﻿PRESTON 
  : 
  ON 
  ABYSSINIAN 
  MOLLUSCA. 
  169 
  

  

  devoured 
  lettuce 
  with 
  avidity 
  ; 
  the 
  animal 
  is 
  dorsally 
  of 
  a 
  slaty-black 
  

   colour, 
  shading 
  to 
  dirty 
  greyish 
  yellow 
  on 
  the 
  foot 
  and 
  posterior 
  

   portion 
  of 
  the 
  body 
  ; 
  they 
  are 
  very 
  sluggish 
  in 
  their 
  movements, 
  

   trailing 
  their 
  heavy 
  shells 
  behind 
  them 
  as 
  they 
  crawl 
  ; 
  nearly 
  all 
  the 
  

   shells 
  contained 
  eggs, 
  which 
  were, 
  in 
  a 
  few 
  cases, 
  pushed 
  out 
  as 
  the 
  

   animal 
  emerged. 
  They 
  are 
  large 
  for 
  the 
  size 
  of 
  the 
  animal, 
  very 
  

   white, 
  elongately 
  oval, 
  and 
  calcareous; 
  measuring 
  1*5 
  mm. 
  in 
  length 
  

   by 
  1 
  mm. 
  in 
  breadth. 
  

  

  Itiopiana, 
  n.sect. 
  

  

  Shell 
  differing 
  from 
  Subulina 
  {sensu 
  stricto) 
  in 
  having 
  all 
  but 
  the 
  

   embryonic 
  whorls 
  finely 
  decussately 
  sculptured. 
  

  

  SiTBULiNA 
  (Itiopiana) 
  Meneleki, 
  n.sp. 
  

  

  Shell 
  subulate 
  with 
  sub-mamillary 
  apical 
  whorls, 
  rather 
  thin, 
  pale 
  

   yellowish 
  brown; 
  whorls 
  12^, 
  somewhat 
  flat, 
  the 
  earlier 
  whorls 
  

   minutely 
  pitted, 
  the 
  later 
  whorls 
  indistinctly 
  spirally 
  striate 
  and 
  

   sculptured 
  with 
  fine, 
  very 
  closely 
  set, 
  transverse 
  striae 
  ; 
  sutures 
  

  

  impressed, 
  slightly 
  crenellate 
  ; 
  columella 
  curved 
  and 
  slightly 
  twisted, 
  

   rather 
  abruptly 
  truncate 
  ; 
  labrum 
  thin, 
  acute 
  ; 
  aperture 
  inversely 
  

   auriform. 
  Alt. 
  29'75, 
  diam. 
  maj. 
  6-25 
  mm. 
  ; 
  aperture, 
  alt. 
  6*25, 
  

   diam. 
  3 
  mm. 
  

  

  Subulina 
  (Itiopiana) 
  vicina, 
  n.sp. 
  

  

  Shell 
  subulate 
  with 
  sub-mamillary 
  apical 
  whorls, 
  rather 
  thin, 
  pale 
  

   waxy 
  yellow 
  ; 
  whorls 
  12, 
  moderately 
  convex, 
  the 
  first 
  two 
  and 
  a 
  half 
  

   smooth, 
  shining, 
  the 
  later 
  whorls 
  finely, 
  spirally 
  striate, 
  and 
  sculptured 
  

   with 
  fine, 
  very 
  closely 
  set, 
  transverse 
  striae, 
  giving 
  to 
  the 
  shell 
  

   a 
  minutely 
  decussate 
  appearance 
  ; 
  sutures 
  impressed, 
  scarcely 
  

   crenellate 
  ; 
  columella 
  somewhat 
  obliquely 
  curved, 
  obliquely 
  truncate 
  

   below, 
  and 
  diffused 
  above 
  into 
  a 
  thin, 
  whitish 
  callus, 
  which 
  extends 
  

   upwards 
  to 
  the 
  insertion 
  of 
  the 
  last 
  with 
  the 
  penultimate 
  whorl, 
  but 
  

   does 
  not 
  quite 
  reach 
  to 
  the 
  margin 
  of 
  the 
  aperture 
  ; 
  labrum 
  acute 
  (?) 
  ; 
  

   aperture 
  inversely 
  auriform. 
  Alt. 
  (of 
  largest 
  specimen, 
  allowing 
  for 
  

   the 
  apical 
  whorls) 
  21*5, 
  diam. 
  maj. 
  6".5 
  mm. 
  ; 
  aperture, 
  alt. 
  6*5, 
  

   diam. 
  2*5 
  mm. 
  

  

  