﻿310 
  

  

  Transactions,-^Z 
  oology 
  , 
  

  

  Anthead^, 
  

  

  

  Analyis 
  of 
  the 
  genera. 
  

  

  

  Mouth 
  normal. 
  

  

  

  Tentacles 
  not 
  fully 
  retractile. 
  

  

  

  Column 
  long, 
  trumpet-shaped... 
  

  

  Aiptasia. 
  

  

  Column 
  normal. 
  

  

  

  Tentacles 
  conical 
  

  

  Anthea. 
  

  

  Tentacles 
  fusiform 
  

  

  Eumeiiides, 
  

  

  Tentacles 
  retractile. 
  

  

  

  Tentacles 
  subulate. 
  

  

  

  Tentacles 
  sub-equal 
  ... 
  

  

  Paractis. 
  

  

  Tentacles 
  very 
  unequal 
  ... 
  

  

  Dysactis, 
  

  

  Tentacles 
  not 
  subulate. 
  

  

  

  Tentacles 
  club-shaped 
  

  

  

  Mouth 
  elevated 
  

  

  Melactis 
  

  

  Mouth 
  depressed 
  

  

  Corynactis, 
  

  

  Tentacles 
  moniliform 
  ... 
  

  

  Heteractis, 
  

  

  ACTINIAD^. 
  

  

  

  Analysis 
  of 
  the 
  genera. 
  

  

  

  Tentacles 
  not 
  retractile. 
  

  

  

  Column 
  short 
  and 
  cylindrical 
  

  

  Comactis. 
  

  

  Column 
  long 
  and 
  conical 
  ... 
  

  

  Ceratactis. 
  

  

  Tentacles 
  retractile. 
  

  

  

  Skin 
  smooth. 
  

  

  

  Column 
  pierced 
  

  

  Nemactis. 
  

  

  Column 
  imperforate 
  

  

  Actinia. 
  

  

  Skin 
  warted 
  ... 
  

  

  Phymactis. 
  

  

  BUNODID^,* 
  

  

  

  Analysis 
  of 
  the 
  genera 
  (after 
  Gosse). 
  

  

  

  Tubercles 
  conspicuous. 
  

  

  

  Disc 
  and 
  tentacles 
  retractile. 
  

  

  

  Tubercles 
  of 
  one 
  kind 
  only. 
  

  

  

  In 
  the 
  form 
  of 
  rounded 
  warts. 
  

  

  

  Irregularly 
  scattered 
  

  

  Tealia. 
  

  

  Arranged 
  in 
  vertical 
  lines 
  ... 
  

  

  Bunodes, 
  

  

  Arranged 
  in 
  wavy 
  horizontal 
  lines 
  ... 
  

  

  Cereus. 
  

  

  Arranged 
  in 
  a 
  single 
  horizontal 
  line 
  

  

  Hormathia. 
  

  

  In 
  the 
  form 
  of 
  pointed 
  blisters 
  ... 
  

  

  Cystactis. 
  

  

  Tubercles 
  of 
  two 
  kinds, 
  viz., 
  rounded 
  warts 
  

   and 
  erectile 
  pointed 
  papillse 
  ... 
  

  

  Echinactis. 
  

  

  Disc 
  and 
  tentacles 
  not 
  retractile 
  

  

  Bolocera. 
  

  

  Tubercles 
  obsolete 
  

  

  Stomphia. 
  

  

  ■ 
  Phymactis 
  (ActiniadBe) 
  has 
  also 
  the 
  column 
  warted. 
  

  

  