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  Systematic 
  Arrangement 
  of 
  the 
  Family 
  SalmonidjB. 
  

  

  2. 
  Salvelinus, 
  Nilss. 
  

   The 
  species 
  of 
  Char 
  may 
  be 
  arranged 
  as 
  follows 
  : 
  — 
  

  

  1. 
  S. 
  alpiniis 
  group. 
  — 
  Head 
  of 
  vomer 
  witli 
  posterior 
  process 
  

  

  but 
  little 
  developed. 
  Basi-brnnchial 
  teeth 
  uniserial. 
  

   No 
  dark 
  spots 
  or 
  markings. 
  Circumpolar. 
  

  

  2. 
  S.fontinaJis 
  group. 
  Head 
  of 
  vomer 
  with 
  a 
  well-developed 
  

  

  posterior 
  process. 
  Basi-branchial 
  teetli 
  absent. 
  

   Blackish 
  or 
  dark 
  olivaceous 
  spots 
  or 
  markings 
  on 
  

   back, 
  dorsal, 
  and 
  caudal 
  fins. 
  N. 
  America. 
  

  

  3. 
  S. 
  namaycush 
  group. 
  — 
  Head 
  of 
  vomer 
  with 
  a 
  long 
  poste- 
  

  

  rior 
  process. 
  Basi-branchial 
  teeth 
  in 
  a 
  long 
  patch. 
  

   N. 
  America. 
  

  

  Fia-. 
  3. 
  

  

  

  Diagrams 
  showing 
  the 
  arrangement 
  of 
  the 
  vomerine 
  teeth 
  in 
  

   a. 
  iSalvelinus 
  'perisii, 
  b. 
  S.fontinulis, 
  c. 
  8. 
  namaycush, 
  

  

  S.fontinaJis 
  is 
  so 
  exactly 
  intermediate 
  between 
  the 
  typical 
  

   Cbar 
  and 
  aS'. 
  namaycush 
  in 
  the 
  form 
  and 
  dentition 
  of 
  the 
  

   vomer 
  that 
  I 
  think 
  it 
  best 
  to 
  give 
  up 
  the 
  genus 
  Cristivomer, 
  

   Gill 
  & 
  Jordan. 
  

  

  3. 
  HUCHO, 
  Gizuth, 
  

  

  This 
  genus 
  Includes 
  three 
  species 
  : 
  — 
  H. 
  hucho, 
  Linn., 
  from 
  

   the 
  Danube 
  ; 
  //. 
  taimen, 
  Pall., 
  from 
  Siberia, 
  and 
  H. 
  perryiy 
  

   Brev., 
  from 
  Saghalien 
  and 
  Yesso. 
  

  

  4. 
  Beachymystax, 
  Gunth. 
  

   Closely 
  related 
  to 
  Hucho. 
  A 
  single 
  species 
  from 
  Siberia. 
  

  

  