﻿S64: 
  Panama 
  SheUs. 
  MURiciDiS. 
  

  

  Pleuroioma 
  coUaris 
  Mull. 
  Synop. 
  Nov. 
  Test. 
  Viv. 
  p. 
  117. 
  May 
  1836, 
  

   Reeve 
  Conch. 
  Icon. 
  pi. 
  15. 
  f. 
  120. 
  July 
  1843, 
  

  

  Station. 
  — 
  ^Muddy 
  sand 
  at 
  the 
  depth 
  of 
  8 
  fathoms; 
  Cuming 
  E 
  

   Sowerby 
  : 
  also 
  Eeeve. 
  

  

  Habitat. 
  — 
  Bay 
  of 
  Caraccas 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  also 
  Eeeve. 
  

  

  "West 
  Columbia 
  ; 
  Jay. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  I 
  

   4 
  specimens 
  were 
  collected. 
  

  

  167. 
  Pleurotoma 
  concinna. 
  Nov. 
  sp. 
  

  

  Shell 
  fusiform 
  : 
  white, 
  tinged 
  more 
  or 
  less 
  with 
  reddish 
  

   "brown 
  : 
  with 
  numerous 
  crowded 
  small 
  ribs, 
  which 
  become 
  ob- 
  

   solete 
  near 
  the 
  labrum, 
  and 
  crowded 
  spiral 
  striae, 
  which 
  are 
  finer 
  

   on 
  the 
  spire 
  : 
  apex 
  acute 
  : 
  spire 
  with 
  moderately 
  convex 
  out- 
  

   lines: 
  whorls 
  eight, 
  angular 
  along 
  the 
  middle, 
  with 
  a 
  mode- 
  

   rately 
  impressed 
  suture 
  : 
  aperture 
  very 
  long 
  and 
  narrow 
  ; 
  la- 
  

   brum 
  very 
  much 
  thickened 
  a 
  little 
  behind 
  the 
  edge, 
  with 
  the 
  

   sinus 
  deep 
  and 
  very 
  near 
  the 
  suture 
  : 
  canal 
  scarcely 
  distinct 
  

   from 
  the 
  aperture. 
  It 
  resembles 
  P. 
  triiicea 
  Kiener, 
  and 
  may 
  be 
  

   a 
  Mangelia. 
  

  

  Mean 
  divergence 
  about 
  43° 
  ; 
  length 
  .42 
  inch 
  ; 
  breadth 
  .17 
  

   inch 
  ; 
  length 
  of 
  spire 
  .18 
  inch. 
  

  

  Station. 
  — 
  Unknown. 
  

  

  Habitat 
  — 
  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  — 
  1 
  specimen 
  was 
  obtained^ 
  

  

  168. 
  Pleurotoma 
  corrugata. 
  

  

  Synonymy. 
  

  

  Pleurotoma 
  corrugata 
  Sowb. 
  (non 
  Kiener) 
  in 
  Proc. 
  Zool. 
  

  

  SoG. 
  Lond. 
  p. 
  137. 
  - 
  - 
  - 
  Dec. 
  1833. 
  

   turricula 
  Sowb. 
  (non 
  Macgillivray) 
  in 
  Proc. 
  

  

  Zool. 
  Soc. 
  Lond. 
  p. 
  137. 
  - 
  - 
  Dec. 
  183?. 
  

   corrugata 
  j 
  ^^^^ 
  g 
  ^^^^ 
  ^^^^^ 
  ^.^^ 
  j 
  ^^ 
  ^ 
  jg^g 
  

   turricula 
  \ 
  

  

  