
  

  

  The 
  first 
  variety 
  has 
  small 
  calices 
  and 
  a 
  wide 
  granulated 
  interca- 
  

   licular 
  space. 
  This 
  second 
  variety 
  has 
  a 
  slightly 
  projecting 
  upper 
  lip 
  

   to 
  the 
  calices, 
  and 
  verrucosities 
  on 
  the 
  surface 
  of 
  the 
  Coral. 
  

  

  From 
  the 
  Nivaje 
  and 
  Cerro 
  Gordo 
  shales, 
  San 
  Domingo. 
  Coll. 
  

   Geol. 
  Soc. 
  

  

  10. 
  Dichocoznia 
  tuberosa, 
  var., 
  nobis. 
  

  

  A 
  variety 
  of 
  this 
  species 
  occurs 
  in 
  the 
  tufaceous 
  limestone 
  ; 
  it 
  is 
  

   characterized 
  by 
  closer 
  calices, 
  which 
  are 
  very 
  fissiparous. 
  

   Coll. 
  Geol. 
  Soc. 
  

  

  11. 
  Stephanocoznia 
  intersepta, 
  var., 
  Edwards 
  & 
  Haime. 
  

   This 
  Coral 
  has 
  thinner 
  and 
  less 
  dense 
  walls 
  than 
  the 
  type. 
  _ 
  

   From 
  the 
  silt 
  of 
  the 
  Sandstone 
  plain, 
  San 
  Domingo. 
  This 
  is 
  a 
  

  

  recent 
  species, 
  being 
  found 
  in 
  the 
  American 
  seas 
  and 
  in 
  the 
  South 
  

   Pacific 
  (Lamarck). 
  

  

  The 
  specimens 
  are 
  in 
  different 
  conditions, 
  one 
  alone 
  being 
  rolled 
  

   and 
  semifossil 
  ; 
  the 
  others 
  are 
  well 
  preserved 
  and 
  light. 
  

  

  12. 
  Caryophyllia* 
  affinis, 
  spec. 
  nov. 
  PI. 
  III. 
  fig. 
  1. 
  

   CaryophylUa, 
  spec, 
  nov., 
  Lonsdale 
  MS. 
  

  

  ♦♦Corallum 
  simple, 
  straight, 
  " 
  cyathiform 
  oval," 
  and 
  tall 
  ; 
  it 
  pre- 
  

   sents 
  a 
  large 
  irregular 
  base 
  of 
  former 
  attachment. 
  Costae 
  numerous, 
  

   furnished 
  with 
  sharp 
  spines 
  which 
  project 
  upwards, 
  and 
  which, 
  with 
  

  

  * 
  I 
  have 
  adopted 
  the 
  generally 
  received 
  nomenclature, 
  but 
  the 
  genus 
  is 
  now 
  

   called 
  by 
  Milne-Edwards 
  Lithophyllia. 
  

  

  