﻿THE 
  ANNALS 
  

  

  AND 
  

  

  MAGAZINE 
  OF 
  NATURAL 
  HISTORY. 
  

  

  [SIXTH 
  SERIES.] 
  

   No. 
  16. 
  APRIL 
  1889. 
  

  

  XXXI. 
  — 
  Natural- 
  History 
  Notes 
  from 
  H.M. 
  Indian 
  Marine 
  

   Survey 
  Steamer 
  l 
  Investigator 
  f 
  Commander 
  Alfred 
  Carpen- 
  

   ter, 
  B.N., 
  D.S.O., 
  commanding. 
  — 
  No. 
  9. 
  On 
  anew 
  Type 
  of 
  

   Astrorhizidce 
  from 
  the 
  Bay 
  of 
  Bengal. 
  By 
  Henry 
  B. 
  

   Brady, 
  LL.D., 
  F.R.S. 
  

  

  A 
  FEW 
  clays 
  ago, 
  whilst 
  on 
  a 
  short 
  visit 
  to 
  this 
  city 
  (Calcutta), 
  

   my 
  good 
  friend 
  Mr. 
  J. 
  Wood-Mason, 
  the 
  Director 
  of 
  the 
  

   Indian 
  Museum, 
  brought 
  under 
  my 
  notice 
  a 
  number 
  of 
  Rhi- 
  

   zopods 
  of 
  a 
  type 
  hitherto 
  undescribed 
  which 
  he 
  had 
  recently 
  

   dredged 
  up 
  (on 
  board 
  the 
  ' 
  Investigator 
  ') 
  in 
  the 
  Bay 
  of 
  

   Bengal 
  ; 
  and 
  he 
  has 
  asked 
  me 
  to 
  furnish 
  a 
  brief 
  preliminary 
  

   account 
  of 
  them 
  for 
  communication 
  to 
  the 
  Microscopical 
  

   Society 
  of 
  Calcutta 
  * 
  and 
  for 
  subsequent 
  insertion 
  in 
  the 
  

   ' 
  Annals.' 
  

  

  The 
  organisms 
  referred 
  to 
  were 
  obtained 
  from 
  two 
  different 
  

   localities, 
  and 
  present 
  the 
  characters 
  of 
  two 
  distinct 
  though 
  

   closely 
  allied 
  species. 
  The 
  test 
  in 
  both 
  forms 
  consists 
  of 
  a 
  

   thin 
  arenaceous 
  disk, 
  but 
  in 
  the 
  one 
  case 
  the 
  disk 
  is 
  com- 
  

   planate, 
  in 
  the 
  other 
  more 
  or 
  less 
  patelloid 
  or 
  tent-like 
  ; 
  the 
  

  

  * 
  Before 
  which 
  it 
  was 
  read 
  on 
  Feb. 
  14th, 
  1889 
  : 
  communicated 
  by 
  the 
  

   President 
  of 
  the 
  Society. 
  

  

  Ann. 
  & 
  Mag. 
  N. 
  Hist. 
  Ser. 
  6. 
  Vol. 
  iii. 
  21 
  

  

  