﻿LITTORINA. 
  Panama 
  Shells. 
  397 
  

  

  236. 
  liittorina 
  fasciata. 
  

  

  Synonymy. 
  

  

  Littorina 
  fasciata 
  Gray 
  in 
  Zool. 
  Beech. 
  Voy. 
  p. 
  139. 
  1839. 
  

  

  Siebold 
  in 
  Wiegm. 
  Archiv. 
  p. 
  209. 
  1839. 
  

  

  Phil. 
  Abbild. 
  11. 
  p. 
  37. 
  pi. 
  5. 
  f. 
  1, 
  2. 
  Apr. 
  1847. 
  

  

  Station. 
  — 
  This 
  species 
  was 
  found, 
  with 
  L. 
  varia^ 
  Sowb., 
  on 
  

   the 
  trunks 
  and 
  branches 
  of 
  small 
  trees, 
  which 
  were 
  growing 
  

   between 
  half 
  tide 
  and 
  high 
  water 
  levels. 
  

  

  Habitat. 
  — 
  Pacific 
  Ocean 
  ? 
  Gray. 
  

  

  Tumbez, 
  Peru 
  ; 
  Cuming 
  ! 
  Philippi. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   160 
  specimens 
  were 
  collected. 
  

  

  237. 
  Eiittorina 
  (?) 
  ibveata. 
  Nov. 
  sp. 
  

  

  Shell 
  globose 
  conic 
  : 
  dingy 
  white, 
  with 
  a 
  very 
  broad 
  dark 
  

   brown 
  spiral 
  stripe 
  occupying 
  the 
  middle 
  of 
  the 
  last 
  and 
  more 
  

   or 
  less 
  of 
  the 
  upper 
  whorls 
  : 
  with 
  several 
  inequidistant 
  spiral 
  

   raised 
  lines 
  : 
  apex 
  subacute 
  : 
  spire 
  with 
  the 
  outlines 
  moderately 
  

   curvilinear 
  : 
  whorls 
  nearly 
  four, 
  subangular, 
  with 
  a 
  distinct 
  

   suture 
  ; 
  last 
  whorl 
  angular 
  below 
  the 
  middle 
  : 
  aperture 
  sub- 
  

   ovate 
  : 
  labrum 
  very 
  sharp, 
  but 
  much 
  thickened 
  a 
  little 
  behind 
  

   the 
  edge 
  : 
  columella 
  dilated 
  and 
  thickened 
  : 
  region 
  around 
  the 
  

   umbilicus 
  much 
  excavated, 
  and 
  forming 
  with 
  the 
  umbilicus 
  a 
  

   funnel-shaped 
  pit. 
  

  

  Mean 
  divergence 
  about 
  80°; 
  length 
  .19 
  inch; 
  breadth 
  .15 
  

   inch; 
  length 
  of 
  spire 
  .08 
  inch. 
  

  

  The 
  generic 
  character 
  of 
  this 
  species 
  is 
  doubtful. 
  It 
  may 
  pos- 
  

   sibly 
  be 
  a 
  Narica. 
  

  

  Station. 
  — 
  Unknown. 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

  

  2 
  specimens 
  were 
  found 
  in 
  the 
  sand. 
  

  

  