﻿472 
  Mr. 
  H. 
  B. 
  Preston 
  on 
  

  

  aperture 
  rather 
  narrowly 
  inversely 
  auriform 
  ; 
  interior 
  of 
  shell 
  

   pale 
  bluish 
  white, 
  polished, 
  nacreous. 
  

  

  Alt. 
  58, 
  diam. 
  maj. 
  27, 
  diam. 
  min. 
  24 
  mm. 
  

  

  Aperture: 
  alt. 
  21, 
  diam. 
  14 
  mm. 
  

  

  Bab. 
  Mount 
  Kenia, 
  at 
  an 
  altitude 
  of 
  6000-8000 
  feet, 
  

   British 
  East 
  Africa. 
  

  

  I 
  am 
  inclined 
  to 
  include 
  in 
  this 
  section 
  Limicolaria 
  dohertyi, 
  

   Smith 
  *, 
  from 
  Uganda, 
  and 
  also 
  Limicolaria 
  keniana, 
  Smith 
  f, 
  

   from 
  Mount 
  Kenia. 
  

  

  Krapfiella, 
  gen. 
  nov. 
  

  

  Shell 
  bulimiform, 
  perforate, 
  with 
  apical 
  whorls 
  large, 
  broad, 
  

   and 
  sculptured 
  with 
  spiral 
  strice, 
  the 
  later 
  whorls 
  marked 
  

   only 
  with 
  transverse 
  wrinkles 
  ; 
  columella 
  not 
  truncate. 
  

  

  TyP 
  e 
  or 
  genus, 
  K. 
  mirabilis. 
  

  

  Krapfiella 
  mirabilis, 
  sp. 
  n. 
  (Figs. 
  25 
  A, 
  25 
  B.) 
  

  

  Shell 
  elongately 
  ovate, 
  rather 
  thin, 
  yellowish 
  brown 
  ; 
  

   whorls 
  h\, 
  the 
  apical 
  whorls 
  closely 
  but 
  coarsely 
  spirally 
  

   striate, 
  the 
  later 
  whorls 
  sculptured 
  with 
  transverse 
  riblets 
  ; 
  

   suture 
  well 
  impressed, 
  somewhat 
  crenellate 
  ; 
  umbilicus 
  

   narrow, 
  deep, 
  partly 
  concealed 
  by 
  the 
  outward 
  expansion 
  of 
  

   the 
  columella 
  ; 
  columella 
  glassy, 
  slightly 
  oblique, 
  outwardly 
  

   expanded; 
  peristome 
  simple; 
  aperture 
  inversely 
  auriform. 
  

  

  Alt. 
  23'5, 
  diam. 
  maj. 
  13, 
  diam. 
  min. 
  11 
  mm. 
  

  

  Aperture 
  : 
  alt. 
  10*25, 
  diam. 
  5'5 
  mm. 
  

  

  Hob. 
  Mount 
  Kenia, 
  at 
  an 
  altitude 
  of 
  6000-8000 
  feet, 
  

   British 
  East 
  Africa. 
  

  

  Homorus 
  eg 
  r 
  eg 
  his 
  y 
  sp. 
  n. 
  (Fig. 
  26.) 
  

  

  Shell 
  subulate, 
  glossy, 
  polished, 
  shining, 
  yellowish 
  olive 
  ; 
  

   whorls 
  11, 
  somewhat 
  convex, 
  marked 
  with 
  transverse 
  growth 
  

   stria? 
  ; 
  suture 
  well 
  impressed, 
  somewhat 
  crenellate; 
  colu- 
  

   mella 
  curved, 
  obliquely 
  truncate 
  below, 
  a 
  light 
  well-defined 
  

   callus 
  extending 
  from 
  it 
  to 
  the 
  margin 
  of 
  the 
  labrum 
  above 
  ; 
  

   labrum 
  simple 
  ; 
  aperture 
  elongately 
  inversely 
  auriform. 
  

  

  Alt. 
  51-75, 
  diam. 
  maj. 
  18, 
  diam. 
  min. 
  11 
  mm. 
  

  

  Aperture 
  : 
  alt. 
  13, 
  diam. 
  5'5 
  mm. 
  

  

  Bab. 
  Mount 
  Kenia, 
  at 
  an 
  altitude 
  of 
  6000-8000 
  feet, 
  

   British 
  East 
  Africa. 
  

  

  Curvella 
  deliciosa, 
  sp. 
  n. 
  (Fig. 
  27.) 
  

   Shell 
  ovately 
  fusiform, 
  thin, 
  vitreous, 
  pale 
  greenish 
  white 
  ; 
  

   * 
  J. 
  Malac. 
  viii. 
  p. 
  95. 
  f 
  J- 
  Conch, 
  x. 
  p. 
  318. 
  

  

  