﻿NO. 
  1946. 
  PA 
  CIFIC 
  MED 
  U8AE 
  AND 
  SIPHONOPHORAE—BIOELO 
  W. 
  79 
  

  

  Family 
  AGALMIDAE 
  Brandt, 
  1835. 
  

   Genus 
  AGALMA 
  Eschseholtz, 
  1825. 
  

   AGALMA 
  OKENI 
  Eschseholtz. 
  

   Agalma 
  oheni 
  Eschscholtz, 
  1825, 
  p. 
  744, 
  pi. 
  5, 
  fig. 
  17. 
  

  

  (For 
  synonymy, 
  see 
  Bigelow, 
  1911&, 
  p. 
  277.) 
  

  

  Station 
  4920, 
  300-0 
  fathoms; 
  a 
  large 
  colony 
  (50 
  mm. 
  long) 
  with 
  

   9 
  cormidia. 
  The 
  siphosome 
  is 
  in 
  excellent 
  condition; 
  but 
  the 
  necto- 
  

   phores 
  are 
  all 
  detached 
  and 
  loose 
  in 
  the 
  bottle. 
  

  

  Station 
  4978; 
  a 
  fragmentary 
  colony. 
  

  

  0-Shima 
  Harbor; 
  an 
  example 
  30 
  nyn. 
  long, 
  with 
  5 
  cormidia, 
  in 
  

   fair 
  condition. 
  

  

  Tliis 
  widely 
  distributed 
  and 
  easily 
  recognized 
  species 
  has 
  usually 
  

   been 
  known 
  either 
  as 
  Crijstallomia 
  polijgonata 
  Dana 
  or 
  Crystallodes 
  

   vitreus 
  Haeckel. 
  It 
  has 
  been 
  described 
  in 
  detail 
  by 
  the 
  latter 
  author, 
  

   by 
  Lens 
  and 
  Van 
  Riemsdijk 
  (1908), 
  and 
  by 
  me 
  in 
  a 
  previous 
  paper 
  

   (19116), 
  where 
  its 
  relationship 
  and 
  history 
  are 
  discussed. 
  

  

  The 
  outlines 
  of 
  the 
  nectophores 
  and 
  bracts 
  of 
  this 
  species 
  are 
  so 
  

   characteristic 
  that 
  it 
  is 
  not 
  likely 
  to 
  be 
  confused 
  with 
  any 
  other 
  

   Agalmid, 
  and 
  the 
  identity 
  of 
  the 
  present 
  series 
  rests 
  further 
  on 
  com- 
  

   parison 
  with 
  large 
  series 
  from 
  the 
  tropical 
  Atlantic, 
  tropical 
  Pacific, 
  

   and 
  Philippine 
  waters. 
  

  

  Family 
  RHODALIIDAE, 
  Haeckel, 
  1888. 
  

   Family 
  RHODALIIDAE 
  Bigelow, 
  19116. 
  

   Genus 
  ARCHANGELOPSIS 
  Lens 
  and 
  Van 
  Riemsdijk, 
  1908. 
  

  

  ARCHANGELOPSIS 
  TYPICA 
  Lens 
  and 
  Van 
  Reimsdijk. 
  

  

  Plate 
  6, 
  figure 
  7. 
  

  

  Archangelopsis 
  typica 
  Lens 
  and 
  Van 
  Riemsdijk, 
  1908, 
  p. 
  91, 
  pi. 
  17, 
  pi. 
  18, 
  figs. 
  

   137-140.— 
  Bigelow, 
  19116, 
  p. 
  350. 
  

  

  Station 
  490.3, 
  139-0 
  fathoms; 
  1 
  specimen, 
  in 
  good 
  condition 
  except 
  

   that 
  all 
  the 
  nectophores 
  but 
  the 
  youngest 
  have 
  been 
  detached. 
  

  

  I 
  mentioned 
  this 
  specimen 
  in 
  my 
  report 
  on 
  Eastern 
  Pacific 
  Siphono- 
  

   phores 
  (1911&, 
  p. 
  303), 
  but 
  it 
  came 
  to 
  hand 
  too 
  late 
  for 
  me 
  to 
  give 
  an 
  

   account 
  of 
  it 
  in 
  that 
  work. 
  

  

  Lens 
  and 
  Van 
  Riemsdijk 
  (1908) 
  have 
  given 
  a 
  good 
  account 
  of 
  the 
  

   general 
  anatomy 
  of 
  this 
  interesting 
  genus, 
  particularly 
  of 
  the 
  auro- 
  

   phore, 
  but 
  as 
  their 
  specimens 
  were 
  all 
  more 
  or 
  less 
  fragmentary, 
  

   especially 
  with 
  regard 
  to 
  the 
  cormidia, 
  a 
  description 
  of 
  the 
  present 
  

   example 
  will 
  not 
  be 
  amiss. 
  

  

  The 
  general 
  structure 
  of 
  the 
  specunen, 
  mth 
  large 
  pneumatophore, 
  

   nectosome 
  with 
  longitudinal 
  muscular 
  lamellae 
  which 
  bore 
  the 
  necto- 
  

   phores 
  in 
  life, 
  and 
  siphosome 
  in 
  the 
  form 
  of 
  a 
  thin-walled 
  bag, 
  agrees 
  

  

  