﻿MoUusca 
  from 
  the 
  North-west 
  Falklands. 
  135 
  

  

  calcareo-alba, 
  parura 
  nitente, 
  cardine 
  valvse 
  sinistrse 
  deiite 
  

   spathulato 
  magao, 
  dextrae 
  fossa 
  congruente 
  prsedito, 
  ligamento 
  

   iuterno. 
  

   Alt. 
  11, 
  lat. 
  16 
  mm. 
  

  

  Hah. 
  "N.W. 
  Falklands/' 
  

  

  AVe 
  can 
  find 
  no 
  Mya, 
  till 
  now, 
  recorded 
  from 
  the 
  Southern 
  

   Hemisphere. 
  This 
  new 
  form 
  much 
  resembles, 
  at 
  first 
  sight, 
  

   a 
  miniature 
  M. 
  truncata, 
  L., 
  but, 
  as 
  first 
  pointed 
  out 
  to 
  us 
  by 
  

   Mr. 
  Edgar 
  Smith, 
  the 
  concentric 
  lines 
  and 
  sculpture 
  anteriorly 
  

   are 
  closer 
  and 
  altogether 
  different 
  in 
  character. 
  

  

  In 
  1898 
  we 
  published 
  the 
  description, 
  under 
  the 
  name 
  

   Thracia 
  antarctica, 
  o? 
  a 
  shell 
  from 
  Lively 
  Island, 
  E. 
  Falk- 
  

   lands, 
  collected 
  by 
  Miss 
  Cobb 
  *. 
  We 
  think 
  it 
  possible 
  this 
  

   may 
  be 
  the 
  same 
  species. 
  It 
  was 
  rather 
  larger, 
  ruder 
  in 
  build, 
  

   and 
  distorted, 
  so 
  that 
  we 
  considered 
  it, 
  at 
  the 
  time, 
  most 
  allied 
  

   to 
  Thracia 
  distorta, 
  Phil. 
  The 
  discovery 
  of 
  a 
  good 
  series 
  

   of 
  specimens 
  is 
  much 
  to 
  be 
  desired, 
  both 
  of 
  this 
  and 
  the 
  Mt/a, 
  

   when 
  the 
  question 
  may 
  be 
  cleared 
  up. 
  

  

  Saxicava 
  arctica 
  (L.) 
  . 
  

  

  Mya 
  arctica, 
  Linne, 
  Syst. 
  Nat. 
  p. 
  1113. 
  

  

  Saxicava 
  arctica 
  (L.), 
  Forbes 
  & 
  Hanley, 
  i. 
  p. 
  141, 
  pi. 
  vi. 
  figs. 
  4-6. 
  

  

  Var. 
  antarctica^ 
  Phil. 
  

  

  Saxicava 
  antarctica, 
  Philippi, 
  Archiv 
  fiir 
  Naturg. 
  (1845) 
  ; 
  Trans. 
  

   Royal 
  Soc. 
  Edinb. 
  xlvi. 
  p. 
  151 
  (1907). 
  

  

  Port 
  Egremont, 
  on 
  the 
  beach 
  after 
  a 
  gale, 
  also 
  at 
  the 
  roots 
  

   of 
  Macrocystis 
  and 
  other 
  fucoid 
  algse. 
  

  

  Fam. 
  Solenidae. 
  

  

  Solen 
  r)iacha, 
  Mol. 
  

  

  Solen 
  macJia, 
  Molina, 
  Hist. 
  Nat. 
  du 
  Chile, 
  p. 
  178 
  (1787) 
  ; 
  Gmelin, 
  

  

  Syst. 
  Nat. 
  p. 
  3226; 
  D'Orbigny, 
  Amer. 
  Merid. 
  p. 
  505 
  j 
  Gay, 
  Hist, 
  de 
  

  

  Chile, 
  Zool. 
  vol.Yiii. 
  p. 
  369, 
  pi. 
  viii. 
  tig. 
  6. 
  

   Solen 
  gladiolus, 
  Gray, 
  in 
  Beechey's 
  Voyage 
  ' 
  Blossom,' 
  p. 
  153, 
  pi. 
  xliii. 
  

  

  tig. 
  4. 
  

   Solen 
  macha, 
  Reeve, 
  Conch. 
  Icon., 
  Solen, 
  fig. 
  28 
  ; 
  " 
  Oken," 
  Martini 
  & 
  

  

  Chemnitz, 
  Conch. 
  Cab. 
  Taf. 
  viii. 
  p. 
  26, 
  fig. 
  5 
  (1888). 
  

  

  Sandy 
  beach 
  on 
  Pebble 
  Island, 
  after 
  severe 
  shore-gales. 
  

  

  "This 
  beach 
  faces 
  due 
  north, 
  and 
  appears 
  to 
  be 
  tlie 
  only 
  

   locality 
  for 
  this 
  species 
  in 
  the 
  Faiklanis. 
  It 
  was 
  iuipossiole 
  

   to 
  hunt 
  for 
  them, 
  and 
  so 
  procure 
  live 
  examples, 
  owing 
  to 
  

   the 
  heavy 
  surf." 
  — 
  R. 
  V. 
  

  

  A 
  very 
  fine 
  and 
  large 
  species. 
  

  

  * 
  Journ. 
  of 
  Conch, 
  ix. 
  p. 
  105, 
  pi. 
  i. 
  figs. 
  13, 
  13 
  a 
  (1898). 
  

  

  