﻿ivliich 
  inhabit 
  Jamaica. 
  97 
  

  

  convex 
  : 
  whorls 
  four 
  and 
  one-half 
  to 
  five, 
  a 
  little 
  convex, 
  with 
  

   a 
  moderately 
  impressed 
  suture 
  ; 
  last 
  whorl 
  subangular 
  : 
  aper« 
  

   ture 
  transversely 
  ovate, 
  laterally 
  dilated 
  : 
  lip 
  but 
  little 
  re- 
  

   flected 
  and 
  thickened 
  except 
  in 
  the 
  columellar 
  part, 
  which 
  is 
  

   well 
  thickened, 
  reflected, 
  and 
  appressed 
  : 
  umbilicus 
  wanting. 
  

   In 
  form 
  this 
  shell 
  most 
  resembles 
  a 
  very 
  depressed 
  H. 
  fusco- 
  

   cincta^ 
  but 
  is 
  much 
  more 
  dilated 
  laterally 
  near 
  the 
  aperture. 
  

  

  Grreatest 
  breadth 
  .94 
  inch 
  ; 
  least 
  breadth 
  .75 
  inch 
  ; 
  heighth 
  

   .6 
  inch. 
  

  

  This 
  species 
  is 
  named 
  for 
  its 
  habitat, 
  the 
  parish 
  of 
  St. 
  

   James. 
  

  

  Helix 
  spreta. 
  Shell 
  orbicular, 
  moderately 
  depressed 
  : 
  

   very 
  pale 
  horn 
  color, 
  translucent 
  : 
  smooth 
  : 
  spire 
  with 
  the 
  out- 
  

   lines 
  a 
  little 
  curvilinear 
  : 
  whorls 
  five, 
  quite 
  convex, 
  shouldered, 
  

   w^ith 
  a 
  rather 
  deep 
  suture 
  ; 
  last 
  whorl 
  well 
  rounded 
  : 
  aperture 
  

   sublunate 
  : 
  labrum 
  thin 
  and 
  sharp 
  : 
  umbilicus 
  rather 
  narrow 
  

   and 
  deep. 
  This 
  species 
  is 
  best 
  described 
  by 
  comparison 
  with 
  

   H. 
  peraffinis 
  and 
  H. 
  Boothiana. 
  Above, 
  the 
  spire 
  is 
  nearly 
  

   as 
  much 
  depressed 
  as 
  in 
  the 
  former 
  species 
  : 
  beneath, 
  the 
  last 
  

   whorl 
  is 
  nearly 
  as 
  convex 
  as 
  in 
  the 
  latter, 
  while 
  the 
  umbilicus 
  

   is 
  as 
  wide 
  as 
  in 
  the 
  former 
  ; 
  the 
  aperture 
  is 
  not 
  so 
  wide 
  as 
  in 
  

   H. 
  peraffinis 
  nor 
  so 
  high 
  as 
  in 
  H. 
  Boothiana. 
  

  

  Greatest 
  breadth 
  .25 
  inch 
  ; 
  least 
  breadth 
  .22 
  inch 
  ; 
  height 
  

   .17 
  inch. 
  

  

  Variety 
  errans 
  differs 
  from 
  the 
  above, 
  in 
  having 
  the 
  whorls 
  

   less 
  shouldered 
  and 
  consequently 
  the 
  suture 
  less 
  deep, 
  and 
  in 
  

   having 
  the 
  region 
  around 
  the 
  umbilicus 
  somewhat 
  thickened 
  

   infernally 
  so 
  as 
  to 
  be 
  opaque. 
  

  

  Helix 
  epistylium 
  var. 
  minor 
  differs 
  from'the 
  common 
  type 
  

   of 
  the 
  species 
  in 
  being 
  much 
  smaller, 
  with 
  a 
  more 
  rounded 
  

   outline 
  ; 
  beneath 
  it 
  is 
  considerably 
  more 
  convex 
  ; 
  the 
  surface 
  

   is 
  less 
  shining. 
  Grreatest 
  breadth 
  .52 
  inch 
  ; 
  least 
  breadth 
  .49 
  

   inch 
  ; 
  height 
  .45 
  inch. 
  It 
  inhabits 
  Westmoreland. 
  At 
  the 
  

   opposite 
  extremity 
  of 
  the 
  island, 
  in 
  Portland, 
  H. 
  epistylium 
  is 
  

  

  