﻿36 
  I'KOVEEDINGS 
  OF 
  THE 
  NATIONAL 
  MVHEUM. 
  vol. 
  44. 
  

  

  sionally 
  I 
  could 
  make 
  out 
  the 
  scar 
  which 
  marked 
  the 
  location 
  of 
  a 
  

   tentacle. 
  As 
  to 
  the 
  numbers 
  of 
  the 
  various 
  organs, 
  not 
  much 
  can 
  be 
  

   said. 
  It 
  is 
  impossible 
  to 
  make 
  any 
  estimate 
  of 
  the 
  tentacles, 
  but 
  the 
  

   otocysts 
  and 
  bulbs, 
  of 
  which 
  there 
  are 
  about 
  as 
  many 
  of 
  one 
  as 
  of 
  

   the 
  other, 
  are 
  evidently 
  very 
  numerous, 
  for 
  I 
  counted 
  16 
  otocysts 
  

   over 
  about 
  one-twentieth 
  of 
  the 
  circumference. 
  In 
  this 
  distance 
  

   there 
  was 
  the 
  scar 
  of 
  only 
  one 
  tentacle; 
  the 
  bulbs 
  could 
  not 
  be 
  

   counted, 
  but 
  each 
  one 
  that 
  could 
  be 
  seen 
  lay 
  between 
  two 
  otocysts. 
  

   These 
  observations 
  suggest 
  a 
  total 
  of 
  some 
  300 
  otocysts 
  and 
  knobs; 
  

   that 
  is, 
  about 
  the 
  same 
  number 
  as 
  in 
  large 
  specimens 
  of 
  T. 
  lucullana 
  

   which 
  have 
  64 
  or 
  more 
  large 
  tentacles 
  and 
  upward 
  of 
  300 
  knobs; 
  in 
  

   formosa 
  39 
  is 
  the 
  largest 
  number 
  of 
  tentacles 
  I 
  have 
  counted 
  [flayer 
  

   (1910) 
  credits 
  it 
  with 
  32 
  only], 
  and 
  there 
  are 
  only 
  about 
  100 
  bulbs 
  (96, 
  

   according 
  to 
  Mayer). 
  

  

  The 
  otocysts 
  of 
  the 
  Pacific 
  specimen 
  are 
  large, 
  and 
  in 
  two 
  of 
  the 
  

   best 
  preserved 
  ones 
  8-10 
  otoliths 
  could 
  be 
  seen, 
  lying 
  in 
  a 
  single 
  

   series 
  around 
  the 
  periphery 
  of 
  the 
  vesicle, 
  just 
  as 
  they 
  do 
  in 
  T. 
  

   formosa 
  (Mayer, 
  1910, 
  pi. 
  41, 
  fig. 
  3). 
  The 
  gonads 
  begin 
  close 
  to 
  the 
  

   manubrium, 
  at 
  the 
  distal 
  end 
  of 
  the 
  peduncle, 
  run 
  over 
  that 
  organ 
  

   and 
  over 
  the 
  subumbrella 
  nearly 
  to 
  the 
  ring 
  canal, 
  being 
  largest 
  in 
  

   the 
  region 
  of 
  the 
  peduncle 
  and 
  the 
  central 
  part 
  of 
  the 
  subumbrella, 
  

   and 
  groAving 
  smaller 
  toward 
  the 
  margin. 
  Each 
  gonad 
  consists 
  of 
  a 
  

   single 
  fold 
  or 
  lamella, 
  thrown 
  into 
  a 
  close 
  series 
  of 
  transverse 
  folds. 
  

   In 
  their 
  present 
  condition 
  the 
  lamellae 
  are 
  more 
  or 
  less 
  split 
  over 
  part 
  

   of 
  their 
  lengths, 
  so 
  that 
  each 
  seems 
  to 
  be 
  double, 
  but 
  this 
  is 
  clearly 
  

   accidental. 
  

  

  Manubrium. 
  — 
  The 
  manubrium 
  is 
  short 
  (contracted), 
  the 
  lips 
  much 
  

   more 
  complex 
  than 
  in 
  either 
  lucullana 
  or 
  formosa. 
  

  

  Color. 
  — 
  In 
  formalin 
  gonads, 
  manubrium, 
  and 
  lips 
  are 
  pale, 
  but 
  

   opaque, 
  ochre-yellow. 
  

  

  Family 
  AEQUORIDAE 
  Eschscholtz, 
  1829. 
  

   Genus 
  AEQUOREA 
  P^ron 
  and 
  Lesueur, 
  1809. 
  

  

  I 
  had 
  hoped 
  that 
  the 
  Albatross 
  collection, 
  together 
  with 
  the 
  series 
  m 
  

   the 
  Museum 
  of 
  Comparative 
  Zoology, 
  would 
  afford 
  the 
  basis 
  for 
  a 
  

   revision 
  of 
  this 
  puzzling 
  genus, 
  but 
  the 
  gaps, 
  both 
  geographic 
  and 
  

   structural, 
  are 
  too 
  serious 
  to 
  allow 
  this. 
  

  

  The 
  difficulty 
  has 
  been 
  to 
  find 
  any 
  character 
  or 
  combination 
  of 
  

   characters 
  sufficiently 
  stable 
  to 
  afford 
  a 
  basis 
  for 
  classification, 
  the 
  

   only 
  two 
  which 
  seem 
  to 
  be 
  precise, 
  so 
  far 
  as 
  we 
  yet 
  know, 
  being 
  the 
  

   presence 
  or 
  absence 
  of 
  gelatinous 
  subumbral 
  papillae 
  and 
  of 
  excretory 
  

   papillae. 
  The 
  former 
  has 
  been 
  made 
  by 
  Mayer 
  the 
  distinguishing 
  

   character 
  of 
  Zygodactyla, 
  but 
  gelatinous 
  papillae 
  are 
  not 
  present 
  

   in 
  the 
  type 
  of 
  Zygodactyla, 
  Z. 
  coerulescens 
  Brandt, 
  and 
  another 
  

  

  