﻿66 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  general 
  form, 
  with 
  the 
  type 
  specimen. 
  Fortunately 
  the 
  apical 
  por- 
  

   tion 
  of 
  the 
  subumbrella 
  of 
  each 
  is 
  intact, 
  and 
  shows 
  the 
  network 
  of 
  

   subumbral 
  canals, 
  which 
  is 
  the 
  chief 
  characteristic 
  of 
  the 
  species. 
  

   The 
  only 
  point 
  in 
  which 
  they 
  differ 
  from 
  the 
  eastern 
  Pacific 
  materia] 
  

   is 
  that 
  in 
  the 
  smaller 
  ncctophore 
  the 
  descending 
  arm 
  of 
  the 
  somato- 
  

   cyst 
  has 
  no 
  branches 
  and 
  the 
  ascending 
  one 
  only 
  6, 
  instead 
  of 
  about 
  

   18, 
  short 
  transverse 
  branches. 
  The 
  lateral 
  branches 
  of 
  the 
  dorso- 
  

   ventral 
  extension, 
  too, 
  are 
  fewer, 
  and 
  even 
  shorter. 
  But 
  there 
  is 
  no 
  

   reason 
  to 
  suppose 
  that 
  these 
  differences 
  are 
  anything 
  but 
  evidence 
  

   of 
  an 
  earlier 
  stage 
  in 
  development. 
  In 
  the 
  larger 
  nectophore 
  the 
  

   somatocyst 
  is 
  largely 
  destroyed. 
  

  

  The 
  four 
  bracts 
  captured 
  with 
  the 
  nectophores 
  agree 
  very 
  well 
  with 
  

   the 
  ones 
  collected 
  with 
  the 
  type 
  specimen 
  (1911&, 
  pi. 
  3, 
  fig. 
  6), 
  and 
  

   the 
  fact 
  that 
  the 
  bracts 
  of 
  this 
  type 
  have 
  now 
  been 
  taken 
  twice 
  with 
  

   the 
  nectophores 
  is 
  almost 
  proof 
  positive 
  that 
  they 
  belong 
  together. 
  

  

  Family 
  HIPPOPODIID^ 
  KolUker, 
  1853. 
  

   Genus 
  HIPPOPODIUS 
  Quoy 
  and 
  Gaimard, 
  1827. 
  

  

  HIPPOPODIUS 
  mPPOPUS 
  (Forskal). 
  

   Gleba 
  hippopus 
  ForskAl, 
  1775, 
  p. 
  14; 
  1776, 
  pi. 
  43, 
  fig. 
  E. 
  

  

  (For 
  synonymy, 
  see 
  Bigelow, 
  19116, 
  p. 
  208.) 
  

  

  Station 
  4951, 
  300-0 
  fathoms; 
  1 
  small 
  specimen 
  with 
  4 
  nectophores. 
  

   As 
  was 
  to 
  be 
  expected, 
  this 
  example 
  shows 
  nothing 
  to 
  separate 
  it 
  

   from 
  the 
  tropical 
  Pacific 
  or 
  Atlantic 
  specimens, 
  vnih. 
  which 
  I 
  have 
  

   compared 
  them. 
  

  

  Genus 
  VOGTIA 
  Kolliker, 
  1853. 
  

   VOGTIA 
  PENTACANTHA 
  Kolliker. 
  

   Plate 
  5, 
  figs. 
  7-9; 
  plate 
  6, 
  fig. 
  6. 
  

  

  Vofjtia 
  pentacantha 
  Kolliker, 
  18536, 
  p. 
  31, 
  pi. 
  8. 
  — 
  Keferstein 
  and 
  Ehlers, 
  

   18fil, 
  p. 
  23, 
  pi. 
  5, 
  figs. 
  12-15.— 
  Chun, 
  18976, 
  p. 
  35, 
  pi. 
  1, 
  figs. 
  11-14.— 
  Bige- 
  

   LO\v, 
  1911a, 
  p. 
  351; 
  19116, 
  p. 
  210. 
  

  

  Hippopodius 
  pentacanthus 
  Glaus, 
  1863, 
  p. 
  551, 
  pi. 
  47, 
  figs. 
  23-25.— 
  ^Sciin 
  eider, 
  

   1898, 
  p. 
  84. 
  

  

  Station 
  4763, 
  surface; 
  2 
  colonies 
  with 
  3 
  and 
  5 
  nectophores 
  and 
  39 
  

   loose 
  nectophores. 
  

  

  Station 
  4766, 
  300-0 
  fathoms; 
  1 
  colon}' 
  vnih. 
  11 
  nectophores, 
  in 
  

   excellent 
  condition. 
  

  

  Station 
  4785, 
  300-0 
  fathoms; 
  1 
  colony 
  with 
  3 
  nectophores 
  and 
  7 
  

   loose 
  nectophores. 
  

  

  Station 
  4797, 
  300-0 
  fathoms; 
  2 
  colonies 
  with 
  3 
  and 
  6 
  nectophores 
  

   and 
  9 
  loose 
  nectophores. 
  

  

  