﻿PYCNOGONIDA 
  FROM 
  JAPANESE 
  WATERS 
  — 
  HEDGPETH 
  

  

  259 
  

  

  one-lialf 
  times 
  as 
  long 
  as 
  first. 
  Tibial 
  joints 
  armed 
  with 
  fine 
  well- 
  

   spaced 
  setae. 
  Tarsus 
  and 
  propodus 
  subequal, 
  the 
  tarsus 
  with 
  a 
  row 
  

   of 
  evenly 
  spaced 
  rather 
  long 
  ventral 
  spines, 
  the 
  propodus 
  with 
  a 
  simi- 
  

   lar 
  row, 
  interrupted 
  near 
  the 
  middle 
  by 
  a 
  pair 
  of 
  large 
  spines, 
  which 
  

   are 
  slightly 
  longer 
  than 
  the 
  diameter 
  of 
  the 
  propodus. 
  Terminal 
  

   claw 
  slightly 
  more 
  than 
  half 
  as 
  long 
  as 
  propodus, 
  slightly 
  curved 
  and 
  

   with 
  a 
  distal 
  knife 
  edge. 
  Auxiliary 
  claw 
  about 
  a 
  third 
  as 
  long 
  as 
  

   terminal 
  claw. 
  

  

  Measurements. 
  — 
  As 
  follows 
  : 
  

  

  Mm. 
  

  

  Proboscis 
  2. 
  75 
  

  

  Trunk 
  5. 
  1 
  

  

  Second 
  lateral 
  process, 
  width 
  3. 
  

  

  Abdomen 
  , 
  75 
  

  

  Scape 
  2. 
  5 
  

  

  Chela 
  ca. 
  2.5 
  

  

  Palpus 
  3. 
  75 
  

  

  Third 
  leg 
  : 
  

  

  First 
  coxa 
  

  

  Second 
  coxa- 
  

   Third 
  coxa__. 
  

  

  Mm. 
  

  

  1.0 
  

  

  2.5 
  

  

  1.25 
  

  

  Femur 
  6.0 
  

  

  First 
  tibia 
  7. 
  

  

  Second 
  tibia 
  9. 
  5 
  

  

  Tarsus 
  1. 
  5 
  

  

  Propodus 
  1.7 
  

  

  Terminal 
  claw 
  1. 
  

  

  Auxiliary 
  claw 
  . 
  4 
  

  

  Remarks. 
  — 
  The 
  two 
  large 
  spines 
  of 
  the 
  propodus 
  suggest 
  Nymphon 
  

   elongatum 
  Hilton, 
  but 
  the 
  tarsus 
  is 
  subequal 
  to 
  the 
  propodus 
  in 
  this 
  

   species 
  instead 
  of 
  considerably 
  longer 
  as 
  in 
  Hilton's 
  species, 
  the 
  com- 
  

   pound 
  spines 
  of 
  the 
  oviger 
  are 
  coarsely 
  instead 
  of 
  finely 
  toothed, 
  and 
  

   the 
  conformation 
  of 
  the 
  chela 
  is 
  noticeably 
  different. 
  The 
  locality 
  

   from 
  which 
  this 
  species 
  was 
  taken 
  is 
  north 
  of 
  Honshu. 
  

  

  I 
  have 
  named 
  this 
  species 
  for 
  my 
  friend 
  and 
  colleague 
  Dr. 
  Gordon 
  

   Gunter, 
  who 
  listened 
  to 
  me 
  patiently 
  while 
  this 
  report 
  was 
  in 
  prepa- 
  

   ration. 
  

  

  NYMPHON 
  HETEROSPINUM, 
  new 
  species 
  

  

  FIGUBE 
  27 
  

  

  Holotype 
  (ovigerom 
  male). 
  — 
  U.S.N.M. 
  No. 
  80589, 
  Albatross 
  sta- 
  

   tion 
  5050, 
  latitude 
  38m'30'' 
  K, 
  142°08' 
  E., 
  266 
  fathoms, 
  37.9° 
  F., 
  

   October 
  10, 
  1906. 
  

  

  Description. 
  — 
  Trunk 
  elongate, 
  lateral 
  processes 
  separated 
  by 
  

   slightly 
  more 
  than 
  their 
  own 
  diameter. 
  Neck 
  short, 
  thick. 
  Eye 
  tu- 
  

   bercle 
  about 
  twice 
  as 
  high 
  as 
  broad, 
  with 
  a 
  sharp 
  forward-directed 
  

   point, 
  eyes 
  rather 
  small 
  but 
  well 
  pigmented, 
  about 
  halfway 
  between 
  

   base 
  and 
  tip 
  of 
  tubercle. 
  

  

  Proboscis 
  about 
  twice 
  as 
  long 
  as 
  neck, 
  heavy, 
  cylindrical, 
  but 
  

   slightly 
  expanded 
  at 
  tip, 
  and 
  broadly 
  rounded. 
  

  

  Abdomen 
  erect, 
  almost 
  vertical, 
  not 
  quite 
  as 
  long 
  as 
  last 
  lateral 
  

   process. 
  

  

  