﻿PYCNOGONIDA 
  FROM 
  JAPANESE 
  WATERS 
  — 
  HEDGPETH 
  293 
  

  

  Apparently 
  this 
  species 
  has 
  an 
  extensive 
  bathymetric 
  range 
  ; 
  all 
  pre- 
  

   vious 
  collections 
  appear 
  to 
  have 
  been 
  made 
  in 
  shallow 
  water, 
  whereas 
  

   these 
  records 
  indicate 
  a 
  further 
  range 
  from 
  88 
  to 
  918 
  fathoms. 
  The 
  

   range 
  of 
  the 
  Albatross 
  stations 
  at 
  which 
  this 
  species 
  was 
  collected 
  is 
  

   from 
  latitude 
  34° 
  to 
  44° 
  N., 
  from 
  southeast 
  of 
  Honshu 
  to 
  northeast 
  of 
  

   Hokli:aido. 
  

  

  ASCORHYNCHUS 
  GLABROIDES 
  Ortmann 
  

  

  Ascorhynchus 
  glatroides 
  Obtman, 
  1891, 
  pp. 
  160-161, 
  pi. 
  24, 
  fig. 
  3, 
  a, 
  h. 
  — 
  Loman, 
  

   1911, 
  p. 
  7. 
  

  

  Collecting 
  record. 
  — 
  Alhati'oss 
  station 
  4900 
  (1 
  male). 
  This 
  locality 
  

   is 
  west 
  of 
  Kyushu. 
  

  

  This 
  specimen 
  appears 
  to 
  be 
  identifiable 
  with 
  this 
  species 
  ; 
  it 
  is 
  sepa- 
  

   rable 
  from 
  the 
  other 
  members 
  of 
  the 
  genus 
  in 
  the 
  collection 
  on 
  the 
  

   basis 
  of 
  the 
  prominent 
  tubercles 
  on 
  the 
  lateral 
  processes, 
  which 
  are 
  

   two 
  or 
  three 
  times 
  as 
  tall 
  as 
  those 
  on 
  the 
  median 
  line 
  of 
  the 
  trunk, 
  

   and 
  the 
  short 
  processes 
  or 
  tubercles 
  on 
  the 
  first 
  coxae. 
  These 
  proc- 
  

   esses 
  are 
  pointed, 
  about 
  half 
  as 
  long 
  as 
  the 
  width 
  of 
  the 
  coxal 
  joint, 
  

   and 
  are 
  directed 
  upward 
  at 
  a 
  45° 
  angle. 
  There 
  is 
  also 
  a 
  single 
  small 
  

   process 
  on 
  the 
  middle 
  of 
  the 
  second 
  coxa. 
  The 
  proboscis 
  is 
  quite 
  

   pointed, 
  about 
  half 
  as 
  long 
  as 
  the 
  trunk. 
  The 
  abdomen 
  reaches 
  to 
  

   about 
  the 
  middle 
  of 
  the 
  second 
  coxae 
  of 
  the 
  last 
  pair 
  of 
  legs. 
  

  

  ASCORHYNCHUS 
  GLABERRIMUS 
  Schimkewitsch 
  

  

  Ascorhynchvs 
  glaberrimus 
  Schimkewitsch, 
  1913, 
  pp. 
  242-244, 
  pi. 
  3a, 
  figs. 
  8-14; 
  

   1930, 
  pp. 
  107-110, 
  figs. 
  23-25. 
  

  

  Collecting 
  record. 
  — 
  Nagasaki, 
  Japan 
  (1 
  ovigerous 
  male, 
  1 
  female, 
  1 
  

   juvenile) 
  . 
  

  

  Compared 
  with 
  the 
  other 
  species 
  from 
  Japanese 
  waters, 
  A. 
  glaber- 
  

   rimus 
  has 
  a 
  bald, 
  unadorned 
  appearance. 
  There 
  are, 
  however, 
  low 
  

   conical 
  tubercles 
  on 
  the 
  ends 
  of 
  the 
  lateral 
  processes, 
  and 
  small 
  tuber- 
  

   cles 
  at 
  the 
  bases 
  of 
  the 
  chelifores. 
  So 
  far, 
  this 
  species 
  is 
  known 
  only 
  

   from 
  the 
  vicinity 
  of 
  Nagasaki, 
  and 
  no 
  record 
  of 
  its 
  bathymetric 
  dis- 
  

   tribution 
  is 
  available. 
  

  

  Genus 
  CILUNCULUS 
  Loman, 
  1908 
  

  

  The 
  principal 
  characters 
  that 
  set 
  this 
  genus 
  off 
  from 
  such 
  closely 
  

   related 
  genera 
  as 
  Ammothella 
  and 
  Heterofragilia 
  are 
  the 
  longer 
  sec- 
  

   ond 
  joint 
  of 
  the 
  oviger, 
  the 
  tubular 
  femoral 
  cement 
  gland 
  of 
  the 
  male 
  

   (which 
  is 
  present 
  in 
  some 
  species 
  of 
  Ammothella)^ 
  and 
  the 
  overhang- 
  

   ing 
  dorsal 
  process 
  of 
  the 
  cephalic 
  segment. 
  A 
  very 
  closely 
  related 
  

   form 
  from 
  Brazil 
  is 
  that 
  described 
  by 
  Mello-Leitao 
  (1946) 
  as 
  Acan- 
  

   thmnmothella., 
  which 
  I 
  have 
  already 
  suggested 
  (1948, 
  p. 
  262) 
  is 
  a 
  

  

  