﻿PYCNOGONIDA 
  FROM 
  JAPANESE 
  WATERS 
  — 
  HEDGPETH 
  

  

  267 
  

  

  joints 
  together 
  slightly 
  longer 
  than 
  the 
  third. 
  Terminal 
  joints 
  

   adorned 
  with 
  fine 
  setae. 
  

  

  Oviger 
  rather 
  short 
  and 
  heavy. 
  Fourth 
  segment 
  shorter 
  than 
  fifth, 
  

   slightly 
  curved; 
  fifth 
  segment 
  straight, 
  slightly 
  dilate 
  at 
  distal 
  end, 
  

   but 
  without 
  conspicuous 
  processes 
  or 
  spines. 
  Compound 
  spines 
  of 
  

   terminal 
  segments 
  large, 
  with 
  two 
  or 
  three 
  pairs 
  of 
  coarse 
  denticula- 
  

   tions. 
  Terminal 
  claw 
  large, 
  with 
  8 
  or 
  9 
  picketlike 
  spines. 
  Formula 
  : 
  

   13: 
  11: 
  9: 
  9:: 
  9. 
  

  

  Third 
  leg 
  : 
  First 
  and 
  third 
  coxae 
  quadrate, 
  second 
  coxa 
  about 
  two- 
  

   and-a-half 
  times 
  as 
  long 
  as 
  first 
  and 
  third 
  together. 
  Femur 
  not 
  quite 
  

   as 
  long 
  as 
  first 
  tibia 
  and 
  slightly 
  more 
  than 
  half 
  as 
  long 
  as 
  second. 
  

   There 
  are 
  fine 
  setae 
  on 
  the 
  long 
  joints. 
  Tarsus 
  and 
  propodus 
  subequal, 
  

   with 
  fine 
  well-separated 
  spines 
  along 
  the 
  ventral 
  surface. 
  Terminal 
  

   claw 
  large, 
  heavy, 
  half 
  to 
  less 
  than 
  half 
  as 
  long 
  as 
  propodus. 
  Auxiliary 
  

   claws 
  lacking. 
  

  

  Measurements. 
  — 
  As 
  follows 
  : 
  

  

  Mm. 
  

   3.0 
  

   9.0 
  

   4.0 
  

  

  Proboscis 
  

  

  Trunk 
  

  

  Second 
  lateral 
  process, 
  width 
  

  

  Abdomen 
  

  

  Scape 
  4. 
  5 
  

  

  Chela 
  (chord) 
  6.5 
  

  

  Palpus 
  7. 
  5 
  

  

  Third 
  leg: 
  

  

  First 
  coxa- 
  

   Second 
  coxa- 
  

   Third 
  coxa— 
  

  

  Mm. 
  

  

  1.5 
  

  

  5.0 
  

  

  1.3 
  

  

  Femur 
  12. 
  

  

  First 
  tibia 
  15.25 
  

  

  Second 
  tibia 
  21. 
  5 
  

  

  Tarsus 
  2. 
  25 
  

  

  Propodus 
  2. 
  2 
  

  

  Terminal 
  claw 
  1. 
  1 
  

  

  Remarks. 
  — 
  In 
  some 
  ways 
  this 
  species 
  is 
  intermediate 
  between 
  N. 
  

   uniunguiculatu/m 
  and 
  N. 
  alhatrossi. 
  It 
  has 
  the 
  large 
  chela 
  of 
  N. 
  

   uniunguiculatum, 
  but 
  with 
  many 
  more 
  teeth, 
  and 
  the 
  palpi 
  of 
  the 
  two 
  

   species 
  are 
  similar, 
  although 
  the 
  fourth 
  joint 
  of 
  N. 
  ohshimai 
  is 
  some- 
  

   what 
  shorter. 
  However, 
  it 
  is 
  much 
  longer 
  than 
  the 
  comparable 
  joint 
  

   in 
  N. 
  alhatrossi. 
  The 
  structure 
  of 
  the 
  compound 
  spines 
  of 
  the 
  oviger 
  

   is 
  closer 
  to 
  N. 
  alhatrossi 
  than 
  to 
  N. 
  unimiguiculatum. 
  N. 
  ohshimai 
  

   appears 
  to 
  be 
  a 
  much 
  larger 
  species 
  than 
  either 
  N. 
  uniunguiculatum 
  or 
  

   N. 
  alhatrossi, 
  to 
  judge 
  from 
  this 
  single 
  male 
  specimen, 
  which 
  is 
  some- 
  

   what 
  flabby. 
  

  

  The 
  locality 
  is 
  southeast 
  of 
  Shikoku. 
  

  

  This 
  species 
  is 
  named 
  for 
  Dr. 
  Hiroshi 
  Ohshima, 
  former 
  director 
  of 
  

   the 
  Amakusa 
  Marine 
  Biological 
  Laboratory, 
  who 
  has 
  made 
  several 
  

   excellent 
  contributions 
  to 
  the 
  literature 
  on 
  the 
  Pycnogonida. 
  

  

  NYMPHON 
  NIPPONENSE, 
  new 
  species 
  

   FiGUBE 
  32 
  

  

  Types. 
  — 
  Holotype 
  (ovigerous 
  male) 
  : 
  U.S.N.M. 
  No. 
  80592, 
  Albatross 
  

   station 
  4980, 
  latitude 
  34°09' 
  N., 
  longitude 
  137°55' 
  E., 
  507 
  fathoms, 
  

   39.0° 
  F., 
  September 
  1, 
  1906. 
  

  

  