﻿269 
  

  

  NOTE 
  ON 
  SOME 
  PREOCCUPIED 
  MOLLUSCAN 
  GENERIC 
  NAMES 
  AND 
  

   PROPOSED 
  NEW 
  GENERA 
  OF 
  THE 
  FAMILY 
  ZONITID^. 
  

  

  By 
  G. 
  K. 
  GuDE, 
  F.Z.S. 
  

  

  Bead 
  IBth 
  January, 
  1911. 
  

  

  "When 
  Professor 
  Pilsbry 
  in 
  1894 
  published 
  his 
  classification 
  of 
  

   the 
  Helicidte 
  — 
  which, 
  with 
  its 
  masterly 
  gi-asp 
  of 
  detail, 
  in 
  many 
  

   instances 
  revolutionized 
  our 
  previous 
  conception 
  of 
  the 
  inter-relations 
  

   of 
  this 
  enormous 
  group 
  of 
  land 
  shells 
  — 
  many 
  malacologists 
  were 
  led 
  to 
  

   hope 
  that 
  the 
  remaining 
  Helicoids 
  would 
  in 
  due 
  course 
  receive 
  

   similar 
  treatment 
  from 
  his 
  able 
  pen. 
  These 
  hopes, 
  however, 
  have 
  

   not 
  been 
  realized, 
  and 
  a 
  satisfactory 
  systematic 
  arrangement 
  of 
  this 
  

   numerous 
  group 
  as 
  yet 
  remains 
  a 
  desideratum. 
  

  

  The 
  classification 
  of 
  these 
  molluscs 
  adopted 
  in 
  PfeifFer's 
  Nomenclator 
  

   is 
  in 
  many 
  cases, 
  of 
  necessity, 
  somewhat 
  antiquated, 
  while 
  the 
  

   arrangement 
  of 
  the 
  Naninidse 
  by 
  Dr. 
  G. 
  Pfeffer 
  ' 
  does 
  not 
  appear 
  to 
  

   have 
  met 
  with 
  much 
  approval. 
  An 
  important 
  step 
  in 
  the 
  right 
  

   direction 
  was 
  made 
  by 
  the 
  late 
  W. 
  T. 
  Blanford, 
  with 
  the 
  co-operation 
  

   of 
  Lieut. 
  -Colonel 
  Godwin-Austen, 
  in 
  the 
  first 
  volume 
  of 
  the 
  Mollusca 
  

   of 
  The 
  Fauna 
  of 
  India, 
  and 
  by 
  the 
  latter 
  in 
  The 
  Mollusca 
  of 
  India. 
  

   This, 
  however, 
  covers 
  but 
  a 
  comparatively 
  small 
  portion 
  of 
  the 
  whole 
  

   field, 
  and 
  much 
  remains 
  to 
  be 
  done. 
  

  

  In 
  attempting 
  a 
  workable 
  scheme 
  of 
  classification 
  of 
  the 
  Helicoids, 
  

   other 
  than 
  the 
  Helicidae 
  proper, 
  I 
  do 
  not 
  profess 
  to 
  fill 
  this 
  lacuna. 
  

   The 
  arrangement 
  which 
  I 
  hope 
  shortly 
  to 
  present 
  for 
  publication 
  will 
  

   simply 
  be 
  a 
  preliminary 
  synopsis, 
  and 
  will 
  be 
  based 
  mainly 
  on 
  

   conchological 
  and 
  geographical 
  data. 
  

  

  In 
  the 
  course 
  of 
  my 
  search 
  through 
  literature 
  in 
  this 
  connexion 
  

   several 
  generic 
  or 
  sectional 
  names 
  were 
  found 
  to 
  be 
  preoccupied 
  in 
  

   other 
  branches 
  of 
  zoology, 
  and 
  new 
  names 
  are 
  now 
  proposed 
  in 
  lieu 
  of 
  

   these. 
  Although 
  two 
  of 
  the 
  genera 
  in 
  question 
  do 
  not 
  strictly 
  come 
  

   within 
  the 
  scope 
  of 
  the 
  present 
  paper, 
  pertaining 
  as 
  they 
  do 
  to 
  the 
  

   family 
  Helicidae, 
  it 
  has 
  been 
  considered 
  expedient 
  to 
  include 
  them 
  

   here. 
  A 
  number 
  of 
  species, 
  hitherto 
  assigned 
  to 
  various 
  genera 
  from 
  

   time 
  to 
  time 
  by 
  different 
  authors, 
  were 
  considered 
  sufficiently 
  distinct 
  

   from 
  their 
  whilom 
  congeners 
  to 
  warrant 
  the 
  creation 
  of 
  new 
  genera 
  

   for 
  their 
  reception, 
  and 
  the 
  names 
  for 
  these 
  are 
  also 
  appended. 
  

  

  To 
  Mr. 
  J. 
  H. 
  Ponsonby, 
  whose 
  unrivalled 
  knowledge 
  of 
  the 
  

   Helicoids 
  is 
  always 
  so 
  ungrudgingly 
  placed 
  at 
  my 
  service, 
  I 
  am 
  

   indebted 
  on 
  this, 
  as 
  on 
  so 
  many 
  previous 
  occasions, 
  for 
  many 
  valuable 
  

   hints 
  and 
  suggestions. 
  

  

  Zopuos,- 
  n,n. 
  

  

  In 
  the 
  year 
  1860 
  no 
  less 
  than 
  three 
  genera 
  were 
  named 
  after 
  the 
  

   celebrated 
  Danish 
  conchologist 
  Morch. 
  Arthur 
  Adams 
  proposed 
  

   Morchia 
  for 
  marine 
  shells 
  in 
  the 
  Amials 
  and 
  Magazine 
  of 
  Natural 
  

  

  ■• 
  Abh. 
  Naturw. 
  Ver. 
  Hamburg- 
  Altona, 
  vol. 
  vii, 
  Abt. 
  ii, 
  p. 
  1, 
  1883. 
  

   - 
  ^6(pos, 
  darkness. 
  

  

  