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  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  from 
  the 
  Malay 
  Archipelago. 
  In 
  order 
  to 
  signalize 
  this 
  fact, 
  without 
  

   inferring 
  actual 
  relationship, 
  I 
  suggest 
  the 
  above 
  name 
  for 
  this 
  group. 
  

  

  Allogenes,' 
  n.g. 
  

  

  Shell 
  planorhiform, 
  vitreous, 
  shining 
  ; 
  spire 
  immersed, 
  periphery 
  

   keeled 
  or 
  angulated, 
  the 
  keel 
  or 
  angulation 
  entering 
  the 
  median 
  

   region 
  of 
  the 
  aperture. 
  

  

  Type: 
  Vitrea 
  prodigiosa, 
  Ancey, 
  from 
  Djurdjura, 
  Algeria. 
  

  

  The 
  species 
  on 
  which 
  I 
  base 
  this 
  new 
  genus 
  is 
  so 
  peculiar 
  that 
  it 
  

   was 
  compared 
  by 
  Ancey 
  to 
  Happia 
  ammoniformis 
  and 
  H. 
  vitrina 
  from 
  

   South 
  America. 
  It 
  also 
  bears 
  some 
  superficial 
  resemblance 
  to 
  

   Gtiestieria 
  Powisiana 
  from 
  New 
  Grenada. 
  Vitrea 
  tsserica, 
  Let., 
  and 
  

   V. 
  djurdjurensis, 
  Deb., 
  are 
  congeneric 
  with 
  it. 
  

  

  Drouetia, 
  n.g. 
  

  

  Shell 
  hyaline, 
  very 
  finely 
  striated, 
  and 
  covered 
  with 
  excessively 
  

   fine 
  spirals, 
  imperforate, 
  the 
  reflexed 
  columella 
  slightly 
  twisted. 
  

  

  Type: 
  Helix 
  atlantica, 
  Mor. 
  & 
  Dr., 
  from 
  the 
  Azores. 
  

  

  A 
  raonotypic 
  genus 
  named 
  in 
  honour 
  of 
  the 
  late 
  Mons. 
  Henri 
  

   Drouet, 
  a 
  noted 
  French 
  malacologist, 
  who 
  described 
  several 
  mollusca 
  

   from 
  these 
  islands. 
  

  

  Hawaiia, 
  n.g. 
  

  

  Shell 
  zonitoid, 
  vitreous, 
  finely 
  and 
  regularly 
  costulate, 
  openly 
  

   umbilicated. 
  

  

  Hyalinia 
  and 
  Pseudohyalinia, 
  auct. 
  (in 
  part). 
  

   Type: 
  Helix 
  Kawaieyisis, 
  Pfr. 
  

   Confined 
  to 
  the 
  Sandwich 
  Islands. 
  

  

  PSICHION,* 
  n.g. 
  

  

  Shell 
  turbinate, 
  finely 
  striated 
  transversely, 
  and 
  with 
  microscopic 
  

   close 
  spirals. 
  Umbilicus 
  perforate, 
  partly 
  covered 
  by 
  the 
  columellar 
  

   margin 
  of 
  the 
  peristome. 
  

  

  Type: 
  Helix 
  miliar 
  is, 
  Morel., 
  from 
  the 
  Comoro 
  Islands. 
  

  

  Thapsiella, 
  n.g. 
  

  

  Shell 
  zonitoid, 
  shining, 
  narrowly 
  perforate, 
  finely 
  striated 
  trans- 
  

   versely, 
  and 
  covered 
  with 
  dense 
  microscopic 
  spirals, 
  narrowly 
  

   perforated, 
  the 
  umbilicus 
  partly 
  covered 
  by 
  the 
  columellar 
  margin 
  

   of 
  the 
  peristome. 
  

  

  Thapsia, 
  auct. 
  (in 
  part). 
  

  

  Type 
  : 
  Thapsia 
  Masuhmisis, 
  Smith, 
  from 
  Central 
  Africa. 
  

  

  Differs 
  from 
  Thapsia, 
  the 
  type 
  of 
  which 
  is 
  H. 
  troglodytes, 
  Morelet, 
  

   in 
  the 
  sculpture, 
  which 
  is 
  devoid 
  of 
  the 
  decussation 
  characterizing 
  

   that 
  genus. 
  The 
  species 
  are 
  nearly 
  all 
  small, 
  and 
  range 
  over 
  Central 
  

   Africa 
  and 
  the 
  east 
  coast, 
  whereas 
  Thapsia 
  is 
  found 
  on 
  the 
  west 
  

   coast 
  and 
  its 
  islands. 
  

  

  aWoyevris, 
  a 
  stranger. 
  ^ 
  ^''X'"") 
  ^ 
  fragment. 
  

  

  