﻿Report 
  U. 
  S. 
  F, 
  C. 
  1903. 
  

  

  Plate 
  VII. 
  

  

  F'".. 
  1. 
  Oyster 
  with 
  right 
  shell 
  and 
  mantle 
  leinoved 
  a 
  and 
  o 
  ongin 
  of 
  arteries 
  from 
  the 
  ventricle: 
  

   au, 
  auricle 
  of 
  heait 
  hi 
  vessel 
  cai 
  r\in^ 
  l)lood 
  from 
  the 
  gills 
  to 
  the 
  auricle 
  of 
  tlie 
  heart; 
  bj, 
  outline 
  

   of 
  organ 
  of 
  Bojaiius 
  the 
  s 
  ,< 
  die 
  1 
  l^l 
  hie\ 
  /, 
  jioies 
  fi 
  )rii 
  w 
  hi( 
  li 
  the 
  wafer 
  issues 
  into 
  the 
  branchial 
  

   canals 
  after 
  passu 
  tli 
  i 
  litl 
  ilK 
  / 
  1 
  i 
  i 
  / 
  / 
  / 
  n 
  I 
  / 
  imirctiM' 
  and 
  I 
  «<> 
  uanglia 
  of 
  the 
  

   nervous 
  system: 
  / 
  ^ 
  II 
  i 
  l 
  I 
  l 
  » 
  i 
  il 
  u\ 
  n 
  i 
  Mis: 
  /(. 
  Iilnm-: 
  /. 
  li-anifiit: 
  il/, 
  ad- 
  

  

  ductor 
  muscle; 
  )) 
  II 
  iilli 
  I 
  nil 
  111 
  ui 
  wssli 
  u 
  111 
  III 
  liiiiiul' 
  ciiri-i'iits 
  iJiMiliiced 
  by 
  the 
  

   cilia; 
  ;), 
  iinlps: 
  // 
  iilt 
  i 
  end 
  ol 
  i 
  lybl 
  ped 
  il 
  iiiiist 
  It 
  s 
  t\leiiid 
  peniiiy 
  uf 
  sexual 
  and 
  renal 
  organs 
  

   of 
  ri^dil 
  side: 
  r, 
  anus 
  le 
  %eutiiLleot 
  heiit 
  

  

  Fi(i 
  •-', 
  I 
  )iaL;iaiii 
  t(i 
  sli 
  w 
  sexual 
  organb 
  of 
  the 
  oybtei 
  d 
  duct 
  of 
  sexual 
  gland. 
  Other 
  letters 
  as 
  above. 
  

  

  