﻿AND 
  OTHER 
  FAMILIES. 
  85 
  

  

  Hab. 
  Mexico. 
  Professor 
  Vanuxem. 
  

  

  My 
  Cabinet. 
  

  

  Cabinet 
  of 
  Professor 
  Vanuxem. 
  

  

  Cabinet 
  of 
  the 
  Academy 
  of 
  Natural 
  Sciences 
  of 
  Philadelphia. 
  

  

  Cabinet 
  of 
  P. 
  H. 
  Nicklin. 
  

  

  Diam. 
  1*2, 
  Length 
  2-5 
  inches. 
  

  

  Remarks. 
  — 
  Among 
  the 
  shells 
  brought 
  from 
  Mexico 
  by 
  professor 
  

   Vanuxem, 
  was 
  this 
  fine 
  Achatina, 
  which 
  belongs 
  to 
  Lamarck's 
  second 
  

   division 
  of 
  this 
  genus. 
  It 
  very 
  closely 
  resembles 
  the 
  Buccinum 
  striatum 
  

   (Chem.), 
  Polyphemus 
  glans* 
  (Say), 
  Glandina 
  (Say). 
  It 
  differs 
  from 
  

   it 
  in 
  having 
  crenulated 
  sutures, 
  and 
  in 
  having 
  fine 
  transverse 
  lines, 
  as 
  

   well 
  as 
  longitudinal 
  striae. 
  The 
  indistinct 
  opake 
  white 
  spots, 
  which 
  

   are 
  more 
  frequent 
  on 
  the 
  front 
  of 
  the 
  body 
  whorl, 
  are, 
  I 
  believe, 
  pecu- 
  

   liar 
  to 
  this 
  species. 
  It 
  is 
  larger 
  by 
  one-third 
  than 
  any 
  individual 
  of 
  

   the 
  striata 
  which 
  I 
  have 
  seen. 
  

  

  In 
  concluding 
  these 
  descriptions 
  and 
  observations, 
  I 
  will 
  take 
  ad- 
  

   vantage 
  of 
  the 
  opportunity 
  to 
  express 
  my 
  thanks 
  to 
  those 
  gentlemen 
  

   who 
  have 
  kindly 
  assisted 
  me 
  with 
  new 
  shells 
  and 
  rendered 
  other 
  

   friendly 
  offices. 
  Among 
  these 
  I 
  have 
  been 
  particularly 
  obliged 
  by 
  

   Philip 
  H. 
  Nicklin, 
  Esq., 
  William 
  Cooper, 
  Esq. 
  and 
  professor 
  Troost. 
  

   To 
  the 
  Academy 
  of 
  Natural 
  Sciences 
  of 
  Philadelphia 
  an 
  acknowledge- 
  

   ment 
  is 
  due, 
  for 
  the 
  liberal 
  and 
  unhesitating 
  vote 
  which 
  it 
  passed, 
  to 
  

   permit 
  me 
  to 
  describe 
  for 
  our 
  Transactions 
  the 
  new 
  species 
  in 
  their 
  

   splendid 
  and 
  highly 
  useful 
  collection. 
  

  

  I 
  will 
  take 
  this 
  opportunity 
  also 
  to 
  correct 
  the 
  habitat 
  of 
  the 
  Unio 
  

   brevidens 
  (Vol. 
  IV. 
  page 
  75), 
  which 
  professor 
  Troost 
  thinks 
  has 
  not 
  been 
  

   found 
  in 
  the 
  Ohio, 
  but 
  only 
  in 
  the 
  Cumberland. 
  The 
  specimen 
  which 
  

   Mr 
  Cooper 
  kindly 
  gave 
  to 
  me 
  to 
  be 
  described, 
  came, 
  I 
  believe, 
  originally 
  

   from 
  professor 
  Troost. 
  The 
  specimen 
  figured 
  was 
  not 
  more 
  than 
  half 
  

   grown. 
  The 
  older 
  individuals 
  usually 
  have 
  an 
  arched 
  ridge 
  along 
  the 
  

  

  * 
  Cochlicopa 
  rosea 
  (Fer.). 
  It 
  should 
  now 
  be 
  called 
  fi.cha.tina 
  striata, 
  unless 
  the 
  generic 
  

   name 
  be 
  changed, 
  the 
  propriety 
  of 
  which 
  I 
  doubt. 
  

   VOL. 
  V. 
  W 
  

  

  