﻿52 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  37. 
  Sistrum 
  tuberculatum. 
  

  

  Purpura 
  tubercxilatum, 
  Blamville, 
  Nonv. 
  Arch, 
  clu 
  Mvs. 
  vol. 
  i. 
  1832, 
  

  

  p. 
  204, 
  pi. 
  9. 
  fig. 
  3. 
  

   Riciuula 
  tuberculata, 
  Heeve, 
  Conch. 
  Icon. 
  fig. 
  11. 
  

   Purpura 
  tuberculata, 
  Kiener, 
  C'oq. 
  Vh\ 
  pi. 
  5. 
  fig. 
  10. 
  

   Purpura 
  gi-auulata, 
  Duclos, 
  Ami. 
  Sci. 
  Nat. 
  1832, 
  vol. 
  xxvi. 
  pi. 
  2. 
  

  

  fig. 
  9. 
  

   ? 
  Purpura 
  margiualba, 
  Blamville, 
  I. 
  c. 
  p. 
  212, 
  pi. 
  10. 
  fig. 
  6. 
  

  

  Ifab. 
  Lord 
  Hood 
  aud 
  Elizabeth 
  Islands 
  (Cummg); 
  Madagascar 
  

   and 
  Red 
  Sea 
  {Blainville) 
  ; 
  New 
  Holland 
  and 
  the 
  Friendly 
  Islands 
  

   {Kiener) 
  ; 
  Port 
  Essington, 
  Port 
  Jackson, 
  Brisbane, 
  Japan, 
  Stewart 
  

   Island, 
  and 
  Lord 
  Hood's 
  Island 
  (Bnt. 
  2Ins.) 
  ; 
  Port 
  Molle 
  and 
  Port 
  

   Curtis, 
  Queensland 
  {Copijincfer); 
  Seychelles 
  and 
  Amirantes 
  Islands 
  

   (Dufo) 
  ; 
  Reunion 
  (Deshayes) 
  ; 
  Mauritius 
  (Martens). 
  

  

  38. 
  Latirus 
  angustus. 
  (Plate 
  Y. 
  fig. 
  F.) 
  

  

  Shell 
  narrow, 
  fusiform, 
  of 
  a 
  rich 
  brown 
  colour. 
  Whorls 
  llg 
  ; 
  the 
  

   two 
  apical 
  ones 
  smooth, 
  forming 
  a 
  bluutish 
  apex, 
  the 
  rest 
  strongly 
  

   ribbed 
  and 
  spirally 
  ridged. 
  liibs 
  a 
  little 
  oblique, 
  very 
  broad, 
  

   rounded, 
  with 
  scarcely 
  any 
  interstices, 
  not 
  reaching 
  the 
  upper 
  

   boundary 
  of 
  the 
  whorls. 
  Transverse 
  lirac 
  or 
  ridges 
  strong 
  : 
  three 
  

   principal 
  ones 
  on 
  the 
  upper 
  whorls 
  ; 
  the 
  uppermost, 
  or 
  that 
  almost 
  

   bounding 
  the 
  suture, 
  a 
  little 
  wavy, 
  scarcely 
  afl:ected 
  by 
  the 
  longi- 
  

   tudinal 
  costoe 
  ; 
  the 
  two 
  otbers 
  situated 
  round 
  the 
  middle 
  of 
  the 
  

   whorls, 
  prominent, 
  and 
  rather 
  acute 
  on 
  the 
  ribs 
  ; 
  between 
  these 
  

   are 
  fine 
  thread-like 
  lirae, 
  generally 
  one 
  in 
  each 
  interstice. 
  Last 
  whorl 
  

   similarly 
  lirated 
  throughout 
  with 
  large 
  and 
  small 
  ridges. 
  The 
  entire 
  

   surface 
  of 
  the 
  shell 
  exhibits 
  between 
  the 
  transverse 
  lirje 
  coarse 
  lines 
  

   of 
  growth. 
  Aperture 
  small, 
  subpyriformly 
  ovate, 
  brownish 
  white 
  

   within, 
  with 
  about 
  four 
  slender 
  white 
  lirse 
  not 
  reaching 
  to 
  the 
  

   margin 
  of 
  the 
  labrum, 
  which 
  is 
  crenulated 
  and 
  dotted 
  with 
  brown 
  

   at 
  the 
  ends 
  of 
  the 
  exterior 
  ridge. 
  Columella 
  covered 
  with 
  a 
  promi- 
  

   nent 
  brownish 
  callosity 
  bearing 
  two 
  fine 
  transverse 
  plaits, 
  one 
  at 
  the 
  

   middle 
  and 
  the 
  other 
  below 
  it. 
  Canal 
  almost 
  straight 
  and 
  nearly 
  

   closed. 
  Length 
  38 
  millim., 
  diameter 
  9. 
  

  

  Hab. 
  Eitzroy 
  Island, 
  Queensland 
  ( 
  (7opjw;(/fr) 
  ; 
  Andaman 
  Islands 
  

   (teste 
  G. 
  B. 
  Sowerby,jun.). 
  

  

  This 
  species 
  may 
  be 
  recognized 
  by 
  its 
  slender 
  form, 
  in 
  which 
  

   respect 
  it 
  somewhat 
  resembles 
  L. 
  lancea. 
  Viewed 
  with 
  the 
  un- 
  

   assisted 
  eye, 
  the 
  wborls 
  appear 
  to 
  bo 
  encircled 
  by 
  three 
  transverse 
  

   prominent 
  liroe, 
  of 
  which 
  the 
  uppermost 
  is 
  nearly 
  simple, 
  whilst 
  

   the 
  two 
  inferior 
  ones 
  are 
  undulate 
  upon 
  aud 
  between 
  the 
  ribs. 
  

   The 
  specimen 
  said 
  to 
  have 
  come 
  from 
  the 
  Andaman 
  Islands, 
  appa- 
  

   rently 
  adult, 
  is 
  smaller 
  than 
  that 
  from 
  Queensland, 
  being 
  20 
  millim. 
  

   long 
  and 
  6^ 
  broad, 
  but 
  in 
  other 
  respects 
  similar. 
  

  

  