﻿218 
  H. 
  H. 
  GODWIN-ATJSTEX 
  ON 
  A 
  FOSSIL 
  

  

  23. 
  (9ft 
  a 
  fossil 
  Species 
  of 
  Camptoceras, 
  a 
  Freshwater 
  Mollttsk 
  from 
  

   the 
  Eocene 
  of 
  Sheeeness-on-Sea. 
  By 
  Lieut. 
  -Colonel 
  H. 
  H. 
  

   Godwin-Austen. 
  F.B.S., 
  P.G.S. 
  (Head 
  March 
  22, 
  1882.) 
  

  

  [Plate 
  V.] 
  

  

  I 
  have 
  now 
  had 
  by 
  me 
  for 
  a 
  long 
  time, 
  waiting 
  for 
  description, 
  

   some 
  very 
  interesting 
  fossils, 
  obtained 
  by 
  Mr. 
  W. 
  H. 
  Shrubsole 
  near 
  

   Sheerness 
  ; 
  and 
  I 
  owe 
  Mr. 
  Shrubsole 
  some 
  apology 
  for 
  retaining 
  

   them 
  so 
  long 
  unnoticed. 
  In 
  July 
  1880, 
  when 
  looking 
  over 
  some 
  

   of 
  Mr. 
  Shrubsole's 
  fossils 
  from 
  the 
  above 
  neighbourhood, 
  he 
  showed 
  

   me 
  this 
  specimen, 
  which, 
  he 
  informed 
  me, 
  had 
  very 
  much 
  puzzled 
  

   several 
  naturalists 
  to 
  whom 
  he 
  had 
  submitted 
  it. 
  It 
  recalled 
  at 
  

   once 
  an 
  East-Indian 
  form 
  with 
  which 
  I 
  was 
  familiar 
  ; 
  but 
  I 
  could 
  

   not 
  at 
  the 
  moment 
  give 
  Mr. 
  Shrubsole 
  the 
  name. 
  On 
  returning 
  to 
  

   town 
  on 
  the 
  2nd 
  of 
  August 
  I 
  looked 
  up 
  the 
  genus 
  in 
  my 
  collection, 
  

   and 
  wrote 
  (confirming 
  my 
  original 
  opinion) 
  that 
  I 
  considered 
  the 
  

   shells 
  to 
  belong 
  to 
  Benson's 
  genus 
  Camptoceras. 
  Dr. 
  H. 
  "Woodward 
  

   saw 
  the 
  same 
  specimen 
  in 
  September 
  1880, 
  and 
  expressed 
  the 
  same 
  

   opinion 
  in 
  a 
  letter 
  of 
  the 
  23rd 
  to 
  Mr. 
  Shrubsole 
  ; 
  and 
  on 
  hearing 
  I 
  

   had 
  previously 
  seen 
  the 
  specimen 
  and 
  identified 
  the 
  genus, 
  he 
  for- 
  

   warded 
  the 
  same 
  to 
  me 
  in 
  February 
  1881. 
  I 
  may 
  also 
  mention 
  that 
  

   Messrs. 
  Etheridge 
  and 
  Newton 
  in 
  October, 
  having 
  seen 
  Mr. 
  Wood- 
  

   ward's 
  letter 
  and 
  reexamined 
  the 
  specimen, 
  were 
  also 
  of 
  the 
  same 
  

   opinion. 
  

  

  As 
  it 
  is 
  the 
  first 
  record 
  of 
  the 
  genus 
  occurring 
  fossil, 
  I 
  shall 
  enter 
  

   somewhat 
  fully 
  into 
  an 
  account 
  of 
  it, 
  giving 
  Benson's 
  original 
  

   description, 
  and 
  noticing 
  the 
  species 
  now 
  known 
  to 
  us. 
  

  

  Genus 
  Camptoceras, 
  Benson. 
  

  

  Camptoceras, 
  Benson, 
  Calcutta 
  Journ. 
  of 
  Nat. 
  Hist. 
  p. 
  465 
  (1843) 
  ; 
  

   Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  (2) 
  vol. 
  xv. 
  p. 
  9 
  (1855). 
  

  

  " 
  Testa 
  sinistrorsa, 
  imperforata, 
  elongato-elliptica, 
  spira 
  soluta, 
  

   apice 
  acutiusculo, 
  sutura 
  late 
  et 
  profunde 
  excavata 
  (re 
  vera 
  omnino 
  

   carente) 
  ; 
  anfractibus 
  3-4 
  angustis 
  elongatis, 
  superne 
  et 
  subtus 
  

   carinatis, 
  lateribus 
  planulatis 
  ; 
  apicali 
  elongato-acuminato, 
  longe 
  ex- 
  

   serto 
  ; 
  ultimo 
  antice 
  superne 
  descendente, 
  carinato 
  ; 
  apertura 
  soluta, 
  

   integra, 
  magna, 
  spiram 
  non 
  aequante, 
  elongato-elliptica, 
  angusti- 
  

   uscuia, 
  superne 
  et 
  ad 
  basin 
  arcuatim 
  angulata 
  ; 
  peristomate 
  acuto 
  ; 
  

   operculo 
  nullo." 
  

  

  The 
  first 
  species, 
  C. 
  terebra 
  * 
  (Plate 
  V. 
  fig. 
  8), 
  on 
  which 
  it 
  was 
  

   founded, 
  was 
  taken 
  by 
  Dr. 
  Bacon, 
  in 
  company 
  with 
  Mr. 
  Benson, 
  in 
  

   a 
  piece 
  of 
  water 
  that 
  had 
  previously 
  formed 
  a 
  portion 
  of 
  the 
  Earn 
  

  

  * 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  (2) 
  vol. 
  xv. 
  p. 
  10 
  (1855), 
  with 
  outline 
  figure 
  ; 
  Journ. 
  

   Asiat. 
  Soc. 
  Bengal, 
  vol. 
  xl. 
  1871, 
  pi. 
  ii. 
  figs. 
  1, 
  la 
  ; 
  Conch. 
  Indica, 
  p. 
  64, 
  

   pi. 
  clviii. 
  figs. 
  1, 
  2 
  ; 
  Adams, 
  Gen. 
  Recent 
  Mol. 
  p. 
  258, 
  pi. 
  lxxxiv. 
  fig. 
  1. 
  

  

  