﻿South- 
  African 
  Land- 
  Mollusca. 
  455 
  

  

  Shell 
  very 
  minutely 
  perforate, 
  globosely 
  conoid, 
  shiny 
  ; 
  

   sculpture 
  quite 
  smooth 
  to 
  the 
  eye, 
  highly 
  magnified 
  there 
  is 
  

   close, 
  very 
  fine, 
  longitudinal 
  striation 
  ; 
  colour 
  ochraceous, 
  

   with 
  an 
  orange 
  tinge, 
  a 
  fairly 
  broad 
  band 
  just 
  above 
  the 
  

   periphery; 
  spire 
  rather 
  depressedly 
  conic, 
  apex 
  blunt; 
  

   suture 
  impressed 
  ; 
  whorls 
  4, 
  at 
  first 
  regularly 
  increasing, 
  

   the 
  last 
  more 
  rapidly 
  ; 
  aperture 
  broadly 
  lunate, 
  oblique 
  ; 
  

   })eristome 
  thin 
  ; 
  columellar 
  margin 
  very 
  feeble, 
  and 
  with 
  a 
  

   mere 
  indication 
  of 
  refiexion. 
  

  

  Size 
  : 
  major 
  diameter 
  14"5, 
  minor 
  13'0; 
  alt. 
  axis 
  8 
  mm. 
  

  

  Animal. 
  — 
  Lobe 
  at 
  extremity 
  of 
  the 
  foot 
  very 
  long. 
  Right 
  

   and 
  left 
  shell- 
  lobes 
  very 
  long 
  and 
  narrow, 
  left 
  dorsal 
  lobe 
  in 
  

   two 
  parts. 
  Visceral 
  sac 
  very 
  dark 
  umber-brown 
  from 
  the 
  

   kidney 
  to 
  the 
  apex. 
  Kidney 
  a 
  rich 
  brown 
  colour. 
  

  

  Genitalia 
  (pi. 
  xii. 
  fig. 
  1). 
  — 
  In 
  the 
  species 
  the 
  epiphallus 
  

   is 
  extremely 
  siiort, 
  the 
  coecufn 
  is 
  close 
  to 
  the 
  retractor 
  muscle, 
  

   the 
  Hagelium 
  long, 
  the 
  vas 
  deferens 
  junction 
  at 
  its 
  base. 
  

   In 
  the 
  figure 
  the 
  spermatheca 
  is 
  shown 
  broken 
  after 
  the 
  

   spermatophores 
  had 
  been 
  taken 
  out 
  of 
  it. 
  There 
  were 
  two 
  — 
  

   the 
  first 
  instance 
  of 
  my 
  finding 
  more 
  than 
  one 
  in 
  this 
  sub- 
  

   family. 
  One 
  was 
  remarkably 
  perfect 
  (pi. 
  xii. 
  fig. 
  1 
  a), 
  the 
  

   other, 
  the 
  oldest 
  (pi. 
  xii. 
  fig. 
  1 
  b), 
  had 
  lost 
  its 
  spines, 
  only 
  

   their 
  bases 
  remainerl, 
  the 
  flume 
  is 
  whip-like 
  at 
  the 
  end. 
  The 
  

   spines 
  are 
  straight 
  and 
  branched 
  from 
  just 
  above 
  the 
  base, 
  

   all 
  bifid 
  at 
  the 
  several 
  terminations. 
  There 
  are 
  seven 
  on 
  one 
  

   side 
  basal 
  and 
  fifteen 
  on 
  the 
  other 
  (^), 
  the 
  fifteenth 
  is 
  more 
  

   distant 
  from 
  its 
  neighbours 
  and 
  represents 
  the 
  bifurcation 
  

   at 
  the 
  points 
  where 
  the 
  whip-like 
  portion 
  commences 
  {vide 
  

   pi. 
  xii. 
  fig. 
  1 
  b). 
  

  

  Radula. 
  — 
  The 
  formula 
  is 
  52 
  . 
  3 
  . 
  8 
  . 
  1 
  . 
  8 
  . 
  3 
  . 
  5.2, 
  or 
  

   63 
  . 
  1 
  . 
  63. 
  The 
  central 
  teeth 
  are, 
  as 
  usual, 
  rather 
  small, 
  

   the 
  marginals 
  are 
  bicuspid, 
  points 
  nearly 
  even, 
  on 
  the 
  

   extreme 
  margin 
  and 
  about 
  seven 
  or 
  eight 
  from 
  the 
  side 
  — 
  

   among 
  the 
  minute 
  teeth, 
  one 
  here 
  and 
  there 
  is 
  tricuspid. 
  

   Jaw 
  with 
  central 
  projection. 
  

  

  Kerkophorus 
  ? 
  poeppigi, 
  Menke. 
  

  

  Localitij. 
  Thornybush 
  (3411, 
  Burnup, 
  No. 
  16, 
  B.M.). 
  

  

  Animal. 
  — 
  Extremity 
  of 
  foot 
  with 
  elongate 
  lobe 
  tipped 
  

   dark, 
  foot 
  divided, 
  right 
  shell-lobe 
  small 
  and 
  narrow, 
  the 
  

   left 
  quite 
  small. 
  Visceral 
  sac, 
  no 
  markings 
  on 
  wall 
  of 
  

   branchial 
  chamber, 
  a 
  faint 
  band 
  of 
  black 
  above 
  the 
  kidney, 
  and 
  

   same 
  with 
  faint 
  pale 
  mottling 
  towards 
  the 
  apex 
  lohich 
  is 
  

   darker. 
  Pale 
  brown 
  tint 
  throughout. 
  

  

  Generative 
  organs 
  as 
  in 
  other 
  allied 
  species. 
  A 
  spermato- 
  

  

  