﻿78 
  COLLECTIONS 
  FEOM 
  MELANESIA. 
  

  

  account 
  of 
  its 
  more 
  central 
  and 
  differently 
  shaped 
  foramen, 
  wliich 
  is 
  

   larger, 
  wider, 
  and 
  broadly 
  ovate. 
  The 
  more 
  median 
  position 
  of 
  it 
  

   considerably 
  alters 
  the 
  contour 
  of 
  the 
  shell. 
  

  

  106, 
  Fissurella 
  quadriradiata. 
  

  

  Beeve, 
  Conch. 
  Icon. 
  fig. 
  108. 
  

  

  Hah. 
  Port 
  Molle, 
  Queensland 
  {Coppinger) 
  ; 
  Island 
  of 
  Negros, 
  

   Philippines 
  {Ciiminq). 
  

  

  The 
  single 
  specimen 
  from 
  Port 
  Molle 
  is 
  rather 
  more 
  elevated 
  than 
  

   the 
  type 
  from 
  the 
  Philippines, 
  but 
  a 
  second 
  example 
  from 
  the 
  latter 
  

   locality 
  has 
  an 
  equally 
  high 
  elevation. 
  The 
  Australian 
  shell 
  is 
  

   18 
  millim. 
  long, 
  11| 
  broad, 
  and 
  10| 
  in 
  height. 
  The 
  typo 
  has 
  the 
  

   same 
  length 
  and 
  vridth 
  as 
  the 
  preceding 
  specimen, 
  but 
  is 
  only 
  8 
  

   millim. 
  high. 
  

  

  F. 
  ticaoiiica, 
  Peeve, 
  is 
  rather 
  more 
  elongate 
  than 
  this 
  species, 
  has 
  

   finer 
  radiating 
  costfE, 
  the 
  foramen 
  is 
  rather 
  more 
  anterior 
  and 
  

   circumscribed 
  with 
  the 
  exception 
  of 
  the 
  posterior 
  end 
  by 
  a 
  narrow 
  

   dark 
  olive 
  line, 
  which 
  is 
  more 
  or 
  less 
  visible 
  on 
  the 
  exterior. 
  F. 
  

   quadriradiata 
  is 
  not 
  always 
  four-rayed, 
  but 
  may 
  be 
  altogether 
  white 
  

   or 
  have 
  the 
  costse, 
  principally 
  the 
  larger 
  ones, 
  spotted 
  with 
  olive 
  

   and 
  flesh 
  tints. 
  However, 
  judging 
  from 
  the 
  few 
  specimens 
  under 
  

   examination, 
  where 
  rays 
  are 
  present, 
  thej' 
  appear 
  to 
  be 
  of 
  the 
  

   number 
  and 
  in 
  the 
  positions 
  depicted 
  by 
  Peeve. 
  

  

  107. 
  Chiton 
  jugosus. 
  

  

  Gould, 
  Proc. 
  Bost. 
  Soc. 
  Ned. 
  Hist. 
  1846, 
  vol. 
  ii. 
  p. 
  142 
  ; 
  Tf'ilkrs'g 
  

   Krplor.Edpc'd. 
  p. 
  317, 
  fig. 
  430 
  ; 
  Ofia, 
  p. 
  3,& 
  p. 
  242 
  (C. 
  Lophyrus 
  j.). 
  

   Chiton 
  conceutricus, 
  Beeve, 
  1847, 
  Conch. 
  Icon. 
  pi. 
  16. 
  fig. 
  95. 
  

  

  Hah. 
  New 
  South 
  Wales 
  {Gld.) 
  ; 
  New 
  Zealand 
  {Reeve); 
  Port 
  

   Jackson 
  {Coppinger, 
  Angas, 
  and 
  Rev. 
  R. 
  L. 
  King) 
  ; 
  Newcastle 
  {Dr. 
  

   Diejfenhach 
  in 
  Brit. 
  Mus.). 
  

  

  Confirmation 
  of 
  the 
  New-Zealand 
  locality 
  of 
  this 
  species 
  is 
  still 
  

   wanting. 
  

  

  108. 
  Chiton 
  (Ischnochiton) 
  curtisianus. 
  (Plate 
  YI. 
  fig. 
  D.) 
  

  

  Shell 
  oval, 
  flatfish, 
  of 
  a 
  dirty 
  dark 
  greyish 
  colour, 
  having 
  a 
  con- 
  

   spicuous 
  black 
  broadish 
  line 
  from 
  end 
  to 
  end 
  down 
  the 
  middle 
  of 
  the 
  

   back, 
  with 
  a 
  pale 
  one 
  on 
  each 
  side 
  of 
  it, 
  and 
  with 
  the 
  mantle 
  patched 
  

   alternately 
  light 
  and 
  dark, 
  irregularly 
  granulated 
  throughout. 
  

   Valves 
  arched, 
  not 
  carinate 
  at 
  the 
  vertex, 
  with 
  very 
  indistinct 
  

   lateral 
  areas, 
  exhibiting 
  strong 
  concentric 
  lines 
  of 
  growth, 
  especially 
  

   conspicuous 
  at 
  the 
  sides 
  and 
  anterior 
  margins. 
  Front 
  plate 
  well 
  

   curved 
  anteriorly, 
  the 
  posterior 
  margin 
  being 
  broadly 
  sinuafed. 
  

   Second 
  plate 
  longer 
  than 
  the 
  other 
  intermediate 
  valves, 
  slightly 
  

   incurved 
  on 
  each 
  side, 
  the 
  central 
  outcurved 
  point 
  in 
  front, 
  rather 
  

   peaked 
  in 
  the 
  middle 
  of 
  the 
  hinder 
  edge. 
  The 
  third, 
  fourth, 
  fifth, 
  

   sixth, 
  and 
  seventh 
  valves 
  are 
  very 
  short 
  in 
  comparison 
  with 
  their 
  

   width 
  in 
  proportion 
  as 
  1 
  is 
  to 
  3. 
  The 
  jugal 
  sinus 
  is 
  large 
  and 
  

  

  