﻿ichich 
  inhabit 
  Jamaica. 
  91 
  

  

  which 
  C. 
  Dunkeri 
  is 
  the 
  type. 
  The 
  differences, 
  although 
  

   very 
  constant, 
  are 
  small, 
  except 
  in 
  size. 
  In 
  this 
  respect 
  the 
  

   differences 
  are 
  both 
  greater 
  and 
  less 
  constant. 
  Since 
  however 
  

   the 
  peculiarities 
  extend 
  to 
  many 
  characters, 
  as 
  size, 
  general 
  

   form, 
  form 
  of 
  the 
  whorls 
  and 
  of 
  the 
  aperture, 
  the 
  sculpture, 
  

   and 
  color, 
  we 
  regard 
  them 
  provisionally 
  as 
  species, 
  although 
  

   it 
  must 
  be 
  acknowledged 
  that 
  the 
  varieties 
  of 
  C. 
  Maugeri 
  

   have 
  nearly 
  as 
  good 
  a 
  claim 
  to 
  this 
  rank. 
  The 
  same 
  general 
  

   remarks 
  on 
  their 
  distribution 
  might 
  be 
  made, 
  as 
  in 
  the 
  case 
  

   of 
  C. 
  Maugeri. 
  

  

  Cylindrella 
  princeps. 
  Shell 
  like 
  C. 
  Dunkeri, 
  but 
  differ- 
  

   ing 
  in 
  the 
  following 
  characters 
  : 
  it 
  is 
  much 
  larger 
  ; 
  is 
  of 
  a 
  

   reddish 
  brown 
  or 
  horn 
  color 
  ; 
  the 
  strise 
  are 
  much 
  finer, 
  being 
  

   nearly 
  microscopic 
  ; 
  the 
  whorls 
  are 
  flat 
  : 
  aperture 
  elliptical 
  

   and 
  angulated 
  at 
  the 
  lower 
  extremity 
  ; 
  lip 
  quite 
  thick 
  : 
  it 
  

   loses 
  about 
  eight 
  whorls 
  by 
  truncation 
  and 
  has 
  twelve 
  remain- 
  

   ing. 
  Inhabits 
  Swift 
  R. 
  head, 
  St. 
  Greorge. 
  Length 
  .98 
  inch 
  ; 
  

   breadth 
  .15 
  inch. 
  

  

  Cylindrella 
  elatior. 
  This 
  is 
  also 
  a 
  larger 
  shell 
  than 
  C. 
  

   Dunkeri, 
  thicker, 
  and 
  strongly 
  striated, 
  with 
  the 
  whorls 
  more 
  

   planulate 
  : 
  it 
  is 
  much 
  longer 
  and 
  more 
  slender 
  than 
  C 
  rubra. 
  

   Inhabits 
  Westmoreland. 
  Length 
  .93 
  inch 
  ; 
  breadth 
  .13 
  inch. 
  

  

  Achatina 
  striosa 
  is 
  possibly 
  only 
  a 
  variety 
  of 
  Bulimus 
  

   octonoides 
  with 
  the 
  columella 
  truncated. 
  

  

  Achatina 
  proxima. 
  Shell 
  conic 
  but 
  slender 
  : 
  very 
  pale 
  

   brown 
  or 
  horn 
  color 
  ; 
  with 
  dark 
  brown 
  transverse 
  stripes, 
  about 
  

   three 
  on 
  each 
  whorl, 
  less 
  distinct 
  on 
  the 
  upper 
  whorls 
  : 
  with 
  

   fine 
  regular 
  transverse 
  small 
  elevated 
  lamellae 
  : 
  apex 
  moder- 
  

   ately 
  obtuse, 
  smooth 
  on 
  the 
  nuclear 
  whorls 
  : 
  spire 
  long, 
  with 
  

   the 
  outlines 
  nearly 
  rectilinear 
  : 
  whorls 
  eight, 
  planulate, 
  ab- 
  

   ruptly 
  shouldered 
  above, 
  with 
  a 
  rather 
  deep 
  suture 
  : 
  aperture 
  

   small, 
  ovate 
  : 
  labrum 
  thin 
  and 
  sharp 
  : 
  columella 
  nearly 
  

   straight. 
  This 
  shell 
  resembles 
  A. 
  Blandiana. 
  Its 
  divergence 
  

  

  