﻿MR. 
  E. 
  B. 
  NEWTON 
  ON 
  EOSSILS 
  FROM 
  MADAGASCAR. 
  331 
  

  

  •will 
  require 
  to 
  be 
  modified, 
  and 
  perhaps 
  some 
  of 
  the 
  opinions 
  ex- 
  

   pressed 
  cancelled 
  ; 
  and 
  until 
  the 
  region 
  is 
  explored 
  and 
  surveyed 
  by 
  

   practical 
  and 
  competent 
  men 
  we 
  cannot 
  hope 
  to 
  see 
  the 
  geological 
  

   structure 
  of 
  the 
  country 
  properly 
  unravelled 
  or 
  its 
  phenomena 
  fully 
  

   explained. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XIII. 
  

  

  Geological 
  Map 
  of 
  the 
  Northern 
  part 
  of 
  Madagascar. 
  

   (Scale 
  about 
  80 
  miles 
  = 
  1 
  inch.) 
  

  

  APPENDIX. 
  

  

  Notes 
  on 
  Fossils 
  from 
  Madagascar, 
  with 
  Descriptions 
  of 
  two 
  

   New 
  Species 
  of 
  Jurassic 
  Pelectpoda 
  from 
  that 
  Island. 
  By 
  

   R. 
  Bellen 
  Newton, 
  Esq., 
  F.G.S., 
  British 
  Museum 
  (Natural 
  

   History). 
  

  

  [Plate 
  XIV.] 
  

  

  These 
  fossils 
  were 
  referred 
  to 
  me 
  for 
  determination 
  by 
  Dr. 
  Wood- 
  

   ward, 
  F.R.S. 
  

  

  They 
  are 
  mostly 
  in 
  a 
  bad 
  state 
  of 
  preservation, 
  many 
  of 
  them 
  

   being 
  merely 
  casts. 
  The 
  collection, 
  however, 
  is 
  important 
  as 
  form- 
  

   ing 
  nearly 
  the 
  first 
  series 
  of 
  Malagasy 
  fossils 
  that 
  have 
  ever 
  reached 
  

   this 
  country, 
  and, 
  on 
  this 
  account, 
  we 
  are 
  considerably 
  indebted 
  to 
  

   the 
  collector, 
  the 
  Rev. 
  Richard 
  Baron, 
  for 
  having 
  furnished 
  us 
  with 
  

   material 
  explaining 
  the 
  palseontological 
  history 
  of 
  certain 
  parts 
  of 
  

   Madagascar. 
  The 
  specimens, 
  obtained 
  from 
  various 
  localities 
  in 
  the 
  

   north-west 
  of 
  the 
  island, 
  represent 
  the 
  Eocene, 
  Cretaceous, 
  and 
  

   Jurassic 
  formations. 
  I 
  have 
  included 
  in 
  this 
  Appendix 
  a 
  notice 
  of 
  

   a 
  few 
  fossils 
  kindly 
  lent 
  me 
  by 
  the 
  Rev. 
  Dr. 
  Deane 
  of 
  Edgbaston, 
  

   which 
  were 
  collected 
  several 
  years 
  ago 
  in 
  South-west 
  Madagascar 
  

   by 
  the 
  Rev. 
  J. 
  Richardson 
  of 
  Antananarivo. 
  They 
  consist 
  of 
  Jurassic 
  

   specimens, 
  three 
  of 
  which 
  are 
  in 
  such 
  good 
  condition 
  that 
  I 
  have 
  had 
  

   them 
  figured, 
  one 
  being 
  a 
  new 
  species 
  of 
  Pelecypoda, 
  viz. 
  Sphcera 
  

   madagascariensis. 
  

  

  In 
  drawing 
  up 
  this 
  paper 
  I 
  wish 
  to 
  acknowledge 
  assistance 
  kindly 
  

   rendered 
  me 
  by 
  R. 
  Etheridge, 
  Esq., 
  F.R.S. 
  ; 
  G. 
  C. 
  Crick, 
  Esq., 
  F.G.S. 
  ; 
  

   and 
  C. 
  D. 
  Sherborn, 
  Esq., 
  F.G.S. 
  , 
  in 
  their 
  respective 
  subjects. 
  

  

  TERTIARY. 
  

  

  Pisces. 
  

  

  Some 
  Fish 
  Otoliths 
  accompanying 
  the 
  collection 
  were, 
  I 
  am 
  in- 
  

   formed, 
  discovered 
  on 
  the 
  surface 
  of 
  the 
  ground 
  at 
  Ankoala, 
  so, 
  in 
  

   all 
  probability, 
  they 
  are 
  of 
  recent 
  origin, 
  though 
  bodies 
  similar 
  to 
  

   them 
  in 
  form 
  and 
  structure 
  do 
  occur 
  in 
  the 
  Upper 
  Eocene 
  (Barton 
  

   Beds) 
  of 
  Hampshire. 
  

  

  Mollesca. 
  

  

  This 
  group 
  is 
  represented 
  by 
  several 
  internal 
  casts 
  of 
  Gasteropoda 
  

  

  