﻿Sipkonophora 
  of 
  the 
  Canary 
  Islands. 
  245 
  

  

  other 
  species, 
  even 
  the 
  young 
  stages, 
  which 
  are 
  able 
  to 
  swim 
  

   very 
  briskly, 
  are 
  easily 
  recognizable. 
  In 
  most 
  of 
  them 
  the 
  

   larval 
  tentacle, 
  seated 
  upon 
  the 
  oldest 
  gastric 
  polyp, 
  was 
  still 
  

   demonstrable. 
  The 
  larval 
  batteries 
  are 
  very 
  like 
  those 
  of 
  

   F. 
  contorta 
  ; 
  they 
  are 
  acorn-shaped, 
  of 
  a 
  faint 
  red 
  colour, 
  and 
  

   furnished 
  with 
  numerous 
  short 
  sensorial 
  setaj. 
  The 
  subsidiary 
  

   tentacle 
  is 
  inserted 
  somewhat 
  beneath 
  the 
  top 
  of 
  the 
  battery. 
  

  

  Family 
  Physophorae, 
  Lesson 
  (Discolabidte, 
  Hack.). 
  

  

  29. 
  Physophora 
  magnifica 
  } 
  Hiickel. 
  

  

  Of 
  the 
  splendid 
  Physophora 
  discovered 
  by 
  Hiickel 
  at 
  the 
  

   Canaries 
  a 
  few 
  examples 
  occurred 
  during 
  February. 
  

  

  Family 
  Anthophysidae, 
  Brandt 
  (Athoi-ybidce, 
  Huxley). 
  

  

  30. 
  Athorybia 
  melo 
  } 
  Esch., 
  Q. 
  & 
  G. 
  

  

  To 
  this 
  species 
  I 
  refer 
  some 
  young 
  specimens 
  with 
  only 
  two 
  

   tentacles 
  and 
  gastric 
  polyps, 
  which 
  agree 
  in 
  the 
  brownish 
  

   pigmentation 
  of 
  the 
  involucrum 
  of 
  the 
  cnidaria 
  (the 
  terminal 
  

   vesicle 
  and 
  lateral 
  filaments 
  are 
  always 
  present) 
  and 
  in 
  the 
  

   ridges 
  of 
  the 
  bracts 
  with 
  the 
  description 
  given 
  by 
  Quoy 
  & 
  

   Gaimard. 
  They 
  occurred 
  in 
  February. 
  To 
  this 
  species 
  pro- 
  

   bably 
  belong 
  larval 
  forms 
  whose 
  cnidaria 
  on 
  the 
  single 
  tentacle 
  

   presented 
  an 
  involucrum 
  and 
  two 
  lateral 
  filaments, 
  but 
  no 
  

   terminal 
  vesicle. 
  Moreover, 
  the 
  point 
  of 
  insertion 
  of 
  the 
  sub- 
  

   sidiary 
  tentacle 
  on 
  the 
  battery 
  swells 
  into 
  a 
  brown 
  vesicular 
  

   dilatation. 
  The 
  tive 
  bracts 
  of 
  these 
  larvas 
  already 
  resemble 
  

   those 
  of 
  the 
  full-grown 
  A. 
  melo 
  ; 
  further, 
  5-6 
  palps 
  may 
  be 
  

   recognized. 
  

  

  Tribe 
  II. 
  PNEUMATOPIIOEIDyE, 
  Chun. 
  

  

  Family 
  Physalidas, 
  Brandt. 
  

  

  31. 
  Physalia 
  caravella, 
  Esch. 
  

  

  I 
  noticed 
  the 
  first 
  Physah'ce 
  at 
  the 
  end 
  of 
  January 
  ; 
  from 
  

   that 
  date 
  they 
  occurred 
  more 
  and 
  more 
  abundantly, 
  and 
  after 
  

   the 
  violent 
  storms 
  in 
  February 
  and 
  March 
  they 
  were 
  thrown 
  

   in 
  thousands 
  upon 
  the 
  beach. 
  Upon 
  their 
  minute 
  structure 
  I 
  

   will 
  report 
  elsewhere. 
  

  

  Suborder 
  II. 
  Teacheophysj!, 
  Chun. 
  

  

  Physophoridas 
  with 
  a 
  chambered 
  pneumatophore 
  lined 
  with 
  

   chitin, 
  which 
  emits 
  numerous 
  tracheal 
  tufts 
  surrounding 
  the 
  

   polyps. 
  At 
  the 
  periphery 
  of 
  the 
  pneumatophore 
  a 
  mantle- 
  

  

  