﻿A. 
  E. 
  Verrill 
  — 
  Echinoderms 
  of 
  Northeastern 
  America. 
  133 
  

  

  PORCELLAXASTER 
  CLERULEUS 
  ThomS. 
  

  

  W. 
  Thomson, 
  Yoy. 
  Challenger, 
  Atlantic, 
  vol. 
  i, 
  p. 
  378, 
  figs. 
  9 
  7, 
  98, 
  1877; 
  

   Sladen, 
  Yoy. 
  Chall., 
  vol. 
  xxx, 
  p. 
  134, 
  pi. 
  20, 
  figs. 
  1 
  to 
  7, 
  1839 
  ; 
  Yerrill, 
  Expl. 
  

   by 
  the 
  Albatross 
  in 
  1883, 
  p. 
  543, 
  pi. 
  14, 
  figs. 
  40, 
  41, 
  1885. 
  

  

  B. 
  range, 
  662 
  to 
  1917 
  fath. 
  Most 
  common 
  from 
  900 
  to 
  1500 
  

   fath. 
  Taken 
  at 
  42 
  stations 
  between 
  1ST. 
  lat. 
  41° 
  28' 
  and 
  37° 
  50'. 
  

   Found 
  also 
  off 
  the 
  European 
  coasts. 
  

  

  This 
  genus 
  is 
  found 
  at 
  great 
  depths 
  in 
  all 
  the 
  oceans. 
  About 
  

   10 
  species 
  are 
  known. 
  

  

  Family 
  Astropectinid^e 
  (Gray, 
  1840) 
  emended. 
  

  

  Astropecten 
  Americanus 
  Yerrill. 
  

  

  Archaster 
  Americanus 
  Yerrill. 
  this 
  Journal, 
  vol. 
  xx, 
  p. 
  402, 
  1880. 
  

   Astropecten 
  Americanus 
  Yerrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  255, 
  1894. 
  

  

  B. 
  range, 
  43 
  to 
  296 
  fath. 
  Most 
  common 
  from 
  63 
  to 
  150 
  fath. 
  

   Taken 
  by 
  the 
  U. 
  S. 
  Fish 
  Comm. 
  at 
  72 
  stations, 
  from 
  N. 
  lat. 
  

   40° 
  23' 
  to 
  35° 
  38'. 
  Allied 
  species 
  occur 
  in 
  all 
  seas/ 
  A. 
  mesacu- 
  

   tus 
  SI., 
  from 
  the 
  East 
  Atlantic, 
  seems 
  to 
  be 
  the 
  nearest 
  related. 
  

  

  Astropecten 
  vestitus 
  Liitken. 
  

  

  Asterias 
  vestita 
  Say, 
  Journ. 
  Philad. 
  Acad., 
  vol. 
  v, 
  p. 
  143, 
  1825. 
  

  

  B. 
  range, 
  shallow 
  water. 
  Cape 
  May 
  (Say.). 
  It 
  is 
  not 
  uncom- 
  

   mon 
  farther 
  south. 
  

  

  Astropecten 
  articulatus 
  Mull, 
  and 
  Trosch. 
  

  

  Asterias 
  articulatus 
  Say, 
  Journ. 
  Acad. 
  Nat. 
  Sci., 
  Philad., 
  vol. 
  v, 
  p. 
  141, 
  1825. 
  

   Astropecten 
  articulatus 
  Mull, 
  and 
  Trosch., 
  Syst. 
  Aster., 
  p. 
  72, 
  1842; 
  A. 
  Agassiz, 
  

   North 
  American 
  Starfishes, 
  p. 
  114, 
  pi. 
  19, 
  figs. 
  1-8, 
  1877. 
  

  

  B. 
  range, 
  4 
  to 
  43 
  fath. 
  Taken 
  at 
  several 
  stations 
  off 
  Cape 
  

   Hatteras, 
  and 
  as 
  far 
  north 
  as 
  35° 
  42'. 
  Common 
  farther 
  south, 
  

   in 
  shallow 
  water. 
  West 
  Indies. 
  

  

  Leptoptychaster 
  arcticus 
  Sladen. 
  

  

  Astropecten 
  arcticus 
  M. 
  Sars, 
  Reise 
  Lofoden 
  og 
  Finmarken, 
  Nyt. 
  Mag. 
  Nat., 
  

  

  vol. 
  vi, 
  p. 
  161, 
  1851. 
  

   Archaster 
  arcticus 
  Verrill, 
  this 
  Journal, 
  vol. 
  xvi, 
  p. 
  214, 
  1878. 
  

   Leptopity 
  chaster 
  arcticus, 
  var. 
  elongatus, 
  Sladen, 
  op. 
  cit. 
  , 
  p. 
  189. 
  

   Leptoptychaster 
  arcticus 
  Sladen, 
  op. 
  cit., 
  p. 
  189 
  ; 
  Yerrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  

  

  xvii, 
  p. 
  255, 
  1894. 
  

  

  B. 
  range, 
  50 
  to 
  965 
  fath. 
  (1350 
  fath., 
  Sladen). 
  Most 
  common 
  

   in 
  85 
  to 
  200 
  fathoms 
  ; 
  rare 
  at 
  greater 
  depths. 
  Taken 
  at 
  23 
  

   stations, 
  from 
  N. 
  lat. 
  45° 
  14' 
  to 
  38° 
  -29'. 
  It 
  always 
  occurred 
  in 
  

   small 
  numbers. 
  It 
  is 
  also 
  found 
  off 
  the 
  northern 
  coasts 
  of 
  

   Europe. 
  Two 
  closely 
  allied 
  species 
  are 
  found 
  in 
  the 
  Antarctic 
  

   Ocean. 
  

  

  Psil 
  aster 
  Florae 
  Yerrill. 
  

  

  Archaster 
  Flora 
  Yerrill, 
  this 
  Journal, 
  vol. 
  xvi, 
  p. 
  372, 
  1878; 
  Expl. 
  by 
  the 
  

   Albatross, 
  in 
  Ann. 
  Rep. 
  U. 
  S. 
  Com'r 
  Fish 
  and 
  Fisheries, 
  vol. 
  xi, 
  p. 
  542, 
  pi. 
  13, 
  

   fig. 
  36. 
  1885. 
  

   Fsilaster 
  Flora 
  Yerrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  255, 
  1894. 
  

  

  