﻿456 
  Lt. 
  -Colonel 
  H. 
  H. 
  Godwin-Austen 
  on 
  

  

  phore 
  was 
  present 
  in 
  the 
  spermatheca 
  and 
  is 
  similar 
  in 
  

   form 
  of 
  its 
  spines 
  to 
  No. 
  3379 
  ; 
  it 
  is 
  not 
  quite 
  perfect. 
  

   At 
  the 
  junction 
  with 
  capsule 
  the 
  flume 
  has 
  four 
  spines 
  on 
  

   one 
  side, 
  followed 
  by 
  fourteen 
  on 
  the 
  other, 
  which 
  is 
  not 
  

   the 
  complete 
  number 
  — 
  this 
  portion 
  and 
  the 
  flagellate 
  end 
  

   being 
  broken 
  off. 
  

  

  Kerkophorus 
  ? 
  nataiensis, 
  Kr. 
  

  

  Shell 
  very 
  globose, 
  not 
  fully 
  grown. 
  Very 
  microscopic 
  

   longitudinal 
  striation. 
  

  

  Locality. 
  Equeefa 
  (3387, 
  No. 
  12, 
  H.C.Burnup, 
  B.M., 
  spirit- 
  

   specimen 
  no. 
  8). 
  

  

  Mr. 
  Burnup 
  says 
  of 
  this 
  species 
  : 
  " 
  These, 
  of 
  course, 
  

   come 
  very 
  near 
  to 
  No. 
  13, 
  but 
  there 
  being 
  two 
  specimens 
  

   exactly 
  agreeing 
  with 
  each 
  other 
  in 
  form 
  and 
  colour, 
  and 
  

   slightly 
  disagreeing 
  in 
  both 
  these 
  respects 
  with 
  No. 
  13. 
  

   ] 
  have 
  kept 
  them 
  separate 
  until 
  you 
  decide 
  if 
  they 
  all 
  three 
  

   belong 
  to 
  one 
  species. 
  It 
  is 
  only 
  by 
  such 
  means 
  that 
  we 
  

   shall 
  be 
  able 
  to 
  learn 
  the 
  limitations 
  of 
  each 
  species.'' 
  

  

  No. 
  13 
  is 
  dark 
  grey 
  on 
  the 
  foot, 
  and 
  is 
  the 
  same 
  species 
  

   evidently 
  as 
  No. 
  12, 
  the 
  spotting 
  on 
  the 
  visceral 
  sac 
  is 
  of 
  the 
  

   same 
  character. 
  

  

  The 
  animal 
  is 
  dark-coloured 
  on 
  the 
  foot, 
  also 
  on 
  head 
  and 
  

   neck, 
  and 
  the 
  eye-tentacles 
  internally. 
  The 
  overhanging 
  

   lobe 
  at 
  extremity 
  of 
  the 
  foot 
  long 
  and 
  finely 
  pointed. 
  The 
  

   right 
  shell-lobe 
  is 
  very 
  long 
  and 
  narrow, 
  the 
  left 
  shell-lobe 
  

   also 
  narrow 
  and 
  long, 
  triangular 
  on 
  a 
  broad 
  base. 
  The 
  left 
  

   dorsal 
  lobe 
  is 
  in 
  two 
  separate 
  parts. 
  The 
  visceral, 
  sac 
  next 
  

   the 
  mantle-edge 
  plain, 
  with 
  a 
  few 
  scattered 
  small 
  white 
  dots, 
  

   tfiese 
  are 
  more 
  numerous 
  on 
  the 
  line 
  of 
  the 
  rectum. 
  Mingled 
  

   with 
  them 
  is 
  a 
  larger 
  speckling 
  of 
  black, 
  and 
  a 
  mottled 
  dark 
  

   band 
  borders 
  the 
  kidney 
  ; 
  the 
  rest 
  of 
  the 
  visceral 
  sac 
  is 
  black- 
  

   brown, 
  spotted 
  very 
  sparsely 
  and 
  minutely 
  with 
  white. 
  In 
  

   another 
  specimen 
  tlie 
  white 
  spots 
  were 
  absent. 
  

  

  The 
  radula 
  (PI. 
  XX. 
  fig. 
  2 
  c) 
  is 
  arranged 
  thus 
  : 
  — 
  

  

  68 
  . 
  3 
  . 
  9 
  . 
  1 
  . 
  9 
  . 
  3 
  . 
  68, 
  or 
  80 
  . 
  1 
  . 
  80. 
  

  

  The 
  marginals 
  are 
  nearly 
  evenly 
  bicuspid, 
  becoming 
  very 
  

   small 
  on 
  the 
  extreme 
  margin. 
  The 
  jaw 
  (PI. 
  XX. 
  fig. 
  2 
  c) 
  

   is 
  arched 
  high 
  in 
  the 
  centre, 
  and 
  has 
  a 
  small 
  central 
  pro- 
  

   jection 
  on 
  a 
  rather 
  straight 
  edge. 
  

  

  I 
  show 
  tlie 
  generative 
  organs 
  (PI. 
  XX. 
  fig. 
  2) 
  with 
  the 
  

   penis 
  rolled 
  together, 
  as 
  in 
  Part 
  II., 
  pi. 
  xiii. 
  fig. 
  7 
  of 
  

   F. 
  phcedimus, 
  with 
  the 
  end 
  of 
  the 
  flagelium 
  encircling 
  the 
  

   accessory 
  gland 
  — 
  unrolled 
  it 
  is 
  like 
  that 
  species. 
  The 
  

  

  