﻿234 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  species 
  identified 
  from 
  the 
  region. 
  Several 
  other 
  genera 
  are 
  equally 
  

   well 
  represented 
  in 
  the 
  Albatross 
  collections, 
  which 
  include 
  7 
  species 
  

   of 
  Colossendeis 
  and 
  4 
  species 
  of 
  Pallenopsis. 
  Two 
  genera 
  that 
  might 
  

   be 
  expected 
  to 
  have 
  larger 
  representations, 
  Anoplodactylus 
  and 
  

   Achelia, 
  are 
  predominantly 
  littoral, 
  and 
  it 
  is 
  probable 
  that 
  study 
  of 
  

   existing 
  and 
  future 
  shore 
  collections 
  will 
  reveal 
  several 
  more 
  species 
  

   of 
  both 
  these 
  genera. 
  There 
  is 
  but 
  one 
  well-established 
  species 
  of 
  

   Anoplodactylus, 
  and 
  there 
  appear 
  to 
  be 
  2 
  more 
  species, 
  known 
  from 
  

   females 
  or 
  immature 
  forms, 
  and 
  there 
  are 
  7 
  or 
  8 
  species 
  of 
  Achelia. 
  

   There 
  are 
  at 
  least 
  14 
  species 
  of 
  this 
  latter 
  genus 
  on 
  the 
  Pacific 
  coast 
  

   of 
  North 
  America. 
  The 
  genus 
  Tanystylmn 
  is 
  represented 
  by 
  one 
  pre- 
  

   viously 
  undescribed 
  species, 
  which 
  is 
  evidently 
  rare, 
  whereas 
  there 
  are 
  

   two 
  species 
  on 
  the 
  California 
  coast 
  that 
  are 
  common 
  within 
  their 
  known 
  

   ranges. 
  However, 
  species 
  of 
  Tanystylum 
  are 
  very 
  small 
  and 
  may 
  

   have 
  been 
  overlooked. 
  The 
  dredge 
  collections 
  reveal 
  a 
  bewildering 
  

   array 
  of 
  species 
  of 
  the 
  topheavy 
  genus 
  Nyinphon., 
  increasing 
  the 
  num- 
  

   ber 
  of 
  species 
  known 
  from 
  Japanese 
  waters 
  to 
  16 
  or 
  17, 
  several 
  of 
  

   which 
  are 
  apparently 
  undescribed. 
  It 
  is 
  with 
  reluctance 
  that 
  I 
  pro- 
  

   pose 
  9 
  new 
  species 
  for 
  this 
  genus, 
  but 
  there 
  seems 
  to 
  be 
  no 
  help 
  for 
  it. 
  

   Nymphon 
  striatum, 
  described 
  from 
  Vladivostok 
  and 
  the 
  western 
  edge 
  

   of 
  the 
  Japanese 
  Sea, 
  is 
  not 
  represented 
  in 
  the 
  Albatross 
  collections, 
  and 
  

   apparently 
  has 
  a 
  restricted 
  range. 
  

  

  In 
  table 
  1 
  the 
  distribution 
  of 
  all 
  species 
  mentioned 
  as 
  occurring 
  

   in 
  Japanese 
  or 
  adjacent 
  waters 
  (from 
  Kamchatka 
  to 
  Okinawa), 
  in- 
  

   cluding 
  the 
  Sea 
  of 
  Okhotsk, 
  is 
  tabulated. 
  An 
  asterisk 
  indicates 
  those 
  

   species 
  represented 
  in 
  the 
  Albatross 
  and 
  other 
  National 
  Museum 
  

   collections 
  and 
  considered 
  in 
  the 
  systematic 
  section 
  of 
  this 
  report. 
  

  

  I 
  am 
  indebted 
  to 
  Dr. 
  Waldo 
  L. 
  Schmitt, 
  head 
  curator, 
  Department 
  

   of 
  Zoology, 
  of 
  the 
  United 
  States 
  National 
  Museum, 
  for 
  the 
  privilege 
  

   of 
  examining 
  these 
  collections 
  and 
  for 
  help 
  with 
  the 
  literature 
  and 
  

   many 
  other 
  details, 
  without 
  which 
  it 
  would 
  have 
  been 
  impossible 
  

   to 
  complete 
  this 
  paper. 
  

  

  ZOOGEOGRAPHICAL 
  REMARKS 
  

  

  The 
  general 
  location 
  of 
  the 
  Japanese 
  Archipelago 
  in 
  relation 
  to 
  the 
  

   physical 
  geography 
  of 
  i\\Q 
  North 
  Pacific 
  invites 
  comparison 
  with 
  the 
  

   eastern 
  coast 
  of 
  North 
  America 
  (cf. 
  Ekman 
  1935, 
  p. 
  230 
  ff., 
  and 
  Sver- 
  

   drup, 
  Johnson, 
  and 
  Fleming, 
  1942, 
  pp. 
  718-723). 
  Like 
  that 
  region, 
  

   Japan 
  lies 
  between 
  a 
  Boreal 
  Arctic 
  and 
  a 
  tropical 
  zone, 
  and 
  its 
  marine 
  

   fauna 
  is 
  an 
  intermingling 
  of 
  cold- 
  and 
  warm-water 
  species. 
  Like 
  the 
  

   eastern 
  coast 
  of 
  North 
  America, 
  it 
  is 
  warmed 
  by 
  a 
  northward 
  flowing 
  

   current 
  which 
  veers 
  eastward 
  (at 
  lat. 
  35° 
  N. 
  in 
  the 
  Pacific, 
  instead 
  of 
  

   40° 
  N., 
  as 
  in 
  the 
  Atlantic), 
  but 
  unlike 
  that 
  region 
  Japan 
  is 
  completely 
  

   surrounded 
  by 
  water 
  and 
  is 
  the 
  border 
  of 
  a 
  closed 
  inland 
  sea. 
  Another 
  

   important 
  difference 
  between 
  the 
  Japanese 
  coast 
  and 
  that 
  of 
  eastern 
  

  

  