﻿462 
  Panama 
  Shells. 
  FissuRELLiDiB, 
  

  

  Fissurella 
  nigi-opundata 
  Sowb. 
  Conch. 
  111. 
  No. 
  32. 
  pi, 
  V5. 
  f. 
  51. 
  1841. 
  

   Eeeve 
  Conch. 
  Icon. 
  pi. 
  4. 
  f. 
  8. 
  Aug. 
  1849. 
  

  

  Station. 
  — 
  Under 
  stones 
  on 
  the 
  shore 
  ; 
  Cuming 
  1 
  Sowerby 
  : 
  

   also 
  Eeeve. 
  

  

  Our 
  specimens 
  were 
  found 
  on 
  rocks 
  at 
  and 
  below 
  half 
  tide 
  level. 
  

   Some 
  of 
  them 
  have 
  their 
  outlines 
  singularly 
  modified 
  by 
  the 
  

   surface 
  of 
  the 
  rugged 
  rocks 
  on 
  which 
  they 
  were 
  living. 
  

  

  Habitat. 
  — 
  Gallapago 
  Is., 
  and 
  Lobos 
  I. 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  

   also 
  Eeeve 
  : 
  also 
  Miiller. 
  

   Gallapago 
  Is. 
  ; 
  Jay. 
  

   Taboga 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   We 
  collected 
  95 
  specimens. 
  Most 
  of 
  them 
  are 
  elongated 
  like 
  

   the 
  figure 
  in 
  the 
  Conch. 
  Illust., 
  and 
  are 
  narrower 
  than 
  the 
  figure 
  

   in 
  the 
  Conch. 
  Icon. 
  

  

  860. 
  Fissurella 
  ostrina. 
  

  

  Synonymy. 
  

   Fissurella 
  ostrina 
  Reeve 
  Conch. 
  Icon. 
  pi. 
  14. 
  f. 
  106. 
  Aug. 
  1850. 
  

  

  Station. 
  — 
  Unknown. 
  

  

  Habitat. 
  — 
  Unknown 
  ; 
  Eeeve. 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   3 
  specimens 
  were 
  found 
  near 
  Panama. 
  

  

  361. 
  Fissurella 
  virescens. 
  

  

  Synonymy. 
  

  

  Fissurella 
  virescens 
  Sowb. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond, 
  p. 
  125. 
  Nov. 
  1834. 
  

  

  ■ 
  Miill. 
  Synop. 
  Nov, 
  Test. 
  Viv. 
  p. 
  154. 
  May 
  1836. 
  

  

  Sowb. 
  Conch. 
  Illust. 
  No. 
  31. 
  pi. 
  73. 
  f. 
  37. 
  1841. 
  

  

  Reeve 
  Conch. 
  Icon. 
  pi. 
  4. 
  f. 
  12. 
  Aug. 
  1849. 
  

  

  Station. 
  — 
  In 
  exposed 
  situations 
  at 
  low 
  water 
  ; 
  Cuming 
  ! 
  

   Sowerby. 
  In 
  exposed 
  situations 
  on 
  rocks 
  at 
  low 
  water 
  ; 
  Cum- 
  

   ing 
  ! 
  Eeeve. 
  

  

  Our 
  specimens 
  were 
  found 
  on 
  a 
  ledge 
  of 
  rather 
  smooth 
  

   rocks, 
  between 
  half 
  tide 
  and 
  low 
  water 
  mark, 
  in 
  a 
  place 
  

   somewhat 
  exposed 
  to 
  the 
  sea. 
  

  

  