﻿No.ii:K 
  onSEnVATTOXS 
  ox 
  THE 
  ASTACIDJE— 
  FAXON. 
  6()i 
  

  

  White, 
  iu 
  liis 
  " 
  List 
  of 
  the 
  Specimens 
  of 
  Crustacea 
  in 
  the 
  Collection 
  

   of 
  the 
  British 
  Museum.'' 
  1847, 
  page 
  71, 
  gives 
  ^'- 
  Poiamohius 
  curopwus 
  

   Leach, 
  Edin. 
  Enc," 
  as 
  a 
  synonym 
  of 
  Astacus 
  fitiviaUHs. 
  This 
  seems 
  to 
  

   be 
  an 
  error. 
  Leach's 
  article, 
  ''Crustaceology," 
  in 
  the 
  seventh 
  volume 
  

   of 
  the 
  Edinburgh 
  Encyclopa'dia, 
  Avas 
  published 
  in 
  1814. 
  The 
  European 
  

   crayfish 
  is 
  there 
  called 
  Astacus 
  Jiuviatilis; 
  the 
  name 
  Potamoh'ms 
  

   europcvus 
  does 
  not 
  appear. 
  

  

  Subgenus 
  CAMBAEOIDES 
  Faxon. 
  

   Cavibaro'kles 
  Faxon, 
  Proc. 
  Arner. 
  Acad. 
  Arts 
  and 
  Sci., 
  XX, 
  p. 
  150, 
  1884. 
  

   Type, 
  Astacus 
  japoiiicus 
  De 
  Haan. 
  

  

  ASTACUS 
  (CAMBAROiDES) 
  SIMILIS 
  Koelbel. 
  

  

  Astacus 
  (Camharoides) 
  similis 
  Koelhel, 
  Anzeiger 
  d. 
  kais. 
  Akad. 
  d. 
  Wissensch. 
  in 
  

   Wien, 
  math.-naturw. 
  Classe, 
  29tpr 
  .Jalnj?., 
  1892, 
  pp. 
  176, 
  177; 
  Sitzuugs- 
  

   berichte, 
  CT, 
  Pt. 
  1, 
  1892, 
  pp. 
  650-G56, 
  ligs. 
  1, 
  2, 
  4, 
  5, 
  7-11. 
  

  

  There 
  are 
  three 
  specimens 
  (two 
  males, 
  one 
  female) 
  of 
  this 
  species 
  in 
  

   the 
  United 
  States 
  I^ational 
  Museum, 
  collected 
  by 
  P. 
  L. 
  Jouy 
  near 
  

   Fusan, 
  and 
  at 
  Seoul, 
  Korea; 
  Koelbel's 
  specimens 
  came 
  from 
  the 
  Prov- 
  

   ince 
  of 
  Kjiing-Kwi-do, 
  Korea. 
  

  

  The 
  Korean 
  crayfish 
  is 
  exceedingly 
  close 
  to 
  Astacus 
  japonimis. 
  The 
  

   only 
  constant 
  differences 
  appear 
  to 
  be 
  these: 
  In 
  A.japonicns 
  the 
  ros- 
  

   trum 
  terminates 
  iu 
  a 
  minute 
  horny 
  denticle, 
  and 
  the 
  lateral 
  margin 
  

   bears 
  a 
  similar 
  denticle' 
  on 
  each 
  side, 
  a 
  little 
  way 
  behind 
  the 
  apex, 
  

   while 
  in 
  A. 
  similis 
  the 
  lateral 
  denticles 
  are 
  wanting. 
  The 
  fingers 
  of 
  A. 
  

   japonicHs 
  are 
  a 
  little 
  shorter 
  than 
  those 
  of 
  A. 
  similis 
  and 
  there 
  is 
  some 
  

   difference 
  in 
  the 
  form 
  of 
  the 
  first 
  pair 
  of 
  abdominal 
  appendages 
  ( 
  See 
  Plate 
  

   X, 
  fig. 
  10, 
  of 
  my 
  "Revision 
  of 
  the 
  Astacidic" 
  and 
  tigs. 
  8, 
  9 
  of 
  Koelbel). 
  

   The 
  other 
  differences 
  pointed 
  out 
  by 
  Koelbel 
  are 
  not 
  constant; 
  the 
  

   median 
  rostral 
  carina 
  is 
  more 
  pronounced 
  in 
  two 
  of 
  the 
  specimens 
  of 
  

   A. 
  similis 
  in 
  the 
  National 
  Museum 
  than 
  in 
  any 
  of 
  the 
  nine 
  specimens 
  of 
  

   A.japonicus 
  that 
  1 
  have 
  seen, 
  and 
  in 
  one 
  of 
  the 
  three 
  Korean 
  specimens 
  

   the 
  spine 
  on 
  the 
  inner 
  branch 
  of 
  the 
  sixth 
  abdominal 
  appendage 
  is 
  as 
  

   far 
  removed 
  from 
  the 
  margin 
  as 
  it 
  is 
  in 
  A.japonicns. 
  

  

  In 
  two 
  of 
  the 
  examples 
  in 
  the 
  United 
  States 
  National 
  Museum 
  

   (including 
  the 
  largest 
  one 
  of 
  the 
  three) 
  the 
  rostrum 
  is 
  shorter 
  than 
  the 
  

   antenual 
  peduncle. 
  

  

  Subgenus 
  ASTACUS. 
  

  

  ASTACUS 
  KLAMATHENSIS 
  Stimpson. 
  

  

  Klamath 
  River, 
  Siskiyou 
  County, 
  California; 
  Umatilla 
  River, 
  Pendle- 
  

   ton, 
  Oregon; 
  Hangman 
  Creek, 
  Tekoa, 
  Washington; 
  Dart's 
  Mill, 
  Little 
  

   Spokane 
  River, 
  Washington 
  ; 
  Coeur 
  d'Alene 
  Lake, 
  Idaho 
  (Coll.LT.S.N.M.). 
  

  

  Specimens 
  from 
  the 
  Walla 
  Walla 
  River 
  at 
  Wallula, 
  Washington, 
  and 
  

  

  ' 
  According 
  to 
  Koelbel 
  (Sitzuugsber. 
  d. 
  kais. 
  Akad. 
  d. 
  Wissensch. 
  in 
  Wien, 
  CI, 
  Pt. 
  1, 
  

   p. 
  651, 
  fig. 
  3) 
  there 
  are 
  two 
  denticles 
  on 
  each 
  side 
  of 
  the 
  rostrum 
  in 
  some 
  sjjecimens 
  of 
  

   A.japonicus, 
  

  

  