﻿202 
  A. 
  E. 
  Verrill 
  — 
  Echinoderms 
  of 
  Northeastern 
  America. 
  

  

  Pteraster 
  militaris 
  Mull, 
  and 
  Trosch. 
  

  

  Asterias 
  militaris 
  Miiller, 
  Zool. 
  Dan. 
  Prod., 
  p. 
  234, 
  1*776; 
  Rathke, 
  Zool. 
  Dan., 
  

   vol. 
  iv, 
  p. 
  L4, 
  pi. 
  131, 
  1806. 
  

  

  Pteraster 
  militaris 
  Miiller 
  and 
  Troschel, 
  Syst., 
  Aster., 
  Supl., 
  p. 
  128, 
  pi. 
  6, 
  fig. 
  1, 
  

   1842; 
  Stimpson, 
  Invert. 
  Grand 
  Manan, 
  p. 
  15, 
  1853; 
  M. 
  Sars, 
  Overs. 
  Norges 
  

   Echinod., 
  p. 
  48, 
  pi. 
  3, 
  figs. 
  8, 
  9, 
  pi. 
  4, 
  figs. 
  4-6, 
  1861 
  ; 
  Duncan 
  and 
  Sladen, 
  

   op. 
  cit., 
  p. 
  46, 
  pi. 
  3, 
  figs. 
  13-16. 
  Danielssen 
  and 
  Koren, 
  op. 
  cit., 
  p. 
  70, 
  pi. 
  

   13, 
  figs. 
  18, 
  19, 
  1884; 
  Verrill, 
  Expl. 
  by 
  the 
  Albatross, 
  p. 
  541, 
  pi. 
  13, 
  fig. 
  35, 
  

   1885. 
  

  

  B. 
  range, 
  10 
  to 
  200 
  fath. 
  From 
  10 
  to 
  530 
  fath. 
  (Sladen). 
  

   Taken 
  at 
  many 
  stations 
  from 
  N. 
  lat. 
  47° 
  29' 
  to 
  Massachusetts 
  

   Bay. 
  Common 
  in 
  the 
  Bay 
  of 
  Fundy 
  in 
  10 
  to 
  50 
  fath. 
  Also 
  

   European 
  and 
  Arctic. 
  

  

  Temnaster 
  hexactis 
  Verrill. 
  

  

  Pteraster 
  {Temnaster) 
  hexactis 
  Verrill, 
  Proc. 
  Nat. 
  Mus., 
  vol. 
  xvii, 
  p. 
  175, 
  1894. 
  

  

  B. 
  range, 
  57 
  fath. 
  Only 
  one 
  specimen 
  taken, 
  N. 
  lat. 
  43° 
  05'. 
  

   No 
  allied 
  species 
  is 
  known. 
  

  

  DlPLOPTERASTER 
  MULTIPES 
  Verrill. 
  

  

  Pteraster 
  multipes 
  M. 
  Sars, 
  Vidensk. 
  Selskabs. 
  Eorhandl., 
  1865, 
  p. 
  200 
  ; 
  

   Fauna 
  Litt. 
  Norvegiee, 
  p. 
  65, 
  pi. 
  8, 
  figs. 
  1-17, 
  1877. 
  

  

  Diplopteraster 
  multipes 
  Verril], 
  this 
  Journal, 
  vol. 
  xx, 
  p. 
  400, 
  1880 
  ; 
  Ann. 
  

   Keport 
  U. 
  S. 
  Fish 
  Comm., 
  for 
  1882, 
  vol. 
  x, 
  p. 
  659, 
  1884; 
  op. 
  cit., 
  vol. 
  xi, 
  

   Expl. 
  by 
  the 
  Albatross 
  in 
  1883, 
  p. 
  542, 
  pi. 
  14, 
  fig. 
  43, 
  1885. 
  

  

  Retasterf 
  multipes 
  SI., 
  op. 
  cit, 
  pp. 
  477, 
  478, 
  800, 
  1889. 
  

  

  B. 
  range, 
  67 
  to 
  640 
  fath. 
  Most 
  commom 
  between 
  100 
  and 
  

   300 
  fathoms. 
  Taken 
  at 
  many 
  stations 
  between 
  !N. 
  lat. 
  44° 
  26' 
  

   and 
  37° 
  07' 
  50". 
  Occurs 
  also 
  off 
  the 
  Norwegian 
  coast. 
  

  

  The 
  two 
  following 
  species, 
  described 
  by 
  Mr. 
  Sladen 
  from 
  

   the 
  southern 
  hemisphere, 
  appear 
  to 
  belong 
  to 
  this 
  genus 
  and 
  

   to 
  be 
  closely 
  allied 
  to 
  our 
  species 
  : 
  

  

  Diplopteraster 
  verrucosus 
  V. 
  = 
  Retaster 
  verrucosus 
  SI., 
  Magellan 
  

  

  Str., 
  55 
  fath. 
  

   D. 
  peregrinator 
  V. 
  = 
  Retaster 
  peregrinator 
  SI., 
  off 
  Kerguelen 
  I., 
  

  

  127 
  fath. 
  

  

  These 
  have 
  the 
  ambalacral 
  feet 
  in 
  four 
  rows 
  and 
  the 
  broad, 
  

   thick, 
  fleshy 
  actinal 
  membrane 
  characteristic 
  of 
  this 
  genus. 
  

  

  Lophopteraster, 
  gen. 
  nov. 
  

  

  Form 
  and 
  general 
  appearance 
  as 
  in 
  Pteraster, 
  from 
  which 
  

   it 
  differs 
  chiefly 
  in 
  having 
  a 
  very 
  prominent, 
  solid 
  crest 
  or 
  

   keel-like 
  prominence 
  on 
  the 
  center 
  of 
  each 
  jaw 
  ; 
  it 
  forms 
  

   the 
  inner 
  angle 
  of 
  the 
  jaw, 
  separating 
  the 
  two 
  groups 
  of 
  

   oral 
  spines 
  in 
  the 
  middle. 
  The 
  latter 
  are 
  otherwise 
  webbed 
  

   together. 
  Two 
  small, 
  actinal 
  jaw-spines 
  on 
  each 
  side. 
  Actinal 
  

   radial 
  spines 
  well 
  developed. 
  Adambulacral 
  spines 
  webbed. 
  

   Supradorsal 
  membrane 
  nearly 
  as 
  in 
  Pteraster. 
  Definite, 
  dor- 
  

   sal 
  interradial 
  channels. 
  

  

  