﻿90 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  large 
  ridge-like 
  knobs 
  are 
  characteristic 
  of 
  advanced 
  stages 
  in 
  growth, 
  

   which 
  would 
  explain 
  their 
  predominance 
  in 
  the 
  large 
  Mediterranean 
  

   examples. 
  

  

  Color. 
  — 
  In 
  the 
  large 
  specimens, 
  as 
  in 
  those 
  from 
  the 
  eastern 
  Pacific 
  

   (1909a), 
  gonads, 
  tentacles, 
  subumbrella, 
  and 
  the 
  four 
  perradial 
  

   ridges 
  of 
  the 
  mouth 
  arms 
  are 
  pink-violet, 
  varying 
  in 
  strength 
  in 
  

   different 
  specimens. 
  Some 
  are 
  almost 
  colorless, 
  but 
  these 
  are 
  poorly 
  

   preserved. 
  The 
  small 
  ones 
  are 
  colorless 
  except 
  that 
  the 
  manubrium 
  

   and 
  gonads 
  are 
  pinkish, 
  or, 
  in 
  some, 
  pale 
  yellowish. 
  

  

  Mayer 
  separates 
  P. 
  Jlaveola 
  Esclischoltz 
  (including 
  P. 
  tahitiana 
  

   Agassiz 
  and 
  Mayer) 
  on 
  account 
  of 
  its 
  yellow 
  color, 
  but 
  Vanlioffen 
  

   (1902a) 
  found 
  that 
  color 
  changes 
  with 
  growth 
  from 
  yellowish 
  to 
  violet. 
  

  

  Genus 
  SANDERIA 
  Gotte. 
  

  

  SANDERIA 
  MALAYENSIS 
  Gbtte. 
  

  

  Sanderia 
  malayensis 
  Gotte, 
  1886, 
  p. 
  835. 
  — 
  Vanhoffen, 
  1902a, 
  p. 
  38, 
  pi. 
  3, 
  fig. 
  12; 
  

  

  pi. 
  8, 
  fig. 
  '69-74.— 
  Mayer, 
  1910, 
  p. 
  590, 
  fig. 
  375. 
  

   Neopelagia 
  eximia 
  Ejshinouye, 
  1910, 
  p. 
  14, 
  pi. 
  3, 
  fig. 
  15. 
  

  

  Station 
  4841, 
  surface, 
  Sea 
  of 
  Japan; 
  1 
  specimen. 
  

  

  Station 
  4845, 
  surface, 
  Sea 
  of 
  Japan; 
  1 
  specimen. 
  

  

  Station 
  4921, 
  surface, 
  off 
  Kagoshima 
  Bay, 
  Japan; 
  1 
  specimen. 
  

  

  The 
  temperatures 
  at 
  these 
  stations 
  range 
  from 
  76° 
  to 
  84°. 
  

  

  The 
  specimens 
  range 
  from 
  40 
  mm. 
  to 
  about 
  70 
  mm. 
  in 
  diameter. 
  

  

  Such 
  good 
  accounts 
  of 
  S. 
  malayensis 
  have 
  been 
  given 
  by 
  Van- 
  

   hoffen 
  (1902a) 
  and 
  Mayer 
  (1910) 
  that 
  it 
  is 
  not 
  necessary 
  to 
  describe 
  

   it 
  in 
  detail 
  here. 
  The 
  large 
  specimen 
  agrees 
  with 
  Vanhoffen's 
  excel- 
  

   lent 
  figures 
  of 
  the 
  species, 
  except 
  that 
  the 
  gonads 
  are 
  more 
  advanced, 
  

   and 
  the 
  smaller 
  ones 
  differ 
  from 
  it 
  only 
  in 
  the 
  more 
  primitive 
  state 
  

   of 
  development 
  of 
  the 
  gonads 
  and 
  tentacles. 
  

  

  Genus 
  CHRYSAORA 
  Peron 
  and 
  Lesueur. 
  

  

  The 
  collection 
  contains 
  a 
  single 
  large 
  CJirysaora 
  which 
  is 
  probably 
  

   the 
  C. 
  melanaster 
  of 
  Brandt, 
  but 
  it 
  has 
  lost 
  its 
  mouth 
  parts 
  and 
  most 
  

   of 
  the 
  margin, 
  besides 
  being 
  otherwise 
  so 
  badly 
  damaged 
  that 
  its 
  

   identity 
  is 
  not 
  certain. 
  

  

  ? 
  CHRYSAORA 
  MELANASTER 
  Brandt. 
  

  

  Chrysaora 
  melanaster 
  Brandt, 
  1838, 
  p. 
  385, 
  pi. 
  16, 
  17. 
  

  

  (For 
  synonymy, 
  see 
  Mayer, 
  1910, 
  p. 
  582.) 
  

  

  Station 
  4781, 
  300-0 
  fathoms; 
  1 
  fragmentary 
  specimen, 
  130 
  mm. 
  in 
  

   diameter. 
  

  

  Genus 
  DACTYLOMETRA 
  L. 
  Agassiz. 
  

  

  This 
  genus 
  has 
  usually 
  been 
  defined 
  as 
  having 
  five 
  tentacles 
  to 
  the 
  

   octant 
  (as 
  for 
  example, 
  by 
  Vanhoffen, 
  1902a, 
  Maas, 
  1909, 
  Mayer, 
  1910, 
  

  

  