﻿AND 
  OTHER 
  FAMILIES. 
  77 
  

  

  like 
  that 
  species, 
  curve 
  towards 
  the 
  cavity 
  of 
  the 
  beaks 
  ; 
  it 
  stretches 
  in 
  

   a 
  point 
  towards 
  the 
  centre 
  of 
  the 
  cavity 
  of 
  the 
  disk. 
  In 
  general 
  out- 
  

   line 
  it 
  resembles 
  the 
  An. 
  Patagonia 
  (Lam.), 
  but 
  diners 
  in 
  being 
  less 
  

   rotund, 
  less 
  inflated, 
  and 
  in 
  the 
  nacre 
  being 
  white. 
  

  

  Anodonta 
  Blainvilliana. 
  Plate 
  XII. 
  fig. 
  35. 
  

  

  Testa 
  ovatd, 
  inflatd, 
  valde 
  insequilaterali, 
  antice 
  angulatd, 
  postice 
  latissimd, 
  

   ad 
  marginem 
  anteriorem 
  hianti; 
  cicatrice 
  marginali 
  lata 
  et 
  postice 
  valde 
  incurva 
  ; 
  

   valvulis 
  subcrassis 
  ; 
  natibus 
  prominulis 
  ; 
  margine 
  dorsali 
  recta; 
  margaritd 
  sal- 
  

   monis 
  colore 
  tinctd. 
  

  

  Shell 
  ovate, 
  inflated, 
  very 
  inequilateral, 
  angular 
  before, 
  very 
  wide 
  posteriorly, 
  gaping 
  

   at 
  the 
  anterior 
  and 
  posterior 
  margins; 
  palleal 
  cicatrix 
  broad 
  and 
  much 
  incurved 
  poste- 
  

   riorly; 
  valves 
  rather 
  thick 
  ; 
  beaks 
  somewhat 
  prominent; 
  dorsal 
  line 
  straight; 
  nacre 
  

   salmon 
  and 
  pearly. 
  

  

  Hab. 
  Chili? 
  

  

  My 
  Cabinet. 
  

   Diam. 
  1*3, 
  Length 
  1-9, 
  Breadth 
  3 
  inches. 
  

  

  Shell 
  ovate, 
  inflated, 
  very 
  inequilateral, 
  angular 
  before, 
  very 
  wide 
  

   posteriorly, 
  the 
  greatest 
  length 
  being 
  perpendicular 
  from 
  the 
  extreme 
  

   posterior 
  end 
  of 
  the 
  ligament 
  to 
  the 
  basal 
  margin, 
  gaping 
  much 
  at 
  the 
  

   anterior 
  margin, 
  and 
  rather 
  less 
  at 
  the 
  posterior 
  margin 
  ; 
  substance 
  of 
  

   the 
  shell 
  somewhat 
  thick 
  ; 
  beaks 
  rather 
  prominent 
  ; 
  dorsal 
  line 
  straight, 
  

   having 
  a 
  slight 
  elevation 
  under 
  the 
  beak 
  like 
  an 
  incipient 
  tooth 
  ; 
  ante- 
  

   rior 
  cicatrices 
  complicated 
  but 
  distinct 
  ; 
  posterior 
  cicatrices 
  wide 
  and 
  

   confluent 
  ; 
  dorsal 
  cicatrices 
  numerous 
  and 
  stretched 
  in 
  a 
  line 
  across 
  the 
  

   cavity 
  of 
  the 
  beaks 
  ; 
  marginal 
  cicatrix 
  wide, 
  deep 
  and 
  much 
  incurved 
  

   near 
  to 
  the 
  posterior 
  cicatrix; 
  nacre 
  salmon, 
  beautifully 
  pearly 
  and 
  iri- 
  

   descent. 
  

  

  Remarks. 
  — 
  I 
  accidentally 
  met 
  with 
  this 
  interesting 
  shell 
  at 
  a 
  shop 
  

  

  in 
  Havre 
  last 
  October, 
  a 
  few 
  days 
  previously 
  td 
  my 
  embarkation. 
  The 
  

  

  two 
  valves 
  belong 
  to 
  different 
  individuals, 
  but 
  they 
  very 
  nearly 
  match. 
  

  

  They 
  have 
  both 
  been 
  slightly 
  mutilated 
  by 
  an 
  attempt 
  to 
  beautify 
  

  

  vol. 
  v. 
  — 
  u 
  

  

  