﻿Siphonophora 
  of 
  the 
  Canary 
  Islands. 
  229 
  

  

  families 
  of 
  the 
  Diplophysidre 
  and 
  Aglaismidse. 
  I 
  mention 
  

   this 
  circumstance 
  only 
  in 
  order 
  to 
  show 
  how 
  doubtful 
  it 
  is 
  to 
  

   introduce 
  the 
  progeny 
  of 
  a 
  well-characterized 
  family 
  into 
  the 
  

   system 
  as 
  representatives 
  of 
  equivalent 
  families. 
  

  

  Family 
  II. 
  Diphyidse, 
  Eschsch. 
  

   Subfam. 
  1. 
  Epibulidje, 
  Hack. 
  

  

  Hackel 
  characterizes 
  the 
  genus 
  Epibulia 
  by 
  the 
  absence 
  of 
  

   an 
  hydroecium. 
  As, 
  however, 
  indications 
  of 
  such 
  a 
  thing 
  are 
  

   given 
  by 
  the 
  produced 
  wing-like 
  edges 
  of 
  the 
  inferior 
  necto- 
  

   calyx, 
  and 
  on 
  the 
  other 
  hand 
  Diphyes 
  subtills 
  has 
  no 
  hydr- 
  

   oecium 
  in 
  the 
  superior 
  nectocalyx, 
  I 
  would 
  note 
  as 
  a 
  further 
  

   distinctive 
  character 
  from 
  Diphyes 
  the 
  maturation 
  of 
  the 
  

   sexual 
  products 
  on 
  the 
  stem 
  and 
  the 
  absence 
  of 
  a 
  Eudoxia- 
  

   formation. 
  It 
  is 
  true 
  that 
  in 
  freshly 
  captured 
  Epibulia 
  auran- 
  

   tiaca 
  the 
  Eudoxia-gvou\>s 
  rapidly 
  separate, 
  but 
  we 
  never 
  meet 
  

   with 
  these 
  groups 
  already 
  furnished 
  with 
  mature 
  semen 
  and 
  

   ova 
  floating 
  freely 
  in 
  the 
  sea. 
  It 
  is 
  also 
  in 
  accordance 
  with 
  

   this 
  that 
  (at 
  least 
  in 
  the 
  Canarian 
  forms 
  examined 
  by 
  me 
  

   upon 
  this 
  point) 
  no 
  reserve-gonocalyces 
  occur. 
  

  

  7. 
  Epibulia 
  injlata, 
  sp. 
  n. 
  

  

  Umbrellar 
  jelly 
  of 
  both 
  calyces 
  thin-walled. 
  Subtim- 
  

   brella 
  of 
  the 
  superior 
  calyx 
  swelled 
  out. 
  Oil-receptacle 
  com- 
  

   paratively 
  large 
  (from 
  one 
  third 
  to 
  half 
  as 
  long 
  as 
  the 
  sub- 
  

   umbrella), 
  ovate, 
  and 
  furnished 
  on 
  the 
  ventral 
  surface 
  with 
  

   large 
  fluid-cells. 
  Ventral 
  wings 
  of 
  the 
  inferior 
  calyx 
  well 
  

   developed. 
  Course 
  of 
  vessels 
  simple, 
  as 
  in 
  the 
  calyces 
  of 
  

   Diphyids 
  ; 
  margins 
  of 
  both 
  calyces 
  smooth, 
  without 
  pro- 
  

   jecting 
  wing- 
  like 
  angles; 
  stem 
  short, 
  monoecious. 
  The 
  last 
  

   groups 
  of 
  appendages 
  lose 
  the 
  bract, 
  stomachal 
  sac, 
  and 
  ten- 
  

   tacles, 
  so 
  that 
  only 
  the 
  gonocalyx 
  remains 
  on 
  the 
  stem. 
  

  

  Epibulia 
  injlata 
  is 
  a 
  small, 
  easily 
  recognizable 
  Diphyid, 
  

   measuring 
  10 
  millim., 
  which 
  appeared 
  singly 
  and 
  in 
  very 
  few 
  

   examples 
  during 
  the 
  winter. 
  Both 
  the 
  subumbrellas 
  have 
  a 
  

   delicate 
  rosy 
  tint 
  ; 
  only 
  once 
  I 
  found 
  them 
  with 
  orange 
  spots. 
  

  

  8. 
  Epibulia 
  nionoica, 
  sp. 
  n. 
  

  

  Nectocalyces 
  and 
  course 
  of 
  vessels 
  on 
  the 
  subumbrella 
  

   resembling 
  those 
  of 
  E. 
  aurantiaca 
  ; 
  but 
  the 
  diverticula 
  of 
  

   the 
  subumbrella 
  of 
  the 
  inferior 
  nectocalyx 
  are 
  wanting, 
  and 
  

   the 
  fluid- 
  receptacle 
  is 
  very 
  small. 
  SStem 
  monoecious 
  ; 
  one 
  

  

  