﻿PYCNOGONIDA 
  FROM 
  JAPANESE 
  WATERS 
  — 
  HEDGPETH 
  

  

  289 
  

  

  Third 
  leg 
  short, 
  knobby 
  and 
  spinose. 
  The 
  genital 
  process 
  is 
  on 
  the 
  

   ventral 
  distal 
  corner 
  of 
  the 
  second 
  coxae 
  of 
  the 
  last 
  two 
  pairs 
  of 
  legs, 
  

   about 
  two-thirds 
  as 
  long 
  as 
  the 
  width 
  of 
  the 
  coxal 
  joint. 
  There 
  is 
  a 
  

   tuft 
  of 
  short 
  heavy 
  spines 
  at 
  the 
  tip. 
  Tarsus 
  short, 
  propodus 
  curved, 
  

   with 
  three 
  large 
  spines 
  on 
  heel. 
  Terminal 
  claw 
  broad, 
  half 
  as 
  long 
  as 
  

   propodus. 
  Auxiliary 
  claw 
  more 
  than 
  half 
  as 
  long 
  as 
  terminal 
  claw. 
  

  

  Oviger 
  rather 
  heavy, 
  9-jointed, 
  with 
  a 
  heavy 
  reversed 
  spine 
  at 
  the 
  

   base 
  of 
  the 
  sixth 
  segment, 
  a 
  tuft 
  of 
  long 
  spines 
  on 
  the 
  outer 
  distal 
  edge 
  

   of 
  the 
  seventh, 
  and 
  two 
  denticulate 
  spines 
  on 
  the 
  eighth 
  segment, 
  three 
  

   on 
  the 
  ninth. 
  

  

  MeasureTnents. 
  — 
  As 
  follows 
  : 
  

  

  Mm. 
  

  

  Proboscis 
  1. 
  25 
  

  

  Trunk 
  1.50 
  

  

  Second 
  lateral 
  process, 
  width 
  — 
  1.4 
  

   Abdomen 
  . 
  6 
  

  

  Third 
  leg 
  : 
  Mm. 
  

  

  Coxae 
  1. 
  

  

  Femur 
  1.0 
  

  

  First 
  tibia 
  .98 
  

  

  Second 
  tibia 
  .8 
  

  

  Tarsus 
  . 
  1 
  

  

  Propodus 
  . 
  75 
  

  

  Terminal 
  claw 
  . 
  4 
  

  

  Remarks. 
  — 
  This 
  species 
  appears 
  to 
  be 
  close 
  to 
  A. 
  lithe 
  Losina- 
  

   Losinsky 
  but 
  differs 
  from 
  that 
  species 
  in 
  having 
  dorsal 
  trunk 
  tubercles. 
  

   Other 
  species 
  with 
  tall 
  dorsal 
  trunk 
  tubercles 
  are 
  A. 
  cussimilis 
  (Has- 
  

   well) 
  and 
  A. 
  wilsoni 
  ( 
  Schimkewitsch) 
  , 
  from 
  which 
  it 
  differs 
  in 
  the 
  

   possession 
  of 
  the 
  peculiar 
  birfurcate 
  tubercles 
  on 
  the 
  anterior 
  corners 
  

   of 
  the 
  lateral 
  processes. 
  

  

  ACHELIA 
  species 
  

  

  Albatross 
  shore 
  trip, 
  Milne 
  Bay, 
  Shimushiru, 
  June 
  23, 
  1906, 
  1 
  

   immature. 
  

  

  This 
  appears 
  to 
  be 
  the 
  immature 
  form 
  of 
  one 
  of 
  the 
  compact 
  spinose 
  

   species. 
  The 
  fingers 
  of 
  the 
  chelae 
  are 
  straight 
  and 
  the 
  specimen 
  

   differs 
  in 
  other 
  respects 
  from 
  the 
  immature 
  form 
  from 
  the 
  Kuriles 
  

   ascribed 
  by 
  Ohshima 
  to 
  A. 
  alaskensis. 
  It 
  may 
  be 
  the 
  Oriental 
  or 
  

   Japanese 
  variety 
  of 
  A. 
  echinata. 
  

  

  Genus 
  AMMOTHELLA 
  Verrill, 
  1900 
  

  

  AMMOTHELLA 
  PROFUNDA, 
  new 
  species 
  

   Figure 
  42 
  

  

  Holotype 
  {female).— 
  \J.^:^M. 
  No. 
  80567, 
  Albatross 
  station 
  5083, 
  

   latitude 
  34°04'20'' 
  N., 
  longitude 
  137°57'30" 
  E., 
  624 
  fathoms, 
  38.1° 
  F., 
  

   October 
  20, 
  1906. 
  

  

  Description. 
  — 
  Trunk 
  oval 
  in 
  outline, 
  segmentation 
  not 
  marked 
  by 
  

   suture 
  lines; 
  the 
  lateral 
  processes 
  diverging. 
  Integument 
  lightly 
  

  

  