﻿236 
  Prof. 
  Carl 
  Chun 
  on 
  the 
  

  

  Amphicaryon 
  acaule 
  appeared 
  singly 
  from 
  December 
  on- 
  

   wards 
  to 
  April 
  : 
  the 
  Eudoxias 
  belonging 
  to 
  it 
  were 
  observed 
  

   as 
  early 
  as 
  October. 
  In 
  older 
  examples 
  the 
  smaller 
  calyx 
  

   was 
  flattened 
  out 
  like 
  a 
  bowl 
  and 
  immersed 
  in 
  the 
  larger 
  one. 
  

   The 
  subumbrella 
  of 
  the 
  smaller 
  calyx 
  is 
  in 
  all 
  forms 
  so 
  small 
  

   that 
  it 
  may 
  easily 
  be 
  overlooked. 
  

  

  Arnphicaryon 
  becomes 
  15 
  millim. 
  long, 
  and, 
  not 
  only 
  by 
  

   the 
  peculiar 
  form 
  of 
  its 
  calyces, 
  but 
  above 
  all 
  by 
  the 
  retro- 
  

   gression 
  of 
  its 
  stem, 
  represents 
  one 
  of 
  the 
  most 
  noteworthy 
  

   of 
  the 
  Canarian 
  Siphonophora. 
  It 
  has, 
  in 
  common 
  with 
  the 
  

   Diphyidae 
  already 
  mentioned, 
  the 
  formation 
  of 
  Eudoxiae, 
  

   while 
  by 
  the 
  rounded 
  form 
  of 
  the 
  calyces 
  it 
  makes 
  the 
  tran- 
  

   sition 
  to 
  the 
  Prayidae. 
  

  

  Subfam. 
  IV. 
  Prayidm, 
  Koll. 
  

  

  19. 
  Pray 
  a 
  maxima, 
  Gegenb. 
  

  

  Occurred 
  much 
  more 
  rarely 
  than 
  in 
  the 
  Mediterranean 
  in 
  

   perfectly 
  sexually 
  mature 
  examples 
  during 
  February. 
  In 
  

   many 
  groups 
  two 
  mature 
  male 
  or 
  female 
  gonocalyces 
  were 
  

   developed 
  at 
  the 
  same 
  time. 
  

  

  20. 
  Liiyopsis 
  diphyes, 
  Vogt. 
  

   Observed 
  only 
  once, 
  at 
  the 
  beginning 
  of 
  October. 
  

  

  Family 
  III. 
  Stephanophyidae, 
  Chun. 
  

  

  Calycophoridce 
  with 
  four 
  nectocalyces 
  placed 
  like 
  a 
  wreath 
  

   in 
  the 
  same 
  plane 
  and 
  with 
  heteromorphous 
  tentacles. 
  

  

  Stephanophyes, 
  g. 
  n. 
  

  

  Nectocalyces 
  with 
  the 
  oil-receptacle 
  repeatedly 
  divided 
  

   dichotomously. 
  Stem 
  monoecious. 
  Appendicular 
  groups 
  

   constructed 
  like 
  those 
  of 
  the 
  genus 
  Liiyopsis, 
  remaining 
  

   sessile. 
  In 
  the 
  internodes 
  are 
  seated 
  heteromorphous 
  ten- 
  

   tacles, 
  with 
  small 
  balaniform 
  cnidaria 
  without 
  tactile 
  filaments. 
  

  

  21. 
  Stephanophyes 
  superba, 
  sp. 
  n. 
  

  

  Nectocalyces 
  similarly 
  formed, 
  resembling 
  those 
  of 
  the 
  

   genus 
  Liiyopsis, 
  with 
  repeatedly 
  dichotomously 
  divided 
  fluid- 
  

   vessels, 
  swollen 
  into 
  knots, 
  and 
  a 
  large 
  nectosac. 
  Numerous 
  

   reserve-nectocalyces 
  present 
  at 
  the 
  commencement 
  of 
  the 
  

  

  