﻿NKWTON: 
  on 
  Al'L-RIA 
  ATUIil. 
  167 
  

  

  ^Ir. 
  ('linpiiiaii's 
  ' 
  conipieliensive 
  memoir 
  on 
  that 
  subject, 
  publislied 
  in 
  

   Meliiouine 
  during 
  1914. 
  

  

  EXPLANATION 
  OF 
  PLATES 
  V 
  AND 
  VL 
  

  

  The 
  figures 
  are 
  photographed 
  f 
  nat. 
  size. 
  

  

  Atueia 
  atuei 
  (Basterot). 
  

  

  Miocene 
  : 
  Western 
  Australia. 
  

  

  The 
  specimen 
  described 
  is 
  in 
  the 
  Geological 
  Department 
  of 
  the 
  British 
  Museum. 
  

  

  Plate 
  V. 
  

   Lateral 
  view 
  of 
  specimen 
  : 
  — 
  

   A 
  = 
  Body-chamber 
  with 
  nearly 
  complete 
  outline. 
  

   B 
  = 
  Probable 
  muscular 
  impression 
  extending 
  from 
  the 
  umbilical 
  centre 
  to 
  

  

  the 
  periphery. 
  

   C 
  = 
  Lower 
  boundary 
  of 
  probable 
  muscular 
  attachment 
  region 
  obscurely 
  

  

  indicated. 
  

   D 
  = 
  Septal 
  muscular 
  impression. 
  

   E 
  = 
  Incomplete 
  septal 
  region 
  with 
  the 
  deeply 
  curved 
  septa. 
  

  

  Plate 
  VI. 
  

  

  Opposite 
  lateral 
  view 
  of 
  same 
  specimen. 
  

   A 
  = 
  Body-chamber. 
  

   B 
  = 
  Ramifying 
  tubes 
  of 
  Annelida. 
  

   C 
  = 
  Incomplete 
  septal 
  region. 
  

   D 
  = 
  The 
  angulated 
  lateral 
  lobe 
  of 
  a 
  septum. 
  

   E 
  = 
  Probable 
  Ostreiform 
  valve 
  in 
  cavity 
  at 
  the 
  top 
  of 
  the 
  body-chamber, 
  

  

  also 
  suggestive 
  of 
  a 
  portion 
  of 
  the 
  hard 
  ligamentous 
  hood 
  which 
  would 
  

  

  formerly 
  have 
  covei'ed 
  the 
  cephalic 
  region. 
  

  

  ^ 
  "On 
  the 
  Succession 
  and 
  Homotaxial 
  Relationships 
  of 
  the 
  Australian 
  

   Cainozoic 
  System 
  " 
  : 
  Mem. 
  Nat. 
  Mus. 
  Melbourne, 
  No. 
  5, 
  1914, 
  pp. 
  5-52. 
  

  

  