﻿94 
  COLLECTIONS 
  FUOJI 
  MKLANESIA. 
  

  

  has 
  a 
  remarkably 
  deeply 
  sunken 
  lunule 
  ; 
  it 
  is 
  34 
  millim. 
  long, 
  

   31 
  high, 
  and 
  '28 
  in 
  diameter. 
  

  

  5. 
  Venus 
  torresiana. 
  (Plate 
  VI. 
  figs. 
  M-M 
  2.) 
  

  

  Shell 
  suhovate, 
  moderately 
  thick, 
  nearly 
  equilateral, 
  concentri- 
  

   cally 
  finely 
  ridged 
  and 
  radiately 
  sulcated, 
  white, 
  irregularly 
  rayed, 
  

   streaked, 
  and 
  spotted 
  with 
  lightish 
  brown. 
  Anterior 
  and 
  posterior 
  

   ends 
  subequal, 
  obtusely 
  rounded, 
  the 
  latter 
  rather 
  the 
  narrower 
  ; 
  

   ventral 
  margin 
  broadly 
  arcuate. 
  Posterior 
  dorsal 
  slope 
  straightish, 
  

   rather 
  more 
  oblique 
  than 
  in 
  front. 
  Luuule 
  narrowly 
  cordate, 
  gene- 
  

   rally 
  of 
  a 
  chocolate-brown 
  colour, 
  partly 
  so 
  or 
  merely 
  whitish. 
  

   Umbones 
  small, 
  red 
  at 
  the 
  tip. 
  Concentric 
  ridges 
  somewhat 
  flat- 
  

   tened, 
  crowded, 
  and 
  subnodulous 
  anteriorly 
  through 
  being 
  crossed 
  by 
  

   the 
  radiating 
  stride, 
  thin 
  and 
  lamellar 
  behind. 
  Striae 
  less 
  distinct 
  

   on 
  the 
  central 
  portion 
  of 
  the 
  valves 
  than 
  at 
  the 
  extremities, 
  and 
  

   finer 
  and 
  closer 
  together 
  down 
  the 
  posterior 
  side 
  than 
  elsewhere. 
  

   Interior 
  more 
  or 
  less 
  pinkish, 
  finely 
  crenulated 
  at 
  the 
  margin. 
  

   Pallial 
  sinus 
  moderate, 
  sharply 
  rounded. 
  Length 
  16 
  millim., 
  

   height 
  12^, 
  diameter 
  8. 
  

  

  Hub. 
  West 
  Island, 
  Prince 
  of 
  Wales 
  Channel, 
  and 
  Thursday 
  Island, 
  

   Torres 
  Straits, 
  4 
  fms. 
  {Go^ypinger). 
  

  

  This 
  species 
  is 
  somewhat 
  like 
  V. 
  (Chione) 
  mesodesma, 
  Quoy 
  and 
  

   Gaimard, 
  but 
  is 
  distinguished 
  by 
  its 
  greater 
  length 
  and 
  diff'orence 
  of 
  

   colour 
  in 
  the 
  interior. 
  It 
  is 
  also 
  not 
  so 
  high, 
  the 
  concentric 
  riblets 
  

   are 
  thin 
  and 
  lamellar 
  posteriorly 
  ; 
  and 
  the 
  presence 
  of 
  radiating 
  

   striae 
  at 
  once 
  separates 
  it 
  from 
  the 
  Xew-Zealand 
  form. 
  There 
  are 
  

   several 
  specimens 
  from 
  the 
  above 
  localities, 
  all 
  having 
  a 
  rosy 
  tip 
  to 
  

   the 
  beaks, 
  the 
  lunules 
  more 
  or 
  less 
  dark-coloured, 
  the 
  ridges 
  thin 
  

   posteriorly, 
  and 
  the 
  striae 
  in 
  the 
  same 
  region 
  finer 
  and 
  more 
  numerous 
  

   than 
  elsewhere. 
  

  

  6. 
  Venus 
  gladstonensis. 
  

  

  Angus, 
  Proc. 
  Zool. 
  Soc. 
  1872, 
  p. 
  612, 
  pi. 
  42. 
  fig. 
  8. 
  

  

  Hah. 
  Port 
  Curtis 
  (Anr/as 
  and 
  Coppinger). 
  

  

  This 
  species 
  is 
  remarkable 
  for 
  the 
  fineness 
  of 
  the 
  concentric 
  

   lamellae, 
  which 
  exhibit 
  the 
  radiating 
  slender 
  lirae 
  on 
  the 
  outer 
  side 
  

   as 
  is 
  the 
  case 
  with 
  other 
  species. 
  The 
  crenulation 
  of 
  the 
  inner 
  

   margin 
  of 
  the 
  valves 
  is 
  also 
  excessively 
  fine, 
  and 
  the 
  pallial 
  sinus 
  is 
  

   of 
  moderate 
  size 
  and 
  not 
  very 
  aciite. 
  

  

  7. 
  Venus 
  subnodulosa. 
  

  

  Hanley, 
  Cat. 
  Bivalve 
  Shells, 
  p. 
  300, 
  pi. 
  16. 
  fig. 
  19 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  

   fig. 
  102 
  ; 
  Deshayes, 
  Cat. 
  Conch. 
  Biv. 
  p. 
  143, 
  as 
  Chione. 
  

  

  Bah. 
  Philippine 
  Islands 
  (Hanlei/) 
  ; 
  Moreton 
  Bay 
  {Strange 
  in 
  coll. 
  

   Cuming); 
  Port 
  Curtis 
  (Cojijyinger). 
  

  

  This 
  s])ecics 
  is 
  remarkable 
  for 
  the 
  stoutness 
  of 
  the 
  concentric 
  

   ribs, 
  which 
  are 
  rendered 
  more 
  or 
  less 
  subnodosc 
  by 
  fine 
  radiating 
  

  

  