﻿THE 
  ANNAL'S 
  

  

  AND 
  

  

  MAGAZINE 
  OF 
  NATIJRAL 
  HISTOEY. 
  

  

  [EIGHTH 
  SERIES.] 
  

   No. 
  77. 
  MAY 
  1914. 
  

  

  LII. 
  — 
  A 
  Revieiv 
  of 
  South- 
  African 
  Land-MolJusca 
  belonging 
  

   to 
  the 
  Family 
  Zonitiche. 
  — 
  Part 
  III.* 
  By 
  Lt.-Colonel 
  H. 
  11. 
  

   Godwin- 
  A.USTEN, 
  F.II.S. 
  &c. 
  

  

  [Plates 
  XIX. 
  & 
  XX.] 
  

  

  The 
  specimens 
  of 
  Vitrina 
  corneus 
  and 
  2yoeppigi 
  alluded 
  to 
  in 
  

   Annals 
  & 
  Mag. 
  Nat. 
  Hist. 
  ser. 
  8, 
  vol. 
  x. 
  p. 
  264^ 
  August 
  

   1912, 
  duly 
  came 
  to 
  hand, 
  after 
  considerable 
  delay, 
  and 
  have 
  

   been 
  compared 
  with 
  the 
  material 
  in 
  this 
  country. 
  Both 
  

   IVlr. 
  John 
  Ponsonby 
  and 
  Major 
  M. 
  Connolly 
  have 
  been 
  

   associated 
  with 
  me 
  in 
  the 
  examination 
  of 
  species. 
  With 
  

   the 
  latter 
  officer 
  I 
  have 
  very 
  recently 
  (IStli 
  December) 
  com- 
  

   pared 
  these 
  typical 
  shells 
  with 
  the 
  species 
  of 
  this 
  South- 
  

   African 
  group 
  in 
  the 
  Natural 
  Histor}'^ 
  Museum. 
  

  

  Those 
  who 
  may 
  study 
  these 
  South-African 
  genera 
  Avill 
  

   soon 
  realize 
  how 
  very 
  similar 
  the 
  shells 
  of 
  the 
  species 
  

   collected 
  and 
  described 
  by 
  the 
  early 
  collectors 
  are 
  in 
  form, 
  

   and 
  how 
  very 
  little 
  there 
  is 
  in 
  shell-character 
  to 
  go 
  upon. 
  

   At 
  that 
  period 
  a 
  description 
  would 
  be 
  framed 
  on 
  several 
  

   examples, 
  the 
  type-shell 
  was 
  seldom 
  singled 
  out. 
  The 
  

   difficulty 
  seemed 
  to 
  me 
  to 
  be 
  greater 
  when 
  specimens, 
  

   collected 
  50 
  to 
  60 
  years 
  ago, 
  were 
  under 
  comparison 
  with 
  

   those 
  collected 
  more 
  recently 
  in 
  or 
  about 
  the 
  same 
  tract 
  of 
  

   country. 
  Changed 
  conditions 
  must 
  be 
  taken 
  into 
  con- 
  

  

  * 
  Part 
  I., 
  with 
  plates 
  i.-vii., 
  was 
  published 
  in 
  the 
  ' 
  Annals 
  ' 
  for 
  

   January 
  1912, 
  pp. 
  122-139 
  ; 
  Part 
  II., 
  with 
  plates 
  xii.-xvii., 
  appeared 
  in 
  

   the 
  ' 
  Annals 
  ' 
  for 
  May 
  1912, 
  pp. 
  569-585. 
  

  

  Ann. 
  t£; 
  Mag. 
  N. 
  Hist. 
  Ser. 
  8. 
  Vol. 
  xiii. 
  31 
  

  

  