﻿208 
  

  

  PKOCICEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETT, 
  

  

  Bracebridge 
  Pool 
  contains 
  A. 
  cygnma. 
  It 
  is 
  present 
  in 
  great 
  

   numbers, 
  and 
  its 
  shape 
  is 
  very 
  constant. 
  The 
  specimen 
  described 
  in 
  

   this 
  work 
  may 
  be 
  taken 
  as 
  typical 
  of 
  not 
  only 
  the 
  pool 
  but 
  of 
  the 
  

   species. 
  A. 
  anatitta 
  is 
  absent. 
  

  

  Elackroot 
  Pool 
  contains 
  both 
  A. 
  cypioia 
  and 
  A. 
  anatina. 
  A. 
  cygnaa 
  

   is 
  normal, 
  but 
  anatina 
  possesses 
  a 
  number 
  of 
  specimens 
  which 
  vary 
  

   from 
  the 
  type. 
  Only 
  a 
  limited 
  number 
  from 
  this 
  pool 
  has 
  been 
  

   examined. 
  

  

  Sca.le 
  , 
  a-tout 
  lin. 
  to 
  t.Ke 
  

  

  In 
  Keeper's 
  Pool 
  neither 
  A. 
  cygnaa 
  nor 
  A. 
  anatina 
  is 
  found. 
  

  

  Longmore 
  Pool 
  contains 
  only 
  A. 
  anatina. 
  A 
  very 
  large 
  number 
  of 
  

   specimens 
  from 
  this 
  water 
  has 
  been 
  examined. 
  Tlie 
  type 
  is 
  quite 
  

   prevalent, 
  but 
  there 
  is 
  also 
  to 
  be 
  found 
  a 
  number 
  varying 
  more 
  or 
  

   less 
  from 
  it. 
  Some 
  viewed 
  laterally 
  are 
  almost 
  globose, 
  and 
  it 
  is 
  

   possible 
  to 
  find 
  every 
  grade 
  of 
  shape 
  between 
  the 
  latter 
  and 
  the 
  type. 
  

  

  Powell's 
  Pool 
  contains 
  both 
  A. 
  cygncca 
  and 
  A. 
  anatina. 
  

  

  Windly 
  Pool 
  also 
  contains 
  both, 
  and 
  a 
  great 
  many 
  have 
  been 
  

   examined. 
  A. 
  cygncea 
  is 
  fairly 
  constant 
  in 
  its 
  shape, 
  but 
  in 
  anatina, 
  

  

  