﻿KKNNAIID 
  & 
  WOOBWAED 
  : 
  ON 
  HELIX 
  EEVELATA, 
  BRITT. 
  AUCTT. 
  lo5 
  

  

  collection 
  his 
  H. 
  Ushonensis 
  {Symh. 
  Hist. 
  Helic, 
  iii, 
  1846, 
  p. 
  68), 
  but 
  

   subsequently 
  (Mon. 
  Relic. 
  , 
  i, 
  1848, 
  p. 
  131) 
  acknowledfjed 
  it 
  to 
  be 
  

   a 
  synonym 
  of 
  Morelet's 
  species 
  which 
  he 
  accepted 
  under 
  llecluz's 
  

   amended 
  name 
  of 
  occidentalis. 
  Under 
  If. 
  revelata, 
  Fer., 
  PfeifiFer 
  

   {Mon. 
  Helic, 
  i, 
  p. 
  65) 
  placed 
  Michaud's 
  shell 
  as 
  well 
  as 
  tlie 
  British 
  

   revelata 
  of 
  Gray, 
  adding 
  II. 
  ladiella, 
  Ziegl. 
  In 
  a 
  later 
  volume 
  he 
  

   further 
  included 
  Brown's 
  record, 
  thus 
  showing 
  that 
  he 
  had 
  not 
  

   carefully 
  discriminated 
  the 
  several 
  forms. 
  

  

  Dupiiy 
  {Rist. 
  Nat. 
  Moll. 
  France, 
  p. 
  189, 
  1848, 
  pi. 
  viii, 
  f. 
  9) 
  adopts 
  

   Morelet's 
  species 
  and, 
  overlooking 
  tlie 
  fact 
  that 
  both 
  were 
  described 
  

   as 
  having 
  live 
  whorls, 
  considers 
  (p, 
  191) 
  Michaud's 
  revelata 
  to 
  be 
  

   the 
  young 
  form 
  with 
  incomplete 
  peristome. 
  He 
  adds 
  in 
  a 
  note 
  

   (p. 
  192) 
  Michaud's 
  description 
  in 
  full 
  followed 
  by 
  that 
  of 
  Gray 
  for 
  

   the 
  British 
  shell, 
  which 
  he 
  evidently, 
  Avith 
  a 
  certain 
  amount 
  of 
  

   doubt, 
  thought 
  might 
  be 
  the 
  same. 
  

  

  Moquin-Tandon 
  [Risi. 
  Nat. 
  Moll. 
  France, 
  ii, 
  p. 
  221, 
  1856, 
  pi. 
  xvii, 
  

   f. 
  10-13) 
  cites 
  Morelet's 
  species 
  under 
  Recluz' 
  name 
  oi 
  occidentalis, 
  

   and 
  considers 
  the 
  revelata 
  of 
  Michaud, 
  but 
  not 
  that 
  of 
  Ferussac 
  or 
  of 
  

   Boucliard-Chantereaux, 
  to 
  be 
  a 
  synonym. 
  He 
  takes 
  no 
  note 
  of 
  the 
  

   Biitish 
  shell. 
  

  

  Bourguignat's 
  Helix 
  ptilota 
  [Malac. 
  Bretagne, 
  1860, 
  p. 
  55, 
  pi. 
  i, 
  

   f. 
  5-8), 
  save 
  for 
  its 
  black 
  apex, 
  agrees 
  closely 
  with 
  the 
  British 
  form, 
  

   of 
  which 
  it 
  is 
  in 
  all 
  probability 
  onlj- 
  a 
  local 
  variation. 
  

  

  Servain 
  in 
  1880 
  [Etudes 
  Moll. 
  Espagne 
  Sf 
  Port.) 
  added 
  (p. 
  54) 
  

   //. 
  mJmurina 
  and 
  (p. 
  56) 
  the 
  new 
  var. 
  martigenopsis 
  of 
  revelata, 
  while 
  

   Looard 
  in 
  1882 
  {Prod. 
  Malac. 
  Franc., 
  i, 
  pp. 
  316-317) 
  published 
  

   Bourguignat's 
  manuscript 
  names, 
  II. 
  venetorum 
  and 
  II. 
  villida. 
  

  

  Silva 
  e 
  Castro 
  in 
  1887 
  [Jorn. 
  Acad. 
  R. 
  Sci. 
  Lisbon, 
  xi,pp. 
  232-237) 
  

   increased 
  the 
  number 
  of 
  the 
  group 
  by 
  five 
  : 
  II. 
  nevesiana, 
  II. 
  

   coniinhricensis, 
  H. 
  platylasia, 
  Bourg, 
  MS., 
  II. 
  rosai, 
  and 
  II. 
  aporifia. 
  

   These 
  were 
  summarized 
  and 
  //. 
  atachypora, 
  Bourg. 
  MS., 
  added 
  by 
  

   Locard 
  in 
  his 
  " 
  Conchyliologie 
  Portugaise 
  " 
  [Arch. 
  Mas. 
  Lyon, 
  vii, 
  

   mem. 
  1, 
  1899). 
  No 
  grouping 
  is, 
  howevei', 
  attempted 
  in 
  these 
  papers. 
  

  

  AVesterlund 
  {Fcmna 
  Paldarct. 
  liegion 
  Binnenconch., 
  Helix, 
  p. 
  61, 
  

   1889) 
  seems 
  to 
  have 
  placed 
  most 
  of 
  these 
  forms 
  together 
  under 
  

   revelata, 
  Fer., 
  while 
  at 
  the 
  same 
  time 
  he 
  detected 
  and 
  named 
  H. 
  

   montivaga 
  out 
  of 
  a 
  gathering 
  of 
  //. 
  ponentina 
  sent 
  him 
  by 
  Morelet. 
  

  

  Pilsbry 
  (Manual, 
  ser. 
  ii, 
  vol. 
  ix, 
  p. 
  274, 
  1895) 
  recognizes 
  the 
  

   revelata 
  of 
  Ferussac, 
  including 
  the 
  British 
  shell, 
  with 
  ponentina, 
  

   Dup., 
  and 
  martigena, 
  Fer. 
  (which 
  is 
  a 
  nomen 
  muluni), 
  as 
  synonyms, 
  

   and 
  associates 
  with 
  it 
  conimbricensis, 
  Silv., 
  venetorum, 
  Bgt., 
  nevesiatia, 
  

   Silv., 
  villula, 
  Bgt., 
  platylasia, 
  Bgt., 
  whilst 
  as 
  a 
  variety 
  he 
  places 
  

   occidentalis, 
  Recluz, 
  with 
  its 
  synonym 
  Ushonensis, 
  Pfr. 
  Bourguignat's 
  

   R. 
  ptylota 
  [_sic'] 
  lie 
  treats 
  as 
  a 
  distinct 
  species. 
  The 
  other 
  named 
  

   forms 
  appear 
  to 
  have 
  been 
  passed 
  over 
  by 
  him. 
  

  

  Germain 
  {Moll. 
  France, 
  ii, 
  1913, 
  p. 
  128) 
  also 
  accepts 
  Fernssac's 
  

   //. 
  revelata, 
  with 
  R. 
  venetorum, 
  Bgt., 
  and 
  II. 
  villula, 
  Bgt., 
  as 
  synonyms, 
  

   lie 
  regards 
  (p. 
  129) 
  II. 
  ptilota, 
  Bgt., 
  as 
  a 
  separate 
  species, 
  and 
  makes 
  

   no 
  allusion 
  to 
  Morelet's 
  shell, 
  nor 
  to 
  the 
  British 
  form. 
  

  

  In 
  the 
  absence 
  of 
  authenticated 
  specimens 
  and 
  adequate 
  descriptions 
  

  

  