﻿MOLLtrsCA. 
  65 
  

  

  Cop])ii)ger 
  at 
  Port 
  Jackson 
  are 
  like 
  fig. 
  59 
  in 
  the 
  Conch. 
  Icon. 
  (C. 
  car- 
  

   honarium, 
  Sow. 
  non 
  Phil.), 
  but 
  a 
  little 
  narrower, 
  and 
  those 
  from 
  

   AVest 
  Island 
  in 
  Torres 
  Straits 
  are 
  of 
  a 
  peculiar 
  short 
  stunted 
  

   growth. 
  

  

  3. 
  O. 
  patient, 
  Bayle, 
  = 
  C. 
  rugosum, 
  Wood 
  (non 
  Lamarck), 
  of 
  

   which 
  species 
  C. 
  breve, 
  Quoy 
  and 
  Gaimard, 
  appears 
  to 
  be 
  a 
  variety, 
  

   may 
  be 
  only 
  a 
  form 
  of 
  C. 
  moras 
  ; 
  still 
  there 
  is 
  a 
  character 
  about 
  

   the 
  coarse 
  ribbing 
  and 
  granulation 
  and 
  the 
  blotchy 
  irregularity 
  of 
  

   the 
  painting 
  which 
  seems 
  to 
  demand 
  their 
  separation. 
  Besides, 
  

   M!M, 
  Quoy 
  and 
  Gaimard 
  state 
  that 
  the 
  animals 
  present 
  certain 
  

   differences. 
  

  

  In 
  conclusion, 
  I 
  should 
  observe 
  that 
  the 
  C.taherculdtum 
  of 
  Sowerby 
  

   (Conch. 
  Icon. 
  figs. 
  21 
  a, 
  b) 
  is 
  a 
  peculiarly 
  coloured 
  specimen 
  of 
  this 
  

   species 
  (C. 
  patiens) 
  ; 
  also 
  that 
  the 
  shell 
  figured 
  as 
  G. 
  bornii 
  (Thes. 
  

   fig. 
  175 
  ; 
  Conch. 
  Icon. 
  fig. 
  26) 
  is 
  the 
  true 
  C. 
  carbonariam 
  of 
  Philippi, 
  

   fig. 
  59 
  of 
  the 
  Conch, 
  Icon, 
  not 
  representing 
  the 
  latter 
  species, 
  but 
  

   merely, 
  as 
  already 
  stated, 
  a 
  form 
  of 
  C. 
  moras. 
  

  

  C. 
  tuherculatum, 
  as 
  defined 
  by 
  Lamarck 
  and 
  Kiener, 
  is 
  a 
  common 
  

   Red-Sea 
  species, 
  which 
  has 
  been 
  named 
  C. 
  cteruleum 
  by 
  Sowerby 
  

   (Thes. 
  Conch, 
  vol. 
  ii. 
  p. 
  860, 
  pi. 
  179. 
  figs. 
  61, 
  62). 
  

  

  67. 
  Cerithium 
  nigro-halteatum. 
  (Plate 
  V. 
  fig. 
  N.) 
  

  

  Shell 
  elongate, 
  pyramidal, 
  white, 
  banded 
  with 
  brownish 
  black 
  

   above 
  the 
  suture, 
  around 
  the 
  middle 
  and 
  base 
  of 
  the 
  last 
  whorl. 
  

   Volutions 
  about 
  twelve, 
  constricted 
  above 
  at 
  the 
  suture, 
  longitudi- 
  

   nally 
  strongly 
  costate 
  and 
  spirally 
  ridged 
  and 
  sulcated. 
  The 
  costce 
  

   are 
  prominent, 
  about 
  nine 
  in 
  number 
  on 
  the 
  upper 
  wliorls, 
  somewhat 
  

   interrupted 
  by 
  the 
  depression 
  beneath 
  the 
  suture. 
  The 
  spiral 
  ridges 
  

   are 
  rather 
  prominent 
  upon 
  the 
  costae 
  and 
  unequal 
  in 
  thickness 
  ; 
  

   there 
  are 
  about 
  four 
  principal 
  ones 
  and 
  several 
  smaller 
  intervening 
  

   ones. 
  On 
  the 
  body-whorl 
  (in 
  the 
  single 
  specimen 
  under 
  examina- 
  

   tion) 
  the 
  costse 
  are 
  rather 
  finer 
  and 
  about 
  eleven 
  in 
  number 
  — 
  one, 
  a 
  

   little 
  stouter 
  than 
  the 
  rest 
  on 
  the 
  left 
  side, 
  extending 
  to 
  the 
  base 
  

   and 
  forming 
  a 
  lateral 
  varix, 
  the 
  others 
  becoming 
  obsolete 
  a 
  little 
  

   below 
  the 
  middle, 
  where 
  the 
  whorl 
  is 
  somewhat 
  angnlated 
  and 
  con- 
  

   cave 
  below 
  the 
  angle. 
  The 
  transverse 
  principal 
  lira) 
  number 
  about 
  

   six, 
  of 
  which 
  the 
  two 
  lowermost 
  are 
  granulous, 
  white, 
  and 
  situated 
  

   between 
  the 
  dark 
  base 
  and 
  the 
  zone 
  above 
  the 
  middle. 
  The 
  lower 
  

   part 
  of 
  the 
  whorl 
  is 
  finely 
  concentrically 
  striated 
  and 
  lirate. 
  Aper- 
  

   ture 
  broadly 
  suboval, 
  oblique. 
  Basal 
  canal 
  short, 
  oblique, 
  slightly 
  

   recurved. 
  Columella 
  obliquely 
  arcuate, 
  blackish. 
  Labrum 
  thickened 
  

   by 
  the 
  last 
  costa, 
  grooved 
  and 
  lirate 
  within. 
  Length 
  15 
  millim., 
  

   diameter 
  6. 
  

  

  JIab. 
  Prince 
  of 
  AYales 
  Channel, 
  5-7 
  fms. 
  

  

  This 
  species 
  is 
  readily 
  recognized 
  by 
  the 
  peculiarity 
  of 
  its 
  colours, 
  

   the 
  depth 
  of 
  the 
  sabsutural 
  dcpi'ession, 
  and 
  the 
  concave 
  base 
  of 
  the 
  

   last 
  whorl. 
  

  

  