﻿CREPIDULA. 
  Panama 
  Shells. 
  451 
  

  

  Calyplrcea 
  [Crepidula) 
  excavata 
  Miill. 
  Synop. 
  Nov. 
  Test. 
  

  

  Viv. 
  p. 
  150. 
  - 
  - 
  May 
  183G. 
  

   Crepidula 
  Lam. 
  An, 
  sans 
  Vert. 
  VII. 
  

  

  649. 
  No. 
  19. 
  (Desh. 
  ed.) 
  1838. 
  

   Lara. 
  An. 
  sans. 
  Vert. 
  IIL 
  Pt. 
  1. 
  

  

  p.239.No. 
  19. 
  (Desh.ed.tert.) 
  1841. 
  

   /Station. 
  — 
  Unknown. 
  

  

  Habitat. 
  — 
  Eeal 
  Llejos 
  ; 
  Cuming 
  ! 
  Broderip. 
  

  

  Chili; 
  Deshayes. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   1 
  specimen 
  was 
  obtained. 
  

  

  In 
  the 
  absence 
  of 
  testimony, 
  the 
  habitat 
  mentioned 
  by 
  

   Deshayes 
  must 
  be 
  considered 
  as 
  doubtful. 
  

  

  846. 
  Crepidula 
  hepatical 
  

  

  /Synonymy. 
  

  

  Crepidula 
  hepatica 
  Desh. 
  Encyc. 
  Meth. 
  Vers. 
  IL 
  26. 
  (2d 
  ser. 
  pag.) 
  1830. 
  

  

  Lam. 
  An. 
  sans 
  Vert. 
  VIL 
  646. 
  No. 
  12. 
  

  

  (Desh. 
  ed.) 
  1838. 
  

  

  Lam. 
  An. 
  sans 
  Vert. 
  IIL 
  Pt. 
  1. 
  p. 
  238. 
  

  

  No. 
  12. 
  (Desh. 
  ed.tert.) 
  - 
  - 
  - 
  1841. 
  

   Menke 
  in 
  Zeitsch. 
  Mai. 
  p. 
  184. 
  - 
  - 
  Dec. 
  1847. 
  

  

  Our 
  specimens 
  have 
  an 
  epidermis, 
  which 
  is 
  more 
  or 
  less 
  

   lamellar 
  or 
  pilose. 
  Deshayes 
  describes 
  the 
  shell 
  as 
  having 
  a 
  

   smooth 
  exterior 
  surface, 
  but 
  Menke 
  says 
  " 
  confertim 
  distinct^ 
  

   porcata." 
  Our 
  shells 
  exhibit 
  a 
  variation 
  in 
  the 
  character 
  of 
  the 
  

   surface, 
  which 
  reconciles 
  this 
  apparent 
  discrepancy. 
  A 
  variety 
  

   is 
  very 
  convex. 
  

  

  Station. 
  — 
  Adhering 
  to 
  Strombus 
  Peruvianus^ 
  q. 
  v. 
  ; 
  also 
  to 
  

   Purpura 
  tecta, 
  q. 
  v. 
  

  

  Another 
  specimen 
  is 
  on 
  a 
  Conus 
  gladiator, 
  and 
  is 
  very 
  

   convex 
  ; 
  probably 
  in 
  consequence 
  of 
  the 
  very 
  convex 
  surface 
  to 
  

   which 
  it 
  adheres. 
  Some 
  specimens 
  are 
  longitudinally 
  recurved 
  

   but 
  laterally 
  very 
  convex 
  ; 
  conforming 
  to 
  the 
  surface 
  on 
  which 
  

   they 
  grew. 
  

  

  