﻿UuTTON. 
  — 
  Catalogue 
  of 
  the 
  Worms 
  of 
  New 
  Zealand. 
  327 
  

  

  Sub-genus 
  Vennilia, 
  Lamarck. 
  

   Operculum 
  terminated 
  by 
  a 
  calcareous 
  prolongment, 
  generally 
  in 
  the 
  

   form 
  of 
  a 
  simple 
  cone, 
  entire 
  or 
  truncated. 
  

  

  V. 
  HOMBRONi, 
  Quairefages, 
  I.e. 
  II., 
  p. 
  527. 
  

  

  Brancliiee 
  short, 
  cirri 
  28 
  ; 
  apex 
  of 
  the 
  operculum 
  irregularly 
  spiroeform 
  ; 
  

   body 
  of 
  40-50 
  rings, 
  anteriorly 
  7 
  ; 
  setae 
  elongated, 
  curved, 
  fringed 
  ; 
  laminae 
  

   serrated. 
  Tube 
  unknown. 
  

  

  Sub-genus 
  Galeolaria, 
  Lamarck. 
  

  

  Operculum 
  terminated 
  by 
  a 
  calcareous 
  plate 
  more 
  or 
  less 
  flat, 
  often 
  

   composed 
  of 
  several 
  juxtaposed 
  pieces, 
  carrying 
  a 
  large 
  number 
  of 
  variously 
  

   shaped 
  spines, 
  delicate, 
  and 
  elongate, 
  disposed 
  either 
  on 
  the 
  circumference 
  

   or 
  on 
  a 
  more 
  or 
  less 
  considerable 
  tract 
  of 
  the 
  operculum. 
  

  

  V. 
  HYSTRix, 
  March, 
  Rev. 
  Serp., 
  j^. 
  24, 
  pi. 
  21, 
  f. 
  3, 
  4. 
  Quat., 
  I.e., 
  II., 
  p. 
  534. 
  

   Bottom 
  of 
  operculum 
  excentric, 
  anterior 
  border 
  sloping, 
  composed 
  of 
  

   eleven 
  diverging 
  pieces, 
  posterior 
  border 
  erect, 
  composed 
  of 
  hexagonal 
  

   pieces, 
  bearing 
  externally 
  a 
  long 
  spine, 
  from 
  whence 
  the 
  surface 
  of 
  the 
  

   operculum 
  is 
  hidden 
  by 
  crowded 
  prostrate 
  spines. 
  Spines 
  subulate, 
  the 
  

   upper 
  layer 
  ornamented 
  with 
  about 
  20 
  scales. 
  The 
  rest 
  naked, 
  apices 
  

   slightly 
  bent. 
  Tube 
  sub-solitary, 
  creeping, 
  above 
  with 
  two 
  approximated 
  

   keels, 
  often 
  vanishing 
  towards 
  the 
  aperture 
  ; 
  lines 
  of 
  growth 
  strong, 
  

   unequal 
  ; 
  aperture 
  circular, 
  entire. 
  

  

  Genus 
  Cymosjnra, 
  Blainville. 
  

   Operculum 
  single, 
  corneo-calcareous, 
  more 
  or 
  less 
  complicated 
  ; 
  base 
  of 
  

   the 
  branchiae 
  spu-al 
  ; 
  horny 
  laminae 
  instead 
  of 
  uucini. 
  

  

  C. 
  INCOMPLETA, 
  Quatrefages, 
  I.e., 
  II., 
  p. 
  543. 
  

  

  Head 
  indistinct 
  ; 
  branchial 
  cirri 
  very 
  numerous, 
  on 
  a 
  quinquespiral 
  

   base 
  ; 
  operculum 
  (?) 
  ; 
  collar 
  large, 
  trilobed 
  ; 
  body 
  with 
  about 
  100 
  rings, 
  

   anteriorly 
  seven 
  ; 
  anterior 
  setae 
  large, 
  fringed, 
  curved 
  ; 
  laminae 
  finely 
  

   crenulated. 
  

  

  Genus 
  Spirorhis, 
  Daudin. 
  

  

  Basal 
  leaves 
  of 
  the 
  branchiae 
  rolled 
  in 
  a 
  circle 
  or 
  semi- 
  circle 
  ; 
  one 
  or 
  

   two 
  opercula, 
  not 
  united 
  together 
  when 
  two 
  ; 
  tubes 
  generally 
  isolated, 
  

   entirely 
  attached, 
  twisted 
  into 
  a 
  flat 
  or 
  nearly 
  flat 
  spiral. 
  

  

  S. 
  ZELANDiCA, 
  Gray. 
  Dieffenbach's 
  New 
  Zealand, 
  II., 
  p. 
  295. 
  

  

  Tube 
  reversed, 
  whorls 
  two 
  or 
  three, 
  rapidly 
  enlarging 
  ; 
  the 
  last 
  with 
  

   three 
  spiral 
  ridges, 
  the 
  middle 
  rib 
  most 
  prominent. 
  

  

  