﻿CREPIDULA. 
  Panama 
  Shells. 
  • 
  449 
  

  

  341. 
  Calyptraea 
  umbrella. 
  

  

  Synonymy. 
  

  

  CalyptrcBa 
  umbrella 
  Desh. 
  in 
  Encyc. 
  Metli. 
  Vers. 
  II. 
  1Y3. 
  

  

  (1st 
  ser. 
  pag.) 
  . 
  . 
  - 
  . 
  1830. 
  

  

  rudis 
  Brod. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  35. 
  May 
  1834. 
  

  

  13rod. 
  in 
  Trans. 
  Zool. 
  Soc. 
  Lond. 
  I. 
  196. 
  

  

  pi. 
  27. 
  f.l. 
  1835. 
  

  

  umbrella 
  Lam. 
  An. 
  sans 
  Vert. 
  VII. 
  635. 
  No. 
  30. 
  

  

  Desh. 
  ed. 
  - 
  - 
  - 
  - 
  - 
  1838. 
  

   Lam. 
  An. 
  sans 
  Vert. 
  III. 
  Pt. 
  1. 
  p. 
  234. 
  

  

  No. 
  30. 
  (Desh. 
  ed. 
  tert.) 
  - 
  - 
  1841. 
  

  

  rudis 
  Rev. 
  Zool. 
  Cuv. 
  Soc. 
  July 
  1838. 
  

  

  (^Crucibulum) 
  rudis 
  y^oo(\.w&\di 
  Manual 
  Moll. 
  

  

  p. 
  152. 
  pi. 
  11. 
  f. 
  12. 
  - 
  1851. 
  

  

  Station. 
  — 
  Under 
  stones 
  ; 
  Cuming 
  ! 
  Broderip. 
  ^ 
  

  

  Habitat 
  — 
  Panama 
  and 
  Real 
  Llejos 
  : 
  Cuming 
  ! 
  Broderip 
  : 
  also 
  

   Rev^ 
  Zool. 
  

  

  Seas 
  of 
  Central 
  America 
  ; 
  Deshayes. 
  

  

  West 
  America 
  ; 
  Woodward. 
  

  

  Guayaquil 
  ; 
  Jay. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   Only 
  1 
  specimen 
  was 
  found. 
  

  

  342. 
  Calyptraea 
  unguis 
  I? 
  

  

  We 
  found 
  one 
  immature 
  specimen 
  which 
  may 
  belong 
  to 
  this 
  

   species. 
  

  

  343. 
  Crepidiila 
  cerithicola. 
  Nov. 
  sp. 
  

  

  Shell 
  ovate, 
  convex 
  : 
  posteriorly 
  whitish, 
  sometimes 
  with 
  a 
  

   broad 
  ray 
  of 
  dark 
  brownish 
  red 
  on 
  each 
  side 
  of 
  the 
  umbo 
  ; 
  

   anteriorly 
  subtransparent, 
  pale 
  brownish 
  red, 
  with 
  narrow 
  dark 
  

   rays 
  of 
  the 
  same 
  color 
  ; 
  sometimes 
  all 
  the 
  rays 
  are 
  confluent, 
  

   and 
  more 
  rarely 
  the 
  entire 
  shell 
  is 
  of 
  a 
  dark 
  brownish 
  red 
  ; 
  

   with 
  the 
  septum 
  white 
  : 
  smooth 
  : 
  apex 
  acute, 
  terminal 
  and 
  

   marginal, 
  a 
  little 
  dextrorsal 
  : 
  septum 
  slightly 
  angulated 
  along 
  

  

  