﻿462 
  Lt.-Colonel 
  H. 
  H. 
  Godwin-Austen 
  07i 
  

  

  Kerkophorus 
  tongaatensis, 
  sp. 
  n. 
  

  

  Locality. 
  Tongaat 
  {H. 
  C. 
  Bunnij)), 
  January 
  1909. 
  

  

  Shell 
  very 
  narrowly 
  perforate, 
  globosely 
  conoid 
  ; 
  sculpture 
  

   very 
  fine, 
  but 
  distinct 
  longitudinal 
  striation, 
  finer 
  towards 
  

   the 
  last 
  whorl 
  : 
  colour 
  rich 
  sienna-brown, 
  decidedly 
  darker 
  

   above 
  than 
  below, 
  the 
  dividing-line 
  being 
  the 
  sutural 
  band 
  ; 
  

   spire, 
  apex 
  bluntly 
  conic 
  ; 
  suture 
  impressed 
  ; 
  whorls 
  4, 
  

   apical 
  small, 
  the 
  last 
  very 
  ample, 
  a 
  faint 
  narrow 
  sutural 
  

   band 
  just 
  above 
  the 
  periphery 
  ; 
  aperture 
  ovately 
  lunate, 
  

   decidedly 
  oblique 
  ; 
  peristome 
  thin, 
  a 
  slight 
  callus 
  on 
  inner 
  

   side 
  ; 
  cohimellar 
  margin 
  just 
  slightly 
  reflected 
  at 
  perforation, 
  

   nearly 
  vertical, 
  then 
  oblique. 
  

  

  Size: 
  major 
  diam. 
  14*75, 
  minor 
  12*5 
  ; 
  alt. 
  axis 
  6"25 
  mm. 
  

  

  A 
  smaller 
  shell 
  of 
  animal 
  dissected 
  was 
  12*0 
  mm. 
  in 
  major 
  

   diameter, 
  but 
  agrees 
  in 
  every 
  way 
  with 
  tlie 
  type 
  above 
  

   described, 
  and 
  was 
  from 
  the 
  same 
  locality. 
  

  

  Animal. 
  — 
  With 
  a 
  greenish 
  tint, 
  on 
  the 
  extremity 
  of 
  the 
  

   foot 
  darkish 
  grey, 
  in 
  all 
  the 
  specimens 
  received. 
  The 
  right 
  

   shell-lobe 
  is 
  broad 
  and 
  large, 
  as 
  in 
  K. 
  phmlimus 
  (pi. 
  xiii. 
  

   fig. 
  2); 
  the 
  left 
  shell-lobe, 
  however, 
  is 
  not 
  broad 
  and 
  square 
  

   as 
  in 
  that 
  species, 
  but 
  broad 
  and 
  very 
  elongated 
  ; 
  left 
  dorsal 
  

   lobe 
  in 
  two 
  parts, 
  the 
  posterior 
  the 
  smallest; 
  lobe 
  above 
  

   the 
  mucous 
  pore 
  similarly 
  elongate 
  (pi. 
  xiii. 
  fig. 
  3). 
  

   Colour 
  brown 
  throughout, 
  dark 
  grey 
  on 
  hinder 
  part 
  of 
  foot, 
  

   a 
  few 
  black 
  specks 
  near 
  the 
  mantle-edge, 
  and 
  a 
  black 
  bar 
  

   above 
  the 
  kidney. 
  Shell-loi)es 
  are 
  far 
  smaller 
  than 
  in 
  

   K. 
  melvilli. 
  The 
  radula 
  formula 
  is 
  

  

  H-36 
  . 
  2 
  . 
  13 
  . 
  1 
  . 
  13 
  . 
  2 
  . 
  36 
  + 
  . 
  

   The 
  marginal 
  teeth 
  not 
  quite 
  complete, 
  similar 
  to 
  that 
  of 
  

   K. 
  melvilli 
  (pi. 
  vii. 
  figs. 
  \b-d). 
  Tlie 
  two 
  transition-teeth 
  

   have 
  the 
  outer 
  cusp 
  higher 
  than 
  in 
  the 
  preceding 
  tooth 
  ; 
  in 
  

   the 
  next 
  outer 
  tooth 
  the 
  cusp 
  is 
  still 
  nearer 
  the 
  point, 
  and 
  

   thence 
  up 
  to 
  the 
  margin 
  it 
  is 
  not 
  seen 
  at 
  all, 
  all 
  being 
  curved 
  

   and 
  aculeate 
  in 
  shape, 
  becoming 
  small 
  and 
  narrower 
  next 
  the 
  

   margin, 
  and 
  a 
  few 
  here 
  show 
  a 
  bicuspid 
  point. 
  

  

  Jaw 
  with 
  a 
  central 
  projection. 
  

  

  In 
  the 
  genitalia 
  the 
  shaft 
  of 
  the 
  penis 
  is 
  short 
  and 
  thick- 
  

   ened, 
  with 
  tlie 
  S 
  folds 
  bound 
  together 
  and 
  concealed. 
  

  

  In 
  the 
  specimen 
  dissected 
  out 
  of 
  the 
  smallest 
  shell 
  men- 
  

   tioned 
  above, 
  only 
  the 
  remains 
  of 
  a 
  spermatophore 
  were 
  

   found 
  in 
  the 
  spermatheca. 
  In 
  another 
  specimen 
  I 
  was 
  

   fortunate 
  enough 
  to 
  find 
  one 
  quite 
  perfect. 
  The 
  flume 
  next 
  

   the 
  capsule 
  has 
  8 
  main 
  spines, 
  while 
  on 
  the 
  other 
  side 
  in 
  a 
  

   continuous 
  row 
  there 
  are 
  25, 
  wdiich 
  I 
  render 
  by 
  ^s 
  ; 
  it 
  ter- 
  

  

  