﻿400 
  Panama 
  Shells. 
  littokinid-s;. 
  

  

  This 
  species 
  is 
  probably 
  rare. 
  With 
  much 
  labor 
  we 
  obtained 
  

   11 
  specimens 
  in 
  the 
  mangrove 
  thicket, 
  which 
  is 
  about 
  two 
  

   miles 
  east 
  of 
  Panama. 
  Some 
  of 
  them 
  are 
  fully 
  equal 
  in 
  size 
  and 
  

   beauty 
  to 
  the 
  specimen 
  which 
  is 
  figured 
  by 
  Dr. 
  Philippi. 
  The 
  

   largest 
  is 
  1.55 
  inch 
  long 
  and 
  1.15 
  inch 
  wide. 
  

  

  241. 
  liittorina 
  pimcticulata. 
  

  

  Synonymy. 
  

  

  Littorina 
  puncticulata 
  Phil. 
  Abbild. 
  II. 
  pi. 
  4. 
  f. 
  15. 
  March 
  1847. 
  

  

  Station. 
  — 
  On 
  fragments 
  of 
  rocks 
  at 
  high 
  water 
  mark. 
  

  

  Habitat. 
  — 
  Eeal 
  Llejos 
  ; 
  Philippi. 
  

  

  Taboga 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   80 
  specimens 
  were 
  collected. 
  

  

  242. 
  liittorina 
  varia. 
  

  

  Synonymy. 
  

  

  Littorina 
  varia 
  Sowb. 
  Gen. 
  No. 
  37. 
  f. 
  4. 
  1824. 
  

  

  Reeve 
  Syst. 
  Conch, 
  pi. 
  222. 
  f. 
  4. 
  1842. 
  

  

  Phil. 
  Abbild. 
  11. 
  PI. 
  1. 
  f. 
  2, 
  3. 
  Aug. 
  1846. 
  

  

  Station. 
  — 
  This 
  species 
  was 
  found 
  on 
  the 
  trunks 
  and 
  branches 
  

   of 
  small 
  trees 
  which 
  were 
  growing 
  between 
  half 
  tide 
  and 
  high 
  

   water 
  levels. 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  Sowerby. 
  

  

  Panama, 
  Guayaquil, 
  Cusma 
  (Peru) 
  ; 
  Philippi. 
  

   "Chiloe 
  (?) 
  nach 
  einer 
  brieflichen 
  Angabe 
  von 
  

  

  Herrn 
  Petit;" 
  Philippi. 
  

   Peru; 
  Jay, 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   800 
  specimens 
  were 
  collected. 
  

  

  Since, 
  this 
  species 
  inhabits 
  the 
  middle 
  regions 
  of 
  the 
  marine 
  

   zoological 
  province 
  on 
  the 
  west 
  side 
  of 
  tropical 
  America, 
  it 
  is 
  

   extremely 
  improbable 
  that 
  it 
  should 
  also 
  inhabit 
  a 
  region 
  in 
  so 
  

  

  