﻿PYCNOGONIDA 
  FROM 
  JAPANESE 
  WATERS 
  — 
  HEDGPETH 
  287 
  

  

  The 
  general 
  appearance 
  of 
  this 
  animal, 
  together 
  with 
  the 
  long 
  

   slender 
  propodus 
  and 
  moderately 
  spiny 
  legs, 
  places 
  it 
  close 
  to 
  this 
  

   species, 
  although 
  Schimkewitsch's 
  figures 
  leave 
  much 
  to 
  be 
  desired. 
  

  

  This 
  specimen 
  is 
  a 
  curious 
  abnormality, 
  with 
  three 
  legs 
  on 
  the 
  right 
  

   side 
  and 
  four 
  on 
  the 
  left 
  (fig. 
  41, 
  h). 
  The 
  larger 
  distal 
  end 
  of 
  the 
  

   middle 
  lateral 
  process 
  suggests 
  a 
  limb 
  bud 
  or 
  rudimentary 
  socket 
  for 
  

   the 
  missing 
  leg. 
  There 
  is 
  no 
  evidence 
  that 
  this 
  is 
  a 
  result 
  of 
  regenera- 
  

   tion 
  after 
  an 
  injury. 
  This 
  and 
  other 
  abnormalities 
  are 
  discussed 
  in 
  

   more 
  detail 
  in 
  another 
  paper 
  (Hedgpeth, 
  1947). 
  

  

  The 
  locality 
  for 
  this 
  collection 
  is 
  near 
  the 
  southern 
  coast 
  of 
  

   Hokkaido. 
  

  

  ACHELIA 
  PRIBILOFENSIS 
  (Cole) 
  

  

  Ammothea 
  pribilofensis 
  Cole, 
  1904, 
  pp. 
  270-273, 
  pi. 
  12, 
  fig. 
  6; 
  pi. 
  18, 
  figs. 
  7, 
  8; 
  

  

  pi, 
  19, 
  figs. 
  1-8. 
  

   Ammothea 
  (AcJielia) 
  priMlovensis 
  Schimkewitsch, 
  1930, 
  pp. 
  156-160, 
  figs. 
  46-49. 
  

  

  Collecting 
  record. 
  — 
  Albatross 
  shore 
  trip, 
  Milne 
  Bay, 
  Simushiru, 
  

   June 
  23, 
  1906, 
  2 
  females. 
  

  

  This 
  record 
  of 
  two 
  females, 
  one 
  a 
  full-grown 
  mature 
  specimen, 
  ex- 
  

   tends 
  the 
  range 
  of 
  this 
  species 
  from 
  the 
  Pribilof 
  s 
  to 
  the 
  central 
  Kuriles. 
  

  

  ACHELIA 
  SUPERBA 
  (Loman) 
  

  

  Ammothea 
  superba 
  Loman, 
  1911, 
  pp. 
  11-12, 
  pi. 
  1, 
  figs. 
  14-15 
  ; 
  pi. 
  2, 
  figs. 
  16-24. 
  — 
  

   Ohshima 
  and 
  Kishida, 
  1947, 
  p. 
  1008, 
  fig. 
  2860. 
  

  

  Collecting 
  records. 
  — 
  Albatross 
  station 
  5021, 
  latitude 
  48°32'30'' 
  N., 
  

   longitude 
  145°07'30" 
  E., 
  73 
  fathoms, 
  September 
  27, 
  1906, 
  30.9°, 
  

   1 
  female. 
  

  

  This 
  specimen 
  falls 
  well 
  with 
  the 
  bathymetric 
  range 
  of 
  80-150 
  

   meters 
  established 
  by 
  Loman. 
  

  

  ACHELIA 
  BITUBERCULATA. 
  new 
  species 
  

  

  Figure 
  41, 
  a-g 
  

  

  Holotype 
  {male) 
  : 
  U.S.N.M. 
  No. 
  80575, 
  Misaki, 
  Sept. 
  1, 
  1929. 
  Co- 
  

   rallines. 
  

  

  Description. 
  — 
  Trunk 
  compact, 
  disk-shaped, 
  segmentation 
  not 
  

   marked, 
  lateral 
  processes 
  touching. 
  At 
  the 
  anterior 
  corner 
  of 
  each 
  

   lateral 
  process 
  is 
  a 
  pair 
  of 
  small 
  tubercles 
  which 
  appear 
  to 
  be 
  fused 
  at 
  

   the 
  base, 
  and 
  on 
  the 
  posterior 
  corner 
  there 
  is 
  a 
  larger, 
  single 
  tubercle. 
  

   There 
  are 
  small 
  spines 
  at 
  the 
  apices 
  of 
  each 
  tubercle. 
  The 
  eye 
  tubercle 
  

   is 
  tall 
  and 
  slender, 
  with 
  well-marked 
  eyes 
  near 
  the 
  summit. 
  There 
  are 
  

   two 
  dorsal 
  trunk 
  tubercles, 
  about 
  half 
  the 
  diameter 
  of 
  the 
  eye 
  tubercle 
  

   and 
  about 
  the 
  same 
  height. 
  The 
  second 
  tubercle 
  rises 
  immediately 
  

   anterior 
  to 
  the 
  origin 
  of 
  the 
  abdomen. 
  The 
  integument 
  is 
  granular, 
  

   heavily 
  pigmented 
  ; 
  color 
  deep 
  brown. 
  

  

  