﻿NO. 
  1946. 
  PACIFIC 
  MEDUSAE 
  AND 
  SIPHONOPHORAE—BIOELOW. 
  17 
  

  

  Genus 
  CATABLEMA 
  Haeckel, 
  1879. 
  Maas, 
  1904 
  (Bigelo^Ar 
  

  

  1909r). 
  

  

  The 
  three 
  "species" 
  listed 
  in 
  the 
  genus 
  by 
  Haeckel, 
  vesicaria 
  A. 
  

   Agassiz, 
  campanula 
  Haeckel, 
  and 
  eurystoma 
  Haeckel, 
  are 
  undoubtedly 
  

   identical, 
  as 
  Maas 
  (1904?>), 
  Browne 
  (1910), 
  and 
  I 
  (1909c) 
  have 
  already 
  

   pointed 
  out. 
  Vesicaria 
  and 
  campanula 
  are 
  successive 
  stages 
  in 
  

   development 
  ; 
  the 
  only 
  characters 
  separating 
  them 
  are 
  that 
  the 
  former 
  

   has 
  fewer 
  tentacles, 
  and 
  usually 
  has 
  ocelli; 
  but 
  the 
  first 
  is 
  a 
  growth 
  

   character, 
  while 
  I 
  have 
  myself 
  found 
  that 
  the 
  ocelli 
  of 
  vesicaria 
  often 
  

   disappear 
  with 
  preservation 
  (campanula 
  was 
  based 
  on 
  alcoholic 
  

   material). 
  Eurystoma, 
  with 
  rudimentary 
  stomach, 
  is 
  apparently 
  

   only 
  an 
  abnormality. 
  Mayer 
  retains 
  all 
  three 
  as 
  distinct 
  species 
  

   (putting 
  them 
  in 
  "Turris"); 
  but 
  gives 
  no 
  discussion 
  of 
  them. 
  

  

  Browne 
  (1910) 
  has 
  recently 
  added 
  another 
  species, 
  weldoni, 
  to 
  the 
  

   genus, 
  from 
  the 
  Antarctic. 
  But 
  this 
  form 
  has 
  gonads 
  of 
  the 
  Neoturris^ 
  

   type, 
  and 
  therefore 
  does 
  not 
  fall 
  in 
  Catablema 
  as 
  here 
  defined. 
  

  

  The 
  present 
  collection 
  contains 
  a 
  considerable 
  series 
  of 
  C. 
  vesicaria 
  

   from 
  Bering 
  Sea 
  which 
  are 
  perhaps 
  sufficiently 
  distinct 
  from 
  Atlantic 
  

   specimens 
  to 
  be 
  noted 
  as 
  a 
  local 
  variety. 
  There 
  are 
  likewise 
  four 
  

   specimens 
  which 
  are 
  distinguished 
  from 
  vesicaria 
  by 
  having 
  upward 
  

   of 
  three 
  times 
  as 
  many 
  tentacles 
  in 
  both 
  yoimg 
  and 
  adult; 
  by 
  their 
  

   large 
  size, 
  and 
  by 
  the 
  form 
  of 
  the 
  tentacular 
  bulbs. 
  Comparison 
  

   with 
  considerable 
  series 
  of 
  the 
  latter, 
  both 
  Atlantic 
  and 
  Pacific, 
  shows 
  

   that 
  the 
  differences 
  are 
  sufiicient 
  to 
  separate 
  them 
  specifically. 
  A 
  

   Catablema 
  with 
  "many 
  hundred" 
  tentacles 
  has 
  been 
  briefly 
  described 
  

   by 
  Kishinouye 
  (1910) 
  from 
  the 
  Kurile 
  Islands 
  as 
  C. 
  multicirrata, 
  and 
  

   no 
  doubt 
  the 
  four 
  Albatross 
  examples 
  belong 
  to 
  it. 
  

  

  CATABLEMA 
  VESICARIA 
  A. 
  Agassiz, 
  var. 
  NODULOSA, 
  new 
  variety 
  

   Plate 
  1, 
  figs. 
  8, 
  9. 
  

  

  Dutch 
  Harbor, 
  May 
  25, 
  surface; 
  14 
  specimens. 
  

  

  Type.— 
  C&t. 
  No. 
  31053, 
  U.S.N.M. 
  

  

  In 
  general 
  form 
  the 
  specimens 
  resemble 
  the 
  Atlantic 
  examples 
  of 
  

   C. 
  vesicaria 
  which 
  I 
  have 
  studied, 
  having 
  the 
  same 
  thick, 
  rounded 
  

   gelatinous 
  swelling 
  at 
  the 
  aboral 
  pole. 
  But 
  the 
  gonads 
  and 
  tentacle 
  

   number 
  are 
  rather 
  different 
  from 
  the 
  usual 
  type 
  of 
  the 
  latter, 
  though 
  

   probably 
  lying 
  within 
  its 
  extreme 
  range 
  of 
  variation. 
  

  

  The 
  gonads, 
  as 
  defined 
  by 
  A. 
  Agassiz 
  (1865), 
  by 
  Maas 
  (1904&), 
  and 
  

   by 
  the 
  writer 
  (1909c), 
  consist 
  of 
  a 
  series 
  of 
  vertical 
  folds 
  in 
  each 
  

   interradius, 
  becoming 
  oblique 
  or 
  even 
  transverse 
  close 
  to 
  each 
  per- 
  

   radius, 
  and 
  in 
  two 
  of 
  the 
  North 
  Atlantic 
  specimens 
  I 
  have 
  observed 
  

   a 
  few 
  irregular 
  knobs 
  and 
  swellings 
  near 
  the 
  lower 
  end 
  of 
  the 
  manu- 
  

   brium. 
  In 
  the 
  Bering 
  Sea 
  series 
  there 
  is 
  the 
  same 
  series 
  of 
  hori- 
  

  

  ' 
  Keoturris, 
  new 
  name, 
  Hartlaub, 
  1911, 
  p. 
  

   -Proc.N.M.vol.44— 
  13 
  2 
  

  

  