﻿20 
  proceedings 
  op 
  the 
  geological 
  society. 
  [nov. 
  18, 
  

  

  November 
  18, 
  1863. 
  

  

  Charles 
  Tylor, 
  Esq., 
  F.L.S., 
  24 
  Holloway 
  Place, 
  Holloway, 
  N. 
  ; 
  

   and 
  William 
  Brightmore 
  Mitchell, 
  Esq., 
  16 
  Broom 
  Hill, 
  Sheffield, 
  

   were 
  elected 
  Fellows. 
  

  

  The 
  following 
  communications 
  were 
  read 
  : 
  — 
  

  

  1. 
  On 
  the 
  Fossil 
  Corals 
  of 
  the 
  West 
  Indian 
  Islands. 
  — 
  Part 
  II. 
  

   By 
  P. 
  Martin 
  Duncan, 
  M.B. 
  Lond., 
  F.G.S., 
  &c. 
  

  

  [Plates 
  II.-V.] 
  

   Contents. 
  

  

  I. 
  Introduction. 
  

   II. 
  List 
  of 
  the 
  Species. 
  

  

  III. 
  Description 
  of 
  the 
  Species. 
  

  

  IV. 
  General 
  Observations. 
  

  

  V. 
  Alliances 
  of 
  the 
  Species. 
  

  

  I. 
  Introduction. 
  

  

  Immediately 
  after 
  the 
  first 
  part 
  of 
  this 
  communication 
  was 
  read*, 
  

   Mr. 
  Lonsdale 
  forwarded 
  to 
  the 
  Society's 
  Museum 
  a 
  large 
  collection 
  

   of 
  specimens 
  from 
  San 
  Domingo, 
  and 
  a 
  manuscript 
  in 
  which 
  many 
  

   of 
  them 
  were 
  described. 
  Ten 
  years 
  had 
  elapsed 
  since 
  the 
  latter 
  

   had 
  been 
  written, 
  and 
  for 
  that 
  period 
  some 
  most 
  important 
  fossils 
  

   have 
  been 
  lost 
  to 
  science. 
  Several 
  of 
  the 
  species 
  had 
  been 
  described 
  

   by 
  me 
  before 
  Mr. 
  Lonsdale's 
  MS. 
  came 
  to 
  handf 
  ; 
  and 
  during 
  the 
  last 
  

   few 
  years 
  the 
  knowledge 
  of 
  the 
  anatomy 
  and 
  classification 
  of 
  the 
  

   Zoantharia 
  has 
  so 
  increased, 
  that 
  the 
  results 
  of 
  the 
  careful 
  studies 
  

   of 
  ten 
  years 
  ago 
  are 
  now 
  the 
  common 
  property 
  of 
  naturalists. 
  

  

  The 
  collection 
  forms 
  part 
  of 
  Col. 
  Heneken's 
  gift 
  to 
  the 
  Society, 
  and 
  

   Mr. 
  Lonsdale's 
  manuscript 
  contains 
  elaborate 
  descriptions 
  of 
  many, 
  

   but 
  not 
  of 
  all 
  the 
  species, 
  and 
  having 
  usually 
  the 
  generic 
  name 
  alone 
  

   appended. 
  

  

  Mr. 
  Lonsdale 
  wished 
  his 
  essay 
  to 
  be 
  placed 
  in 
  the 
  Library 
  of 
  the 
  

   Geological 
  Society, 
  and 
  gave 
  me 
  permission 
  to 
  make 
  such 
  extracts 
  as 
  

   I 
  might 
  think 
  fit. 
  In 
  describing 
  the 
  new 
  species 
  of 
  this 
  collection, 
  

   reference 
  will 
  be 
  constantly 
  made 
  to 
  Mr. 
  Lonsdale's 
  MS. 
  ; 
  but 
  their 
  

   diagnosis 
  was 
  studied 
  irrespectively 
  of 
  his 
  elaborate 
  labours 
  ; 
  and, 
  

   although 
  I 
  venture, 
  now 
  and 
  then, 
  to 
  differ 
  from 
  him, 
  I 
  am 
  most 
  

   anxious 
  to 
  testify 
  to 
  the 
  loss 
  the 
  Society 
  has 
  incurred 
  by 
  his 
  long 
  

   retention 
  of 
  a 
  most 
  able 
  essay. 
  

  

  The 
  specimens 
  about 
  to 
  be 
  described 
  were 
  derived 
  from 
  the 
  Ni- 
  

   vaje, 
  Angostina, 
  and 
  Postrero 
  shales, 
  the 
  tufaceous 
  limestone, 
  and 
  the 
  

   Cerro 
  Gordo 
  district, 
  — 
  the 
  Miocene 
  strata 
  of 
  San 
  Domingo. 
  A 
  few 
  

   were 
  collected 
  from 
  the 
  silt 
  of 
  a 
  Sandstone 
  plain, 
  and, 
  from 
  the 
  nature 
  

   of 
  the 
  Corals, 
  it 
  is 
  evident 
  that 
  this 
  locality 
  contains 
  the 
  washings 
  of 
  

   the 
  raised 
  reefs 
  as 
  well 
  as 
  recent 
  forms. 
  

  

  I 
  have 
  also 
  described 
  some 
  new 
  species 
  from 
  Jamaica 
  and 
  Antigua. 
  

  

  * 
  See 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xix. 
  pp. 
  400 
  et 
  seq. 
  

   t 
  Astroea 
  endothecata, 
  nobis 
  ; 
  Bichoccenia 
  tuberosa, 
  nobis 
  ; 
  Placocyathus 
  Bar- 
  

   retti, 
  nobis 
  ; 
  Astraa 
  cylindrka, 
  nobis. 
  

  

  