﻿NEWTON 
  : 
  TEETIAEY 
  SHELLS 
  OF 
  THE 
  ISLAND 
  OF 
  COS. 
  367 
  

  

  k. 
  Akad. 
  Wiss., 
  vol. 
  xl, 
  pis. 
  i-iii, 
  pp. 
  213-314, 
  1880), 
  who 
  acknow- 
  

   ledged 
  in 
  a 
  footnote 
  (on 
  p. 
  223) 
  that 
  Tournouer 
  first 
  directed 
  attention 
  

   to 
  the 
  important 
  issues 
  originating 
  from 
  the 
  studies 
  of 
  the 
  English 
  

   authors, 
  as 
  well 
  as 
  recognizing 
  a 
  resemblance 
  existing 
  between 
  the 
  

   Cos 
  and 
  Slavonian 
  shells. 
  

  

  Professor 
  Judd, 
  in 
  a 
  masterly 
  review 
  of 
  the 
  German 
  monograph 
  on 
  

   Slavonia, 
  under 
  the 
  title 
  of 
  "Palaeontology 
  and 
  the 
  Doctrine 
  of 
  

   Descent" 
  {Nature, 
  vol. 
  xiv, 
  pp. 
  275-6, 
  1876), 
  eulogized 
  its 
  authors 
  as 
  

   furnishing 
  "important 
  evidence 
  on 
  the 
  great 
  question 
  of 
  evolution 
  ", 
  but 
  

   without 
  reference 
  to 
  the 
  earlier 
  memoir 
  of 
  our 
  own 
  naturalists. 
  It 
  is 
  

   not 
  intended 
  to 
  minimize 
  in 
  any 
  way 
  the 
  enormous 
  value 
  of 
  the 
  

   German 
  treatise 
  of 
  1875, 
  but 
  simply 
  to 
  point 
  out 
  that 
  the 
  primary 
  

   results 
  arrived 
  at 
  by 
  Forbes 
  and 
  Spratt 
  with 
  regard 
  to 
  the 
  Island 
  of 
  

   Cos 
  were 
  the 
  same 
  as 
  those 
  advanced 
  nearly 
  thirty 
  years 
  later 
  by 
  

   Neumayr 
  & 
  Paul 
  in 
  connexion 
  with 
  Slavonia. 
  Neumayr 
  & 
  Paul 
  

   illustrated 
  their 
  work 
  with 
  numerous 
  figures 
  of 
  Viviparus 
  and 
  the; 
  

   other 
  Mollusca 
  found 
  in 
  the 
  Slavonian 
  deposits, 
  and 
  so 
  made 
  it 
  possible 
  

   to 
  exhibit 
  the 
  various 
  mutations 
  in 
  form 
  from 
  the 
  smooth 
  or 
  oldest 
  

   shells 
  to 
  those 
  found 
  in 
  beds 
  of 
  later 
  age 
  presenting 
  more 
  complicated 
  

   sculptures, 
  such 
  details 
  being 
  set 
  out 
  in 
  a 
  genetic 
  table 
  to 
  better 
  

   explain 
  the 
  ancestry 
  of 
  the 
  different 
  species 
  of 
  Viviparus 
  as 
  found 
  in 
  

   those 
  beds. 
  It 
  is 
  of 
  interest 
  to 
  state 
  that 
  the 
  British 
  Museum 
  (Natural 
  

   History) 
  now 
  jjossesses 
  a 
  framed 
  series 
  of 
  these 
  species 
  as 
  illustrative 
  

   of 
  this 
  genetic 
  scheme, 
  which 
  is 
  placed 
  in 
  the 
  Geological 
  Department. 
  

  

  It 
  should 
  be 
  also 
  mentioned 
  that 
  the 
  shells 
  from 
  the 
  Island 
  of 
  Cos 
  

   obtained 
  by 
  Forbes 
  and 
  Spratt 
  were 
  deposited 
  in 
  the 
  Museum 
  of 
  

   Practical 
  Geology, 
  Jermyn 
  Street, 
  London, 
  and 
  afterwards 
  transferred, 
  

   with 
  other 
  foreign 
  collections, 
  to 
  the 
  British 
  Museum 
  ; 
  but 
  out 
  of 
  

   the 
  six 
  specimens 
  figured 
  in 
  the 
  original 
  account 
  only 
  two 
  can 
  

   be 
  identified 
  at 
  the 
  present 
  day 
  as 
  original 
  types, 
  these 
  being 
  

   determinable 
  as 
  Viviparus 
  coa, 
  Tournouer, 
  and 
  Neritina 
  coa, 
  Neumayr, 
  

   which 
  answer 
  respectively 
  to 
  figures 
  3 
  and 
  5 
  of 
  the 
  series. 
  

  

  Through 
  the 
  researches 
  of 
  Tournouer 
  and 
  Neumayr 
  it 
  is 
  possible 
  to 
  

   determine 
  the 
  species 
  represented 
  by 
  the 
  six 
  figures 
  given 
  on 
  the 
  old 
  

   plate 
  of 
  Forbes 
  and 
  Spratt, 
  as 
  follows 
  (see 
  Plate 
  accompanying 
  the 
  

   present 
  account): 
  — 
  

  

  Fig. 
  1. 
  Viviparus 
  Tournoueri, 
  Neumayr. 
  

  

  ,, 
  2. 
  V. 
  Forbesi 
  \ 
  ^ 
  

  

  o 
  Tr 
  1 
  i 
  iournouer. 
  

   ,, 
  3. 
  V. 
  coa'- 
  } 
  

  

  4. 
  Ne?'itina 
  dorica 
  

  

  5. 
  N. 
  coa 
  I 
  

  

  [ 
  Neumayr. 
  

   6. 
  Neritina, 
  sp. 
  inclet. 
  

  

  ^ 
  Not 
  to 
  be 
  confused 
  with 
  an 
  undescribed 
  and 
  unfigured 
  form 
  from 
  the 
  Island 
  

   of 
  Cos 
  referred 
  to 
  by 
  Neumayr 
  & 
  Paul 
  as 
  Viviparus 
  coa, 
  which 
  is 
  of 
  

   smooth 
  character, 
  being 
  related 
  to 
  V. 
  Fuchsi, 
  Neumayr, 
  and 
  therefore 
  

   belonging 
  to 
  the 
  oldest 
  beds 
  (Abhandl. 
  k. 
  k. 
  Geol. 
  Reichs., 
  vol. 
  vii, 
  pt. 
  iii, 
  

   pi. 
  X 
  and 
  its 
  explanation, 
  1875). 
  Neither 
  should 
  this 
  shell 
  be 
  considered 
  

   as 
  Paludina 
  (Vivipara) 
  Gorceixi 
  of 
  Tournouer, 
  as 
  advocated 
  by 
  that 
  

   author, 
  which 
  is 
  less 
  prominently 
  ribbed 
  (Ann. 
  Sci. 
  l^cole 
  Norm. 
  Sup., 
  

   ser. 
  II, 
  vol. 
  V, 
  pi. 
  iii, 
  fig. 
  5, 
  p. 
  460, 
  1876). 
  

  

  