﻿36 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  3. 
  Octopus 
  maculosus. 
  (Plate 
  IV. 
  fig. 
  C.) 
  

   Hoyle, 
  Trans. 
  Roy. 
  Physical 
  Soc. 
  Edinh. 
  1884. 
  

  

  Body 
  short, 
  about 
  as 
  broad 
  as 
  loug, 
  dirty 
  buff 
  beneath, 
  of 
  a 
  dark 
  

   bluish 
  slate-colour 
  upon 
  the 
  back, 
  minutely 
  dotted 
  on 
  both 
  sides, 
  the 
  

   dots 
  being 
  scarcely 
  visible 
  to 
  the 
  naked 
  eye 
  except 
  upon 
  the 
  pale 
  

   ventral 
  surface, 
  smooth 
  below 
  and 
  above, 
  merely 
  wrinkled 
  by 
  con- 
  

   traction 
  of 
  the 
  skin, 
  without 
  granulation 
  or 
  cirri. 
  Head 
  narrower 
  

   than 
  the 
  body, 
  a 
  little 
  prominent 
  at 
  the 
  sides 
  or 
  eyes, 
  of 
  the 
  same 
  

   colour 
  above 
  as 
  the 
  body. 
  Siphuncle 
  buff. 
  Arms 
  alternately 
  banded 
  

   with 
  dark 
  slaty 
  blue 
  and 
  buff, 
  the 
  former 
  colour 
  predominating, 
  

   ornamented 
  here 
  and 
  there 
  with 
  pale, 
  more 
  or 
  less 
  ovate 
  rings 
  upon 
  

   some 
  of 
  the 
  dark 
  bands. 
  Dorsal 
  pair 
  rather 
  shorter 
  than 
  the 
  rest, 
  

   which 
  are 
  subequal, 
  connected 
  by 
  a 
  strong 
  interbrachial 
  membrane, 
  

   which 
  joins 
  the 
  two 
  ventral 
  arms 
  a 
  httle 
  lower 
  down 
  than 
  these 
  and 
  

   the 
  two 
  adjoining. 
  Cups 
  alternating 
  in 
  two 
  rows, 
  very 
  slightly 
  

   prominent, 
  close 
  together, 
  buff 
  on 
  a 
  slaty-blue 
  ground, 
  and 
  thus 
  con- 
  

   spicuous, 
  about 
  one 
  hundred 
  in 
  number 
  on 
  the 
  longest 
  arms 
  and 
  a 
  

   few 
  less 
  on 
  the 
  dorsal 
  pair, 
  of 
  the 
  same 
  size 
  on 
  all 
  the 
  arms, 
  the 
  

   largest 
  of 
  them 
  situated 
  towards 
  the 
  lower 
  part, 
  the 
  rest 
  gradually 
  

   lessening 
  towards 
  the 
  extremity. 
  

  

  Length 
  of 
  body 
  22 
  millim., 
  diam. 
  26 
  ; 
  length 
  from 
  end 
  of 
  body 
  

   to 
  membrane 
  between 
  lower 
  pair 
  of 
  arms 
  43 
  millim. 
  ; 
  diam. 
  of 
  

   head 
  20 
  ; 
  length 
  of 
  longest 
  arm 
  from 
  the 
  mouth 
  to 
  the 
  tip 
  78 
  

   millim. 
  ; 
  largest 
  cup 
  If 
  wide. 
  

  

  Hah. 
  Port 
  Jackson. 
  

  

  The 
  peculiarity 
  of 
  the 
  colour 
  of 
  this 
  species 
  readily 
  distinguishes 
  

   it 
  from 
  all 
  others 
  previously 
  described. 
  

  

  II. 
  GASTROPODA. 
  

  

  1. 
  Conns 
  lizardensis. 
  

  

  Crosse, 
  Joiirn. 
  de 
  Conch. 
  1865, 
  vol. 
  xiii. 
  p. 
  305, 
  pi. 
  ix. 
  fig. 
  5 
  ; 
  Soiccrby, 
  

   Tlies. 
  Con. 
  iii. 
  pi. 
  288. 
  fig. 
  642. 
  

  

  Hab. 
  Lizard 
  Island, 
  N.E. 
  Australia 
  (Crosse); 
  Arafura 
  Sea, 
  

   N. 
  Australia, 
  32-36 
  fath. 
  {Coppingcr). 
  

  

  The 
  single 
  specimen 
  from 
  the 
  latter 
  locality 
  is 
  about 
  the 
  same 
  

   size 
  as 
  the 
  type 
  described 
  by 
  M. 
  Crosse, 
  but 
  differs 
  in 
  having 
  the 
  

   spire 
  less 
  elevated, 
  although 
  consisting 
  of 
  an 
  equal 
  number 
  of 
  whorls. 
  

   The 
  twofold 
  character 
  of 
  the 
  spiral 
  ridges, 
  the 
  strong 
  raised 
  lines 
  of 
  

   increment, 
  and 
  the 
  fine 
  sculpture 
  upon 
  the 
  top 
  of 
  the 
  volutions 
  are 
  

   all 
  maintained. 
  

  

  2. 
  Conus 
  aculeiformis. 
  

  

  Reeve, 
  Conch. 
  Icon. 
  pi. 
  44. 
  figs. 
  240 
  a, 
  b 
  ; 
  Sowerby, 
  Thes. 
  Conch, 
  iii. 
  

   pi. 
  202. 
  fig. 
  370. 
  

  

  Hah. 
  Island 
  of 
  Mindanao, 
  Philipi>ines 
  {Cuming); 
  Arafura 
  Sea, 
  

   32-36 
  fath. 
  (Goppinger). 
  

  

  