﻿136 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  it 
  is 
  impossible 
  to 
  allocate 
  all 
  these 
  various 
  forms 
  to 
  their 
  proper 
  

   relative 
  positions, 
  nor 
  are 
  we 
  at 
  all 
  certain 
  at 
  present 
  to 
  which 
  

   helicoid 
  genus 
  they 
  rightly 
  belong 
  ; 
  but 
  so 
  far 
  as 
  concerns 
  those 
  with 
  

   which 
  we 
  are 
  more 
  immediately 
  dealing 
  just 
  now, 
  the 
  following 
  

   general 
  arrangement 
  may 
  be 
  hazarded 
  : 
  — 
  

  

  A. 
  Sharp-lipped 
  Group 
  : 
  without 
  internal 
  riblet. 
  

  

  II. 
  revelata, 
  Fer., 
  of 
  Michaud 
  : 
  a 
  rare 
  Alpine 
  foim 
  for 
  which, 
  

   when 
  rediscovered, 
  a 
  name 
  will 
  be 
  wanted, 
  the 
  present 
  one 
  

   being 
  invalid, 
  Ferussac's 
  species 
  being 
  indeterminate. 
  

  

  H. 
  siihvirescens, 
  Bellamj^, 
  for 
  the 
  British 
  shell. 
  

  

  Syn. 
  II. 
  ptiluta, 
  Bourgt., 
  and 
  possibly 
  a 
  few 
  others. 
  

  

  B. 
  Everted, 
  white-lipped 
  group, 
  with 
  internal, 
  white 
  riblet. 
  

   //. 
  montivaga, 
  Westerlund. 
  

  

  Syn. 
  II. 
  sahijirina, 
  Serv. 
  

   II. 
  pone7itina, 
  Morel. 
  (= 
  occidentalis, 
  Recluz). 
  

  

  Syn. 
  //. 
  lishotiensis, 
  Pfr., 
  and 
  probably 
  the 
  majority 
  of 
  the 
  named 
  

   continental 
  forms. 
  

  

  ON 
  THE 
  GENEEIC 
  NAMES 
  FOR 
  THE 
  TWO 
  BRITISH 
  ELLOBIID^ 
  

   [OLIM 
  AURICULID^], 
  MYOSOTIS, 
  DRAPARNAUD 
  (= 
  DENTI- 
  

   CULATUS, 
  MONTAGU) 
  AND 
  BIDENTATA, 
  MONTAGU. 
  

  

  By 
  A. 
  S. 
  Kennari), 
  F.G.S., 
  and 
  B. 
  B. 
  Woodward, 
  F.L.S. 
  

  

  Read 
  13th 
  June, 
  1919. 
  

  

  These 
  two 
  species 
  of 
  mollusca 
  are 
  to-day 
  considered 
  to 
  represent 
  

   genera 
  quite 
  distinct 
  from 
  any 
  of 
  the 
  following, 
  to 
  one 
  or 
  other 
  of 
  

   which 
  they 
  have 
  in 
  the 
  past 
  been 
  referred, 
  viz. 
  : 
  Carychirun, 
  

   Miiller, 
  1774 
  (altered 
  to 
  Carichium 
  by 
  Ferussac 
  in 
  1807), 
  Pythia, 
  

   Bolten, 
  1798, 
  Ellobium, 
  Bolteu, 
  1798 
  {= 
  Auricula, 
  Lamarck, 
  1799), 
  

   Volvaria, 
  Lamaick, 
  1801, 
  Acteon 
  and 
  llelntnpus, 
  ^lontfort, 
  1810, 
  and 
  

   Conovula, 
  Schweigger, 
  1820 
  (= 
  Conoruhis, 
  auctt., 
  founded 
  on 
  

   Lamarck's 
  "Conovule?" 
  of 
  1812). 
  

  

  Incidentally 
  their 
  history 
  begins 
  with 
  that 
  of 
  a 
  shell 
  which 
  does 
  

   not 
  belong 
  to 
  their 
  group, 
  but 
  which 
  at 
  first 
  was 
  confounded 
  with 
  

   tliem. 
  A 
  small 
  Valuta 
  was 
  depicted 
  in 
  Boys 
  & 
  Walker's 
  Tentacea 
  

   minuta 
  rariora 
  [1784], 
  fig. 
  61 
  ; 
  this 
  was 
  copied 
  in 
  Kanmacher's 
  edition 
  

   of 
  Adams' 
  Essays 
  on 
  the 
  Microscope, 
  1798, 
  pi. 
  xiv, 
  fig. 
  27, 
  and 
  on 
  

   p. 
  639 
  of 
  the 
  text 
  given 
  Jacob's 
  name 
  of 
  Voluta 
  alia. 
  It 
  was 
  adopted 
  

   under 
  that 
  name 
  by 
  Turton 
  in 
  his 
  edition 
  of 
  A 
  General 
  System 
  of 
  

   Nature, 
  by 
  Linnaeus, 
  vol. 
  iv, 
  1802, 
  p. 
  361, 
  and 
  again 
  by 
  Montagu 
  in 
  

   his 
  Testacea 
  Briiamiica, 
  1803, 
  p. 
  235. 
  Montagu 
  reverts 
  to 
  this 
  shell 
  

   in 
  his 
  Supplemnit, 
  1808, 
  p. 
  101, 
  a 
  propos 
  of 
  a 
  very 
  similar 
  specimen 
  

   which 
  he 
  describes, 
  and 
  suggests 
  that 
  the 
  original 
  example 
  sent 
  by 
  

   Boys 
  may 
  have 
  been 
  a 
  young 
  Bulla 
  ohtusa 
  \_^ 
  lietusa 
  alba 
  olim, 
  

   Toriiatina 
  ohtusa 
  (Mont.)']. 
  From 
  his 
  description 
  of 
  the 
  second 
  

   specimen, 
  Forbes 
  & 
  Hanley 
  were 
  led 
  to 
  infei', 
  Hist. 
  Brit. 
  Moll., 
  

  

  ' 
  Proc. 
  Malac. 
  Soc. 
  Lond., 
  xi, 
  pp. 
  300-301. 
  

  

  