﻿70 
  COLLi:CTIONS 
  FROM 
  MELANESIA. 
  

  

  " 
  blanche, 
  quelquefois 
  un 
  pen 
  jaunutre, 
  avec 
  des 
  2^^^s 
  en 
  arriere," 
  

   and 
  the 
  oi^erculum 
  is 
  " 
  rougeatre." 
  None 
  of 
  these 
  features 
  are 
  

   present 
  in 
  iV. 
  melanotragus 
  ; 
  its 
  spire 
  is 
  scarcely 
  raised 
  above 
  the 
  

   last 
  whorl, 
  the 
  labrum 
  is 
  margined 
  with 
  intense 
  black, 
  the 
  colu- 
  

   mella 
  is 
  white 
  and 
  destitute 
  of 
  the 
  " 
  plis 
  en 
  arriere," 
  and 
  the 
  oper- 
  

   culum 
  is 
  flesh-coloured, 
  marked 
  with 
  two 
  arcuate 
  purplish-black 
  

   stripes. 
  Not 
  finding 
  any 
  name 
  which 
  can 
  be 
  retained 
  for 
  this 
  

   species, 
  I 
  have 
  imposed 
  upon 
  it 
  that 
  of 
  N. 
  melanotrafjiis, 
  beiug 
  

   descriptive 
  of 
  the 
  black 
  labrum. 
  The 
  name 
  JV. 
  nigra 
  appears 
  in 
  the 
  

   ' 
  Conchylicn-Cabiuet,' 
  and 
  was 
  given 
  by 
  Chemnitz 
  to 
  another 
  species. 
  

   If 
  such 
  were 
  not 
  the 
  case 
  I 
  would 
  have 
  applied 
  it 
  to 
  tins 
  species, 
  as 
  

   was 
  done 
  by 
  Gray 
  to 
  specimens 
  brought 
  home 
  by 
  Dr. 
  Dieffenbach 
  

   from 
  New 
  Zealand. 
  

  

  83. 
  Nerita 
  costata. 
  

  

  Chemnitz 
  ; 
  Reeve, 
  Conch, 
  Icon. 
  figs. 
  6 
  a, 
  h. 
  

   Hah. 
  N.E. 
  Australia, 
  beach. 
  

  

  84. 
  Nerita 
  lineata. 
  

  

  Chemnitz 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  fig. 
  13. 
  

  

  Hah. 
  Straits 
  of 
  Malacca 
  {Chemnitz)', 
  Port 
  Essington 
  and 
  Philip- 
  

   pine 
  Islands 
  {Reeve) 
  ; 
  Port 
  Molle, 
  12-20 
  fms., 
  and 
  Port 
  Curtis, 
  in 
  

   mangrove-swamps 
  above 
  high 
  -water 
  mark 
  {CopjpvKjer). 
  

  

  85. 
  Nerita 
  squamulata. 
  

   Le 
  Gillou, 
  Revue 
  Zool. 
  1841, 
  p. 
  344 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  figs. 
  G3 
  a-f. 
  

  

  Hah. 
  Port 
  Curtis, 
  Port 
  Denison, 
  Port 
  Molle, 
  Queensland, 
  12- 
  

   20 
  fms., 
  on 
  a 
  rocky 
  bottom 
  {Goppinger) 
  ; 
  Singapore 
  and 
  Philippine 
  

   Islands 
  {Reeve) 
  ; 
  Samoa 
  Islands 
  {Brenchley) 
  ; 
  Pelew 
  Islands 
  {King). 
  

  

  ^Q. 
  Nerita 
  sigiiata. 
  

  

  Maclcay 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  pi. 
  x. 
  figs. 
  44 
  a, 
  h. 
  

  

  Hah. 
  Friday 
  Island, 
  Torres 
  Straits, 
  in 
  mangrove-swamps. 
  

  

  One 
  small 
  specimen, 
  obtained 
  at 
  the 
  above 
  locality, 
  has 
  the 
  ridges 
  

   of 
  a 
  blackish 
  colour 
  articulated 
  with 
  creamy 
  white, 
  the 
  interstices 
  

   being 
  of 
  a 
  dirty 
  white 
  colour. 
  

  

  87. 
  Turbo 
  concinnus. 
  

  

  Philipjn, 
  Con.- 
  Cab. 
  p. 
  44, 
  pL 
  xi. 
  fig. 
  6 
  (published 
  in 
  Lief. 
  65 
  in 
  the 
  

  

  year 
  1847). 
  

   =T. 
  articulatus, 
  Reeve, 
  Conch. 
  Icon. 
  sp. 
  39 
  (1848). 
  

  

  Hah. 
  Port 
  Molle, 
  Queensland, 
  on 
  a 
  coral-reef 
  {Goppinger). 
  

  

  The 
  operculum 
  of 
  this 
  species 
  is 
  solid, 
  convex, 
  more 
  or 
  less 
  pale 
  

   greenish, 
  coarsely 
  granular, 
  especially 
  near 
  the 
  outer 
  margin, 
  and 
  

   exhibits 
  a 
  slight, 
  obliquely 
  arcuate 
  depression 
  extending 
  trom 
  the 
  

   centre 
  to 
  the 
  opposite 
  or 
  inner 
  side. 
  

  

  