﻿new 
  Shells 
  from 
  British 
  East 
  Africa. 
  473 
  

  

  whorls 
  4^, 
  the 
  first 
  three 
  and 
  a 
  half 
  regularly 
  increasing, 
  the 
  

   last 
  large, 
  the 
  apical 
  whorls 
  smooth, 
  the 
  later 
  whorls 
  beauti- 
  

   fully 
  sculptured 
  with 
  fine, 
  glassy, 
  regularly 
  distant, 
  arcuate 
  

   costulae 
  ; 
  suture 
  well 
  impressed 
  ; 
  columella 
  almost 
  vertically 
  

   descending, 
  stained 
  with 
  pale 
  reddish 
  chestnut, 
  a 
  moderately 
  

   thick 
  well-defined 
  parietal 
  callus 
  joining 
  it 
  with 
  the 
  lip 
  above; 
  

   labi'um 
  simple, 
  acute, 
  receding 
  above 
  and 
  below 
  ; 
  aperture 
  

   elongately 
  inversely 
  auriform. 
  

  

  Alt. 
  6'5, 
  diam. 
  maj. 
  3"5 
  mm. 
  

  

  Aperture: 
  alt. 
  3*5, 
  diam. 
  1'75 
  mm. 
  

  

  Bab. 
  Mount 
  Kenia, 
  at 
  an 
  altitude 
  of 
  9000-10,000 
  feet, 
  

   British 
  East 
  Africa. 
  

  

  Kenia, 
  subgen. 
  no 
  v. 
  

  

  Shell 
  subulate, 
  transversely 
  striate, 
  with 
  oblique 
  truncate 
  

   columella, 
  the 
  later 
  whorls, 
  and 
  especially 
  the 
  last, 
  much 
  

   elongated 
  ; 
  aperture 
  receding 
  at 
  base. 
  

  

  Type 
  of 
  subgenus, 
  Kenia 
  suturalis. 
  

  

  Kenia 
  suturalis, 
  sp. 
  n. 
  (Fig. 
  28.) 
  

  

  Shell 
  subulate, 
  thin, 
  semitransparent, 
  polished, 
  shining, 
  

   yellowish 
  olive 
  ; 
  whorls 
  7, 
  the 
  last 
  two 
  flattish 
  and 
  more 
  

   elongate 
  in 
  proportion 
  to 
  the 
  remainder, 
  the 
  upper 
  whorls 
  

   sculptured 
  with 
  oblique 
  transverse 
  strise, 
  which 
  become 
  less 
  

   marked 
  on 
  the 
  later 
  whorls 
  ; 
  suture 
  impressed, 
  ornamented 
  

   with 
  a 
  narrow, 
  cream-coloured, 
  sublateral, 
  marginal 
  band 
  on 
  

   which 
  the 
  terminations 
  of 
  the 
  transverse 
  stride 
  are 
  very 
  

   apparent 
  ; 
  columella 
  descending 
  in 
  a 
  very 
  pronounced 
  curve, 
  

   obliquely 
  truncate 
  below, 
  diffused 
  outwards 
  and 
  above 
  into 
  a 
  

   thin 
  whitish 
  callus 
  which 
  reaches 
  the 
  upper 
  margin 
  of 
  the 
  

   labrum 
  ; 
  labium 
  simple, 
  acute, 
  receding 
  below 
  ; 
  aperture 
  

   inversely 
  auriform. 
  

  

  Alt. 
  29*5, 
  diam. 
  maj. 
  8*5, 
  diam. 
  min. 
  8 
  mm. 
  

  

  Aperture 
  : 
  alt. 
  8*5, 
  diam. 
  4*5 
  mm. 
  

  

  Bab. 
  Mount 
  Kenia, 
  at 
  an 
  altitude 
  of 
  9000-10,000 
  feet, 
  

   British 
  East 
  Africa. 
  

  

  Subulina 
  dohertgi 
  *, 
  Smith, 
  from 
  Uganda, 
  specimens 
  of 
  

   which 
  also 
  occurred 
  on 
  Mount 
  Kenia 
  at 
  from 
  6000-8000 
  feet, 
  

   may 
  perhaps 
  also 
  be 
  included 
  in 
  the 
  present 
  subgenus. 
  

  

  Kenia 
  iredalei, 
  sp. 
  n. 
  (Fig. 
  29.) 
  

   Shell 
  subulate, 
  whitish, 
  covered 
  with 
  a 
  golden-brown 
  

   * 
  J. 
  Conch, 
  x. 
  p. 
  319. 
  

  

  