﻿MOLLUSCA. 
  113 
  

  

  ' 
  Conch.-Cab.' 
  That 
  collected 
  by 
  Dr. 
  Coppinger 
  has 
  the 
  auricle 
  pre- 
  

   cisely 
  like 
  that 
  of 
  Bunker's 
  specimen, 
  this 
  form 
  of 
  it 
  being, 
  judging 
  

   from 
  the 
  series 
  before 
  me, 
  more 
  usual 
  than 
  that 
  figured 
  by 
  Reeve. 
  

  

  64. 
  Avicula 
  rufa. 
  

  

  Dihnkcr, 
  Conch.-Cab. 
  p. 
  58, 
  pi. 
  19. 
  figs. 
  7, 
  8. 
  

  

  Hah. 
  Java 
  {Danker); 
  West 
  Island, 
  Priuce 
  of 
  Wales 
  Channel, 
  

   Torres 
  Straits, 
  7 
  fms., 
  sandy 
  bottom 
  {Coppinjer). 
  

  

  All 
  three 
  specimens 
  from 
  the 
  latter 
  locality 
  exhibit 
  several 
  white 
  

   radiating 
  lines 
  on 
  both 
  valves, 
  as 
  indicated 
  in 
  the 
  figure 
  8 
  referred 
  

   to. 
  The 
  presence 
  of 
  these 
  rays 
  appears 
  to 
  have 
  been 
  rather 
  exc(^p- 
  

   tional 
  iu 
  the 
  Javan 
  specimens 
  examined 
  by 
  Dunker. 
  

  

  05. 
  Avicula 
  smaragdina. 
  

  

  Reeve, 
  Coiicli. 
  Icon. 
  fig. 
  45. 
  

  

  Hah. 
  Moluccas? 
  {Reeve) 
  ; 
  N.E. 
  Queensland 
  {Ooppinger). 
  

  

  The 
  young 
  stage 
  of 
  this 
  species 
  has 
  not 
  the 
  very 
  prolonged 
  oblique 
  

   form 
  of 
  the 
  adult. 
  The 
  figure 
  in 
  Reeve's 
  wox'k 
  is 
  much 
  too 
  vividly 
  

   coloured, 
  nor 
  does 
  it 
  indicate 
  any 
  rays 
  of 
  spots 
  of 
  a 
  darker 
  tint 
  

   which 
  generally 
  adorn 
  both 
  valves. 
  The 
  ear 
  of 
  the 
  left 
  valve 
  is 
  

   coarsely 
  concentrically 
  wrinkled 
  and 
  extends 
  a 
  little 
  within 
  the 
  

   valve. 
  This 
  species 
  may 
  be 
  the 
  Mytllus 
  meleagridis 
  of 
  Chemnitz 
  

   (Conch.-Cab. 
  viii. 
  p. 
  143, 
  fig. 
  726). 
  

  

  QQ. 
  Avicula 
  zebra. 
  

  

  Reeve, 
  Conch. 
  Icon. 
  fig. 
  36; 
  Dunker, 
  Conch.-Cah. 
  p. 
  60, 
  pi. 
  21. 
  fig. 
  3. 
  

  

  Hah. 
  Moreton 
  Bay 
  {Reeve) 
  ; 
  Port 
  Denison, 
  Queensland, 
  3-4 
  fms. 
  

   (Coppinger). 
  

  

  The 
  two 
  specimens 
  obtained 
  at 
  the 
  latter 
  locality 
  were 
  attached 
  

   to 
  a 
  species 
  of 
  Polyzoa, 
  and 
  in 
  a 
  similar 
  position 
  to 
  the 
  types 
  as 
  

   figured 
  in 
  the 
  ' 
  Conchologia 
  Iconica,' 
  namely 
  with 
  the 
  umbones 
  

   directed 
  downwards. 
  

  

  67. 
  Melina 
  cumingii. 
  

  

  Perna 
  cumingii, 
  Reeve, 
  Conch. 
  Icon. 
  xi. 
  fig. 
  3. 
  

  

  Hah. 
  Australia 
  {Reeve) 
  ; 
  Port 
  Curtis 
  (Coj^pinger). 
  

   The 
  specimen 
  figured 
  by 
  Reeve 
  is 
  higher 
  than 
  long, 
  but 
  another 
  

   in 
  the 
  Cumingian 
  collection 
  has 
  these 
  proportions 
  reversed. 
  

  

  68. 
  Crenatula 
  nigrina. 
  

   Lamarck 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  fig. 
  1 
  a. 
  

  

  Hah. 
  Red 
  Sea 
  {Reeve) 
  ; 
  Albany 
  Island, 
  west 
  coast 
  of 
  Australia 
  

   {Coppinger). 
  

  

  This 
  species, 
  also 
  C. 
  hicosfalis 
  and 
  C. 
  mytiloides, 
  as 
  determined 
  

   by 
  Reeve, 
  are 
  probably 
  slight 
  variations 
  of 
  one 
  and 
  the 
  same 
  form. 
  

  

  I 
  

  

  