﻿new 
  Shells 
  from 
  British 
  East 
  Africa. 
  -1Q5 
  

  

  Alt. 
  1075, 
  diam. 
  maj. 
  55 
  mm. 
  

   Aperture: 
  alt. 
  2"5, 
  diam. 
  2 
  mm. 
  

  

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

   British 
  East 
  Africa. 
  

  

  Ennea 
  pilula, 
  sp. 
  n. 
  (Fig. 
  5.) 
  

  

  Shell 
  ovate, 
  imperforate, 
  solid, 
  yellowish 
  white, 
  slightly 
  

   polished 
  ; 
  whorls 
  7^, 
  the 
  apical 
  whorls 
  exserted, 
  smooth, 
  the 
  

   third, 
  fourth, 
  and 
  fifth 
  gradually 
  increasing, 
  the 
  sixth 
  and 
  

   seventh 
  flat 
  and 
  about 
  of 
  the 
  same 
  breadth, 
  all 
  the 
  later 
  

   whorls 
  from 
  the 
  beginning 
  of 
  the 
  third 
  onward 
  sculptured 
  

   with 
  transverse 
  arcuate 
  stria?, 
  which 
  become 
  obsolete 
  on 
  the 
  

   middle 
  and 
  lower 
  portions 
  of 
  the 
  last 
  whorl, 
  the 
  last 
  whorl 
  

   tri-strangulate 
  behind 
  the 
  labrum 
  ; 
  suture 
  linear 
  ; 
  umbilical 
  

   area 
  presenting 
  a 
  shallow 
  elongate 
  depression 
  ; 
  columella 
  

   almost 
  vertically 
  descending 
  ; 
  labrum 
  white, 
  thickened, 
  

   broadly 
  expanded, 
  reflexed, 
  a 
  coarse 
  white 
  parietal 
  callus 
  

   joining 
  the 
  margins; 
  aperture 
  roughly 
  quadrilateral, 
  armed 
  

   with 
  a 
  coarse, 
  broad, 
  bifid, 
  reflexed, 
  subparietal 
  lamella, 
  

   below 
  which 
  occur 
  on 
  the 
  inner 
  margin 
  of 
  the 
  outer 
  lip 
  three 
  

   plaits, 
  the 
  upper 
  of 
  which 
  forms 
  a 
  canal 
  with 
  the 
  subparietal 
  

   lamella 
  ; 
  below 
  these 
  and 
  at 
  the 
  base 
  of 
  the 
  aperture 
  occurs 
  

   a 
  fourth 
  plait, 
  and 
  above 
  this 
  on 
  the 
  columella 
  are 
  situate 
  

   three 
  more 
  plaits, 
  of 
  which 
  the 
  middle 
  one 
  is 
  the 
  strongest, 
  

   and 
  again 
  above 
  these 
  two 
  denticles. 
  

  

  Alt. 
  11*25, 
  diam. 
  maj. 
  6*5 
  mm. 
  

  

  Aperture: 
  alt. 
  2*5, 
  diam. 
  1'75 
  mm. 
  

  

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

   British 
  East 
  Africa. 
  

  

  Ennea 
  pretiosa, 
  sp. 
  n. 
  (Fig. 
  6.) 
  

  

  Shell 
  ovate, 
  rimate, 
  thin, 
  whitish 
  when 
  in 
  dead 
  condition 
  ; 
  

   whorls 
  7, 
  the 
  first 
  four 
  rapidly 
  increasing, 
  the 
  sixth 
  the 
  

   largest, 
  apical 
  whorl 
  smooth, 
  the 
  remainder 
  sculptured 
  with 
  

   distant, 
  thin, 
  erect, 
  transverse 
  costula?, 
  between 
  which 
  occur 
  

   coarse 
  transverse 
  stria? 
  ; 
  suture 
  rather 
  deeply 
  impressed 
  ; 
  

   umbilicus 
  wide 
  above, 
  suddenly 
  becoming 
  very 
  narrow 
  and 
  

   deep 
  below 
  ; 
  labrum 
  almost 
  continuous, 
  white, 
  expanded, 
  

   reflexed, 
  folded 
  above, 
  and 
  turned 
  downwards 
  into 
  a 
  strong, 
  

   parietal, 
  obtusely 
  angular 
  lamella, 
  bearing 
  a 
  nodule 
  on 
  either 
  

   side 
  of 
  the 
  angle 
  ; 
  aperture 
  irregularly 
  ovate, 
  armed 
  with 
  a 
  

   short, 
  lamelliform 
  tubercle 
  on 
  the 
  outer 
  lip; 
  a 
  broad, 
  basal 
  

   denticle, 
  above 
  which 
  occur 
  two 
  denticles, 
  on 
  the 
  columella, 
  

   of 
  which 
  the 
  low.er 
  is 
  the 
  larger. 
  

  

  Ann. 
  & 
  Mag. 
  N. 
  Hist. 
  Ser. 
  8. 
  Vol. 
  vii. 
  31 
  

  

  