﻿■ 
  

  

  AND 
  OTHER 
  FAMILIES. 
  117 
  

  

  Sue 
  cine 
  a 
  retusa. 
  Plate 
  XIX. 
  fig. 
  86. 
  

  

  Testa 
  ovato-oblongd, 
  tenuissima, 
  pelhicidd, 
  flavidula 
  ; 
  spira 
  brevi 
  ; 
  anfractibus 
  

   ternis 
  ; 
  aperturd 
  inferne 
  dilataid 
  et 
  retractd. 
  

  

  Shell 
  ovately 
  oblong, 
  very 
  thin, 
  pellucid, 
  yellowish 
  ; 
  spire 
  short 
  ; 
  whorls 
  three 
  ; 
  

   aperture 
  below 
  dilate 
  and 
  drawn 
  back. 
  

  

  Hab. 
  Ohio, 
  near 
  Cincinnati. 
  T. 
  G. 
  Lea. 
  

   Diam. 
  -3, 
  Length 
  -7 
  of 
  an 
  inch. 
  

  

  Remarks. 
  — 
  A 
  single 
  specimen 
  only 
  of 
  this 
  species 
  has 
  come 
  into 
  my 
  

   possession. 
  It 
  diners 
  so 
  much 
  from 
  any 
  of 
  the 
  described 
  species, 
  in 
  

   the 
  dilatation 
  and 
  retraction 
  of 
  the 
  inferior 
  part 
  of 
  the 
  aperture, 
  that 
  I 
  

   have 
  not 
  hesitated 
  to 
  consider 
  it 
  new. 
  

  

  VOL. 
  V. 
  2 
  E 
  

  

  