﻿316 
  Transactions. 
  — 
  Zoology, 
  

  

  Genus 
  Ommatoplea, 
  Ehrenberg. 
  

   Abrancliiate 
  ; 
  liead 
  entire 
  ; 
  eyes 
  many 
  ; 
  loroboscis 
  terminal 
  ; 
  mouth, 
  

   subterminal 
  ; 
  appendix 
  none. 
  

  

  0. 
  HETEEOPHTHA.LMA, 
  Sclimarcla. 
  

  

  Body 
  depressed, 
  tape-worm-like. 
  Median 
  line 
  white, 
  rest 
  of 
  the 
  body 
  

   red. 
  Head 
  indistinct, 
  apex 
  acuminate. 
  Eyes 
  in 
  transverse 
  hnes. 
  

  

  Under 
  stones 
  on 
  the 
  shore, 
  Auckland. 
  

  

  Genus 
  Meckelia, 
  Leuckart. 
  

  

  Eespkatory 
  fissures 
  two, 
  longitudinal. 
  Eyes 
  none. 
  Proboscis 
  terminal. 
  

   Mouth 
  subterminal. 
  

   M. 
  MACEOSTOMA, 
  Sckmarcla. 
  

  

  Body 
  depressed, 
  greenish 
  blue. 
  Head 
  attenuated. 
  Fissures 
  sub- 
  

   terminal, 
  short. 
  Proboscis 
  subterminal. 
  Mouth 
  oblongo-oval, 
  very 
  broad. 
  

  

  Auckland. 
  

   M. 
  MACEOEEHOCHMA, 
  Sckmarcla. 
  

  

  Body 
  rather 
  flat, 
  brownish 
  olive. 
  Head 
  distinct, 
  oblongo-lanceolate. 
  

   Eespiratory 
  fissures 
  as 
  long 
  as 
  the 
  mouth. 
  

  

  Shores 
  of 
  New 
  Zealand. 
  

  

  Class 
  Gephyeea. 
  

  

  Body 
  cylindrical, 
  with 
  a 
  thick 
  coriaceous 
  skin, 
  often 
  indistinctly 
  ringed. 
  

   Head 
  not 
  distinct 
  from 
  the 
  body, 
  often 
  produced 
  into 
  a 
  proboscis. 
  

  

  Family 
  Sipunculidcs. 
  

   Cylindrical, 
  mouth 
  at 
  the 
  tip 
  of 
  a 
  retractile 
  proboscis, 
  surrounded 
  with 
  

   tentacles, 
  and 
  often 
  with 
  hooks 
  ; 
  anus 
  dorsal 
  ; 
  teeth 
  none. 
  

  

  Genus 
  Sipiinculus, 
  Linnaeus. 
  

  

  Skin 
  netted 
  with 
  anastomosing 
  muscular 
  fibres 
  ; 
  proboscis 
  short, 
  with 
  

   simple 
  tentacles. 
  

   S. 
  ^NEus, 
  Baird, 
  P.Z.S., 
  1868, 
  p. 
  81. 
  

  

  Body 
  cylindrical, 
  slender, 
  attenuated 
  anteriorly, 
  posteriorly 
  thick, 
  fusi- 
  

   form, 
  reticulated, 
  in 
  the 
  anterior 
  portion 
  corrugated, 
  then 
  smoother 
  and 
  

   minutely 
  granulated 
  ; 
  caudal 
  apex 
  oval, 
  smooth, 
  shining 
  ; 
  piroboscis 
  short, 
  

   smooth, 
  the 
  anterior 
  portion 
  thicker 
  than 
  the 
  body; 
  colour 
  white, 
  shining 
  

   bronze. 
  Length, 
  G^ 
  in. 
  ; 
  thickness 
  of 
  anterior 
  part, 
  1^ 
  lines 
  ; 
  of 
  posterior 
  

   part, 
  4 
  lines 
  ; 
  length 
  of 
  proboscis, 
  6 
  lines 
  ; 
  thickness, 
  2 
  lines. 
  New 
  Zea- 
  

   land 
  (Mr. 
  Cuming). 
  

  

  Class 
  Annelida. 
  

  

  Body 
  composed 
  of 
  numerous, 
  more 
  or 
  less 
  similar, 
  segments 
  ; 
  limbs 
  

   none, 
  or 
  rudimentary 
  ; 
  skin 
  generally 
  with 
  chitinous 
  bristles. 
  

  

  Order 
  Oligochjet^. 
  

   Head 
  rudimentary 
  ; 
  no 
  branchiae 
  ; 
  hermaphrodite 
  ; 
  mostly 
  land 
  or 
  fresh 
  

   water. 
  

  

  