﻿PLEUROTOMA. 
  Panama 
  Shells. 
  371 
  

  

  Pleurotoma 
  rudis 
  Miill. 
  Synop. 
  Nov. 
  Test. 
  Viv. 
  p. 
  109. 
  May 
  1836. 
  

   Reeve 
  Concli. 
  Icon. 
  pi. 
  Y. 
  f. 
  53. 
  Mar. 
  1843. 
  

  

  Station. 
  — 
  Under 
  stones 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  also 
  Eeeve 
  : 
  

   also 
  Miiller. 
  

  

  Habitat. 
  — 
  Monte 
  Christi 
  ; 
  Cuming 
  ! 
  Sowerby 
  ; 
  also 
  Reeve 
  : 
  

   also 
  Miiller. 
  

  

  Monte 
  Christi 
  ; 
  Jaj. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   2 
  specimens 
  were 
  obtained. 
  

  

  182. 
  Pleurotoma 
  rustica. 
  

  

  Synonymy. 
  

  

  Pleurotoma 
  rustica 
  Sowb. 
  in 
  Proc. 
  Zool. 
  Soe. 
  Lond. 
  p. 
  138. 
  Dec. 
  1833. 
  

  

  Mull. 
  Synop. 
  Nov. 
  Test. 
  Viv. 
  p. 
  116. 
  May 
  1836. 
  

  

  thiarella 
  Kiener 
  Iconog. 
  p. 
  56. 
  pi. 
  23. 
  f. 
  2. 
  ? 
  

  

  rustica 
  Reeve 
  Conch. 
  Icon. 
  pi. 
  11. 
  f. 
  91. 
  May 
  1843. 
  

  

  Mr. 
  Reeve's 
  reference 
  to 
  Proc. 
  Z. 
  S. 
  1843, 
  is 
  a 
  misprint 
  for 
  

   1833. 
  

  

  Station. 
  — 
  Under 
  stones 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  also 
  Reeve 
  : 
  

   also 
  Miiller. 
  We 
  found 
  it 
  under 
  stones 
  near 
  low 
  water 
  mark. 
  

  

  Habitat. 
  — 
  Xipixapi 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  also 
  Reeve 
  : 
  also 
  

   Miiller. 
  

   West 
  Columbia 
  ; 
  Jay. 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   10 
  specimens 
  were 
  collected, 
  most 
  of 
  them 
  more 
  strongly 
  

   striated 
  spirally 
  on 
  the 
  last 
  whorl 
  than 
  is 
  represented 
  in 
  the 
  

   Conch. 
  Icon. 
  

  

  183. 
  Pleurotoma 
  striosa. 
  Nov. 
  sp. 
  

  

  Shell 
  slender 
  : 
  dingy 
  white, 
  with 
  a 
  more 
  or 
  less 
  distinct 
  

   brown 
  spiral 
  stripe 
  on 
  the 
  last 
  whorl 
  issuing 
  from 
  the 
  upper 
  

   part 
  of 
  the 
  aperture 
  : 
  with 
  indistinct 
  crowded 
  spiral 
  striaB, 
  with 
  

   ten 
  or 
  twelve 
  very 
  slender 
  ribs 
  on 
  each 
  whorl 
  : 
  apex 
  acute 
  : 
  

  

  