﻿A. 
  E. 
  Verrill 
  — 
  Echinoderms 
  of 
  Northeastern 
  America. 
  131 
  

   Allied 
  species 
  are 
  found 
  in 
  all 
  the 
  great 
  oceans. 
  

  

  Pontaster 
  sepitus 
  Verrill. 
  

  

  Archaster 
  sepitus 
  Verrill, 
  this 
  Journal, 
  vol. 
  xxix, 
  p. 
  151, 
  Feb., 
  1885 
  ; 
  Expl. 
  by 
  

  

  the 
  Albatross 
  in 
  1883, 
  pp. 
  519, 
  543, 
  1885. 
  

   Pontaster 
  sepitics 
  Verrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  247, 
  1894. 
  

  

  B. 
  range, 
  368 
  to 
  858 
  fath. 
  

  

  Taken 
  at 
  several 
  stations 
  between 
  K 
  lat. 
  41° 
  53' 
  and 
  39° 
  40 
  7 
  . 
  

  

  Dytaster 
  grandis 
  Verrill. 
  

  

  Archaster 
  grandis 
  Verrill, 
  this 
  Journal, 
  vol. 
  xxviii, 
  p. 
  218, 
  1884. 
  

  

  Dytaster 
  madreporifer 
  Sladen, 
  op. 
  cit., 
  p. 
  TO, 
  pi. 
  3, 
  figs. 
  3, 
  4; 
  pi. 
  32, 
  figs. 
  5, 
  6, 
  

  

  1889. 
  

   Dytaster 
  grandis 
  Verrill, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  248, 
  1894. 
  

  

  B. 
  range, 
  475 
  to 
  2620 
  fath. 
  Most 
  common 
  between 
  1200 
  and 
  

   1600 
  fathoms. 
  Taken 
  at 
  36 
  stations 
  between 
  N. 
  lat. 
  41° 
  13' 
  

   and 
  36° 
  34'. 
  

  

  The 
  genus 
  Dytaster 
  Sladen 
  is 
  found 
  in 
  all 
  the 
  great 
  oceans. 
  

   Mr. 
  Sladen 
  described 
  seven 
  species, 
  none 
  of 
  them 
  from 
  less 
  

   than 
  800 
  fathoms. 
  

  

  D. 
  exilis 
  var. 
  carinata 
  SI., 
  op. 
  cit., 
  p. 
  69, 
  was 
  taken 
  off 
  Mary- 
  

   land, 
  in 
  1700 
  fathoms. 
  The 
  typical 
  D. 
  exilis 
  was 
  from 
  off 
  

   Valparaiso, 
  in 
  1375 
  fath. 
  1 
  have 
  not 
  been 
  able 
  to 
  satisfy 
  my- 
  

   self 
  that 
  the 
  var. 
  carinata 
  SI. 
  is 
  distinct 
  from 
  the 
  young 
  of 
  JD. 
  

   grandis. 
  

  

  Plutonaster 
  Agassizii 
  Verrill. 
  

  

  Archaster 
  Agassizii 
  Verrill, 
  this 
  Journal, 
  vol. 
  xx, 
  p. 
  403, 
  1880. 
  

  

  Plutonaster 
  rigidus 
  Sladen, 
  op. 
  cit., 
  p. 
  91, 
  pi. 
  14, 
  figs. 
  3, 
  4; 
  pi. 
  15, 
  figs. 
  3, 
  4, 
  

  

  1889; 
  also 
  var. 
  semiarmata, 
  op. 
  cit., 
  p. 
  94. 
  

   Plutonaster 
  oifrons 
  (part) 
  Sladen, 
  op 
  cit., 
  p. 
  88, 
  1889 
  (very 
  young 
  example). 
  

   Plutonaster 
  Agassizii 
  Verrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  248, 
  1894. 
  

  

  B. 
  range, 
  182 
  to 
  1700 
  fath. 
  Most 
  common 
  in 
  300 
  to 
  1200 
  

   fathoms. 
  Taken 
  at 
  103 
  stations 
  between 
  N. 
  lat. 
  41° 
  53' 
  and 
  

   35° 
  45' 
  23". 
  

  

  Very 
  closely 
  related 
  to 
  Pontaster 
  hifrons 
  SI. 
  from 
  off 
  the 
  

   European 
  coasts, 
  and 
  to 
  Pontaster 
  intermedins 
  (Perrier 
  sp.), 
  

   of 
  the 
  West 
  Indian 
  region. 
  

  

  Mr. 
  Sladen 
  recorded 
  eight 
  species 
  of 
  this 
  genus 
  : 
  one 
  from 
  

   the 
  Mediterranean 
  ; 
  one 
  from 
  the 
  South 
  Pacific 
  ; 
  all 
  the 
  others 
  

   from 
  the 
  Atlantic. 
  Most 
  of 
  the 
  species 
  inhabit 
  only 
  great 
  

   depths. 
  

  

  Pseud 
  arch 
  aster 
  ixtermedius 
  Sladen. 
  

   Pseudarchaster 
  intermedius 
  Sladen, 
  Voyage 
  of 
  the 
  Challenger, 
  vol. 
  xxx, 
  p. 
  115, 
  

  

  pi. 
  19, 
  figs. 
  3, 
  4; 
  pi. 
  42, 
  figs. 
  5, 
  6, 
  1889 
  ; 
  Verrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  

  

  p. 
  249, 
  1894. 
  

   Archaster 
  Parelii 
  Verrill, 
  this 
  Journal, 
  vol. 
  vii, 
  p. 
  500, 
  1874 
  (not 
  Diiben 
  and 
  

  

  Koren); 
  vol. 
  xxiii, 
  p. 
  140, 
  1882; 
  Rep. 
  U. 
  S. 
  Com'r 
  Fish 
  and 
  Fisheries, 
  vol. 
  

  

  xi, 
  p. 
  543, 
  pi. 
  13, 
  fig. 
  37, 
  1885 
  (var. 
  with 
  narrow 
  rays). 
  

  

  