﻿38 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  (1910), 
  have 
  about 
  as 
  many 
  tentacles 
  as 
  canals, 
  varying 
  to 
  one 
  side 
  

   or 
  the 
  other 
  to 
  a 
  greater 
  or 
  less 
  degree, 
  besides 
  a 
  large, 
  though 
  vari- 
  

   able, 
  number 
  of 
  tentacular 
  rudiments, 
  connected 
  with 
  fully 
  formed 
  

   tentacles 
  by 
  a 
  series 
  of 
  developmental 
  Stages, 
  But 
  forms 
  with 
  

   three 
  to 
  five 
  times 
  as 
  many 
  tentacles 
  as 
  canals 
  are 
  represented 
  in 
  

   the 
  Pacific 
  ('' 
  coerulescens^') 
  as 
  well 
  as 
  in 
  tlie 
  Atlantic 
  C'alhida"). 
  In 
  

   the 
  Atlantic 
  tlie 
  many-tentacled 
  form 
  is 
  known 
  only 
  from 
  cold 
  

   waters 
  (Labrador, 
  Newfoundland, 
  Norway), 
  but 
  tliis 
  is 
  not 
  true 
  of 
  

   the 
  Pacific. 
  

  

  In 
  the 
  present 
  paper 
  the 
  form 
  with 
  many 
  tentacles, 
  and 
  the 
  one 
  

   with 
  about 
  equal 
  numbers 
  of 
  tentacles 
  and 
  canals, 
  are 
  treated 
  pro- 
  

   visionally 
  as 
  varieties 
  of 
  Aequorea 
  aequorea. 
  

  

  AEQUOREA 
  AEQUOREA 
  (Forskal). 
  

  

  Medusa 
  aequorea 
  ForskIl, 
  1775, 
  p. 
  110; 
  177G, 
  pi. 
  32. 
  

  

  Medusa 
  patura 
  Modeer, 
  1791, 
  p. 
  32. 
  

  

  Aequorea 
  forskalea 
  Peron 
  and 
  Lesueur, 
  1809, 
  p. 
  330. 
  

  

  For 
  synonymy, 
  see 
  Mayer, 
  1910, 
  p. 
  325; 
  to 
  which 
  should 
  be 
  added 
  — 
  

  

  Aequorea 
  globosa 
  Eschscholtz, 
  1829, 
  p. 
  110, 
  pi. 
  10, 
  fig. 
  2.— 
  Maas, 
  1905, 
  p. 
  43, 
  pi. 
  8, 
  

  

  figs. 
  48-50. 
  

   Aequorea 
  albida 
  A. 
  Agassiz, 
  1862, 
  p. 
  359; 
  1865, 
  p. 
  110, 
  figs. 
  160-162. 
  

   Aequorea 
  norwegica 
  Browne, 
  1903, 
  p. 
  19, 
  pi. 
  5, 
  figs. 
  1-5. 
  

   Mesonema 
  victoria 
  Murbach 
  and 
  Shearer, 
  1902, 
  p. 
  72; 
  1903, 
  p. 
  180, 
  pi. 
  19, 
  figs. 
  

  

  1-2; 
  pi. 
  22, 
  fig. 
  2. 
  

   Aequorea 
  fioridana 
  Mayer, 
  1910, 
  p. 
  330, 
  pi. 
  43, 
  figs. 
  6, 
  7 
  (not 
  L. 
  Agassiz, 
  18()2, 
  p. 
  

  

  361.— 
  A. 
  Agassiz, 
  1865, 
  p. 
  67, 
  fig. 
  139). 
  

  

  This 
  species 
  has 
  universally 
  been 
  called 
  ■forskalea, 
  following 
  Peron 
  

   and 
  Lesueur 
  (1809), 
  but 
  this 
  name 
  was 
  expressl}^ 
  given 
  by 
  them 
  to 
  the 
  

   Medusa 
  aequorea 
  of 
  ForsMl 
  (1775), 
  and 
  all 
  modern 
  authors 
  are 
  agreed 
  

   that 
  the 
  animal 
  in 
  question 
  is 
  the 
  same 
  that 
  Forskal 
  described. 
  

  

  1. 
  var. 
  AEQUOREA. 
  

  

  I 
  thus 
  designate 
  the 
  variety 
  in 
  whicli 
  there 
  are 
  about 
  as 
  many 
  

   tentacles 
  as 
  canals, 
  many 
  of 
  the 
  knobs 
  remaining 
  rudimentary; 
  that 
  

   is, 
  the 
  form 
  which 
  has 
  usually 
  been 
  described 
  as 
  "J., 
  forskalea.'" 
  

   There 
  is, 
  as 
  pointed 
  out 
  above, 
  no 
  sharp 
  line 
  between 
  it 
  and 
  the 
  var. 
  

   "albida," 
  which 
  has 
  several 
  times 
  as 
  many 
  tentacles 
  as 
  canals; 
  but 
  

   the 
  extremes 
  are 
  so 
  distinct 
  that 
  they 
  are 
  treated 
  separately 
  here 
  for 
  

   the 
  sake 
  of 
  convenience. 
  

  

  Union 
  Bay, 
  British 
  Columbia, 
  surface: 
  7 
  specimens, 
  36-48 
  mm. 
  in 
  

   diameter; 
  in 
  excellent 
  condition. 
  

  

  Fri(hiy 
  Harbor, 
  Puget 
  Sound; 
  10 
  sj)ccimens, 
  38-72 
  mm. 
  in 
  diam- 
  

   eter; 
  excellent 
  condition. 
  

  

  