﻿COLUMBELLA. 
  Panama 
  Shells^ 
  323 
  

  

  Acapulco; 
  Lesson. 
  

   Payta 
  ; 
  Fontaine 
  ! 
  D'Orbigny. 
  

   Mazatlan 
  ; 
  Melcliers 
  ! 
  Menke. 
  

   Acapulco 
  ; 
  Jay. 
  

  

  Mazatlan 
  ; 
  Lt. 
  Green 
  ! 
  Gould 
  MSS. 
  

   Taboga 
  ; 
  C. 
  B. 
  A- 
  ! 
  

   We 
  obtained 
  only 
  1 
  specimen. 
  

  

  103. 
  Coliiinbella 
  tesselata. 
  Nov. 
  sp. 
  

  

  Shell 
  rather 
  long 
  ovate 
  : 
  dark 
  sea-green, 
  tinged 
  with 
  black 
  

   or 
  brown, 
  fading 
  to 
  a 
  brownish 
  red 
  ; 
  more 
  or 
  less 
  tesselated 
  

   with 
  nearly 
  quadrangular 
  white 
  spots 
  : 
  with 
  about 
  fifteen 
  stout 
  

   approximate 
  ribs, 
  which 
  lean 
  forward, 
  and 
  which 
  are 
  obsolete 
  

   on 
  the 
  back 
  of 
  the 
  last 
  whorl 
  ; 
  with 
  all 
  the 
  surface 
  ridged 
  by 
  

   strongly 
  impressed 
  revolving 
  strice 
  : 
  apex 
  acute 
  : 
  spire 
  conic 
  : 
  

   whorls 
  eight, 
  scarcely 
  convex, 
  with 
  a 
  distinct 
  suture 
  : 
  aperture 
  

   rather 
  long 
  : 
  labrum 
  variciform, 
  thick 
  behind, 
  a 
  little 
  sinuate 
  

   posteriorly, 
  with 
  three 
  or 
  four 
  granules 
  inside 
  : 
  columellar 
  lip 
  

   slightly 
  granulous. 
  

  

  Mean 
  divergence 
  about 
  48° 
  ; 
  length, 
  .225 
  inch 
  ; 
  breadth, 
  

   .105 
  inch; 
  length 
  of 
  spire, 
  .13 
  inch. 
  

  

  This 
  species 
  resembles 
  the 
  small 
  variety 
  of 
  C. 
  nigricans. 
  It 
  

   also 
  resembles 
  C. 
  lentiginosa 
  Hinds 
  (Zool. 
  Sulph. 
  Moll. 
  pi. 
  10. 
  

   f. 
  21, 
  22), 
  in 
  coloring 
  and 
  sculpture 
  ; 
  but 
  the 
  latter 
  is 
  repre- 
  

   sented 
  as 
  being 
  much 
  wider 
  and 
  as 
  having 
  a 
  short 
  spire. 
  

  

  /Station. 
  — 
  This 
  species 
  was 
  found 
  under 
  stones, 
  near 
  low 
  

   water 
  mark. 
  

  

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

   We 
  collected 
  27 
  specimens. 
  

  

  104. 
  Coliiinbella 
  turrita. 
  

  

  jSynonymy. 
  

   Columbella 
  turrita 
  Sowb. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  115. 
  June, 
  1832. 
  

  

  