﻿NO. 
  1946. 
  PACIFIC 
  MEDUSAE 
  AND 
  SIPHONOPHORAE—BIGELOW. 
  73 
  

  

  that 
  all 
  that 
  is 
  to 
  be 
  seen 
  is 
  a 
  crowded 
  mass 
  of 
  young 
  siphons 
  and 
  

   gonophores. 
  I 
  could 
  not 
  find 
  any 
  bracts, 
  but 
  the 
  material 
  is 
  not 
  

   good 
  enough 
  to 
  lay 
  any 
  stress 
  on 
  their 
  apparent 
  absence. 
  

  

  Subfamily 
  DIPHYOPSHST^E 
  Haeclcel, 
  1S88. 
  

   Genus 
  CHUNIPHYES 
  Lens 
  and 
  Van 
  Riemsdijk, 
  1908. 
  

  

  CHUNIPHYES 
  MULTIDENTATA 
  Lens 
  and 
  Van 
  Riemsdijk. 
  

  

  Chuniphyes 
  multidentata 
  Lens 
  and 
  Van 
  Riemsdijk, 
  1908, 
  p. 
  13, 
  pi. 
  1, 
  figs. 
  9-11; 
  

   pi. 
  2, 
  figs. 
  12-15.— 
  BiGELOW, 
  1911a, 
  p. 
  348; 
  19116, 
  p. 
  262, 
  pi. 
  8, 
  fig. 
  9; 
  pi. 
  10, 
  

   fig. 
  7; 
  pi. 
  12, 
  fig. 
  6. 
  

  

  Station 
  4759, 
  300-0 
  fathoms 
  ; 
  1 
  superior 
  and 
  1 
  inferior 
  nectophore, 
  

   respectively 
  23 
  and 
  29 
  mm. 
  long. 
  

  

  Station 
  4917, 
  361-0 
  fathoms; 
  1 
  inferior 
  nectophore, 
  about 
  20 
  mm, 
  

   long. 
  

  

  Station 
  4920, 
  300-0 
  fathoms; 
  1 
  superior 
  and 
  1 
  inferior 
  nectophore. 
  

  

  The 
  two 
  nectophores 
  from 
  station 
  4920 
  and 
  the 
  pair 
  from 
  station 
  

   4759 
  are 
  now 
  separate, 
  but 
  as 
  the 
  members 
  of 
  the 
  pairs 
  were 
  taken 
  

   together 
  it 
  is 
  probable 
  that 
  they 
  are 
  the 
  components 
  of 
  two 
  colonies. 
  

  

  The 
  material 
  is 
  in 
  good 
  condition, 
  and 
  as 
  it 
  shows 
  the 
  characteristic 
  

   conformation 
  of 
  the 
  two 
  nectophores 
  in 
  a 
  typical 
  fashion 
  (Bigelow, 
  

   19116) 
  it 
  can 
  be 
  identified 
  with 
  certainty. 
  The 
  superior 
  nectophores 
  

   are 
  interesting, 
  because 
  they 
  illustrate 
  the 
  variability 
  of 
  the 
  somato- 
  

   cyst. 
  I 
  have 
  already 
  pointed 
  out 
  (191 
  1&) 
  that 
  this 
  structure 
  is 
  

   dilated 
  shortly 
  above 
  its 
  point 
  of 
  origin, 
  and 
  then 
  contracts 
  oncp. 
  

   more 
  to 
  rim 
  as 
  a 
  narrow 
  tube 
  nearly 
  to 
  the 
  apex. 
  Li 
  one 
  eastern 
  

   Pacific 
  specimen 
  the 
  dilation 
  was 
  spherical 
  (1911&, 
  p. 
  263); 
  in 
  the 
  

   Biscayan 
  examples 
  it 
  consisted 
  of 
  two 
  short 
  transverse 
  horns, 
  one 
  on 
  

   either 
  side, 
  varying 
  in 
  size 
  in 
  difi'erent 
  specimens 
  (1911a, 
  p. 
  349). 
  In 
  

   one 
  of 
  the 
  present 
  examples, 
  hkewise, 
  the 
  dilation 
  projects 
  on 
  either 
  

   side 
  as 
  a 
  horn, 
  one 
  of 
  which 
  is 
  almost 
  twice 
  as 
  long 
  as 
  the 
  other, 
  but 
  

   in 
  the 
  other 
  the 
  swelHng 
  is 
  an 
  irregular 
  rhomboid, 
  its 
  lateral 
  corners 
  

   merely 
  somewhat 
  prolonged. 
  This 
  nearly 
  bridges 
  the 
  gap 
  between 
  

   specimens 
  with 
  "horns" 
  and 
  one 
  from 
  the 
  eastern 
  Pacific 
  with 
  a 
  

   spherical 
  dilation. 
  Unfortunately 
  the 
  stem 
  is 
  broken 
  short 
  off. 
  

  

  Genus 
  DIPHYES 
  Cuvier, 
  1817. 
  

  

  DIPHYES 
  TRUNCATA 
  Sars. 
  

  

  Plate 
  6, 
  figs. 
  3, 
  4, 
  5. 
  

  

  Diphyes 
  truncata 
  Sars, 
  1846, 
  p. 
  41, 
  pi. 
  7, 
  figs. 
  1-12. 
  

  

  Galeolaria 
  truncata 
  Huxley, 
  1859, 
  p. 
  38. 
  

  

  Diphyes 
  mbtiloides 
  Lens 
  and 
  Van 
  Riemsdijk, 
  1908, 
  p. 
  46, 
  pi. 
  7, 
  figs. 
  59-61. 
  

  

  Muggiaea 
  kochii 
  Bigelow, 
  1911a, 
  p. 
  340; 
  19116, 
  p. 
  188, 
  pi. 
  12, 
  figs. 
  2-4. 
  

  

  