﻿MOLLTTSCA. 
  91 
  

  

  tho 
  latter 
  name 
  should 
  be 
  retained, 
  having 
  a 
  few 
  months' 
  priority 
  of 
  

   publication. 
  

  

  The 
  single 
  specimen 
  from 
  Torres 
  Straits 
  agrees 
  with 
  the 
  excellent 
  

   description 
  given 
  by 
  Mr. 
  Abraham 
  except 
  in 
  respect 
  of 
  the 
  greater 
  

   proportional 
  length 
  of 
  the 
  caudal 
  portion 
  of 
  the 
  body, 
  which 
  equals 
  

   halt 
  the 
  entire 
  length 
  of 
  the 
  animal, 
  and 
  the 
  greater 
  breadth 
  of 
  the 
  

   foot, 
  two 
  differences 
  probably 
  due 
  to 
  the 
  various 
  degrees 
  of 
  con- 
  

   traction 
  at 
  death. 
  

  

  134. 
  Doris 
  (Platydoris) 
  infrapicta. 
  

  

  Body 
  flattened, 
  elongate 
  oval. 
  Mantle 
  softish, 
  fleshy, 
  finely 
  

   granular 
  above, 
  smooth 
  beneath 
  the 
  widely 
  expanded 
  border. 
  Foot 
  

   broad, 
  rounded 
  at 
  both 
  ends, 
  widely 
  spreading 
  all 
  round 
  except 
  

   beneath 
  the 
  mouth, 
  where 
  it 
  is 
  more 
  narrowly 
  expanded, 
  and 
  has 
  a 
  

   narrow 
  lamina 
  above, 
  which 
  is 
  notched 
  in 
  the 
  middle 
  and 
  is 
  pro- 
  

   duced 
  a 
  little 
  in 
  advance 
  of 
  the 
  edge 
  of 
  the 
  foot 
  itself. 
  Oral 
  ten- 
  

   tacles 
  compressed, 
  curving 
  forward. 
  Ehinophores 
  short, 
  with 
  com- 
  

   paratively 
  few 
  lamina?, 
  pointed 
  at 
  the 
  apex. 
  Branchial 
  plume 
  six- 
  

   lobed, 
  each 
  lobe 
  trifurcate 
  above, 
  surrounding 
  the 
  small 
  central 
  

   yellow 
  six 
  (■?)-lobed 
  anus. 
  

  

  Colour 
  pale 
  buff, 
  variegated 
  with 
  a 
  dirty 
  brownish 
  tint 
  above. 
  

   Beneath, 
  the 
  mantle-expansion 
  is 
  copiously 
  stained 
  and 
  blotched 
  with 
  

   dark 
  chocolate-brown, 
  except 
  near 
  the 
  border, 
  which 
  is 
  pale 
  and 
  

   unspotted. 
  Foot 
  spotted 
  with 
  the 
  same 
  colour, 
  especially 
  towards 
  

   the 
  centre, 
  the 
  margin 
  being 
  pale 
  and 
  destitute 
  of 
  markings. 
  

   Length 
  50 
  millim., 
  width 
  3'2 
  ; 
  foot 
  43 
  long, 
  18 
  broad. 
  

  

  Uab. 
  Queensland, 
  4 
  fms. 
  

  

  This 
  species 
  appears 
  to 
  be 
  closely 
  related 
  to 
  D. 
  inframaculata, 
  

   Abraham, 
  from 
  Amboina. 
  It 
  differs 
  in 
  coloration 
  somewhat, 
  the 
  

   greater 
  width 
  of 
  the 
  foot, 
  which 
  is 
  not 
  " 
  truncate 
  in 
  front," 
  the 
  

   softer 
  character 
  of 
  the 
  mantle, 
  and 
  the 
  coarser 
  granulation, 
  of 
  its 
  

   dorsal 
  surface. 
  

  

  135. 
  Plocamophorus 
  insignis. 
  (Plate 
  VI. 
  figs. 
  L, 
  L 
  1.) 
  

  

  Body 
  elongate, 
  ending 
  posteriorly 
  in 
  a 
  laterally 
  compressed 
  and 
  

   obliquely 
  truncate 
  termination 
  ; 
  (in 
  spirit) 
  of 
  a 
  pale 
  colour, 
  dotted 
  

   with 
  black 
  along 
  the 
  sides 
  close 
  to 
  the 
  foot, 
  on 
  the 
  oblique 
  carinate 
  

   margin 
  of 
  the 
  posterior 
  end, 
  and 
  on 
  the 
  sides 
  of 
  this 
  caudal 
  extremity, 
  

   which 
  also 
  exhibits 
  a 
  few 
  small 
  rounded 
  tubercles. 
  Branchial 
  

   plume 
  a 
  little 
  posterior 
  to 
  the 
  middle 
  of 
  the 
  back, 
  trilobed, 
  one 
  lobe 
  

   central, 
  anterior, 
  the 
  other 
  two 
  lateral, 
  one 
  on 
  each 
  side, 
  bifurcate, 
  

   all 
  branching 
  above. 
  Anus 
  stellate, 
  situated 
  between 
  the 
  lateral 
  

   lobes. 
  On 
  the 
  back, 
  a 
  little 
  behind 
  the 
  branchiae, 
  is 
  situated 
  a 
  single 
  

   black-spotted 
  elongate 
  papilla 
  on 
  each 
  side. 
  Foot 
  elongate, 
  with 
  a 
  

   double 
  margin 
  in 
  front, 
  finely 
  tuberculated 
  in 
  the 
  groove 
  between 
  

   the 
  two 
  edges, 
  much 
  attenuating 
  posteriorly. 
  Head 
  with 
  the 
  

   frontal 
  margin 
  black- 
  dotted, 
  bearing 
  a 
  fringe 
  of 
  about 
  eight 
  slender 
  

   prolongations 
  ; 
  beneath 
  this 
  and 
  between 
  it 
  and 
  the 
  mouth 
  is 
  a 
  

  

  