﻿478 
  Panama 
  /Shells. 
  ARCID^. 
  

  

  sis 
  Keeve. 
  Having 
  only 
  2 
  odd 
  valves 
  witli 
  an 
  eroded 
  surface, 
  

   we 
  are 
  unable 
  to 
  determine 
  the 
  species 
  with 
  confidence. 
  

  

  Station. 
  — 
  Attached 
  to 
  stones 
  at 
  low 
  water 
  ; 
  Cuming 
  ! 
  Brode- 
  

   rip. 
  Under 
  stones 
  ; 
  Cuming 
  ! 
  Eeeve. 
  

  

  Habitat. 
  — 
  Eeal 
  Llejos; 
  Cuming! 
  Broderip: 
  also 
  Reeve. 
  

  

  Central 
  America 
  ; 
  Hanley. 
  

  

  Real 
  Llejos 
  ; 
  Jay. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   We 
  found 
  only 
  2 
  valves. 
  

  

  407. 
  Cliama 
  echiiiata. 
  

  

  /Synonymy. 
  

  

  Ckama 
  echinata 
  Brod. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  150. 
  Dec. 
  1834. 
  

  

  Brod. 
  in 
  Trans. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  305. 
  pi. 
  39. 
  

  

  f. 
  5-1. 
  1835. 
  

  

  Reeve 
  Conch. 
  Icon, 
  pi. 
  V. 
  f. 
  35. 
  junior. 
  Jan. 
  1847. 
  

  

  Station. 
  — 
  At 
  low 
  water, 
  attached 
  to 
  rocks 
  ; 
  Cuming 
  ! 
  Broderip 
  : 
  

   also 
  Reeve. 
  On 
  rocks 
  near 
  low 
  water 
  mark. 
  

  

  Habitat. 
  — 
  Puerto 
  Portrero 
  ; 
  Cuming 
  ! 
  Broderip 
  : 
  also 
  Reeve. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   15 
  specimens 
  were 
  obtained. 
  

  

  Family— 
  ARCID^. 
  

  

  408. 
  IVucula 
  Dlenensis. 
  

  

  Synonymy. 
  

  

  Nucula 
  Elenensis 
  Sowb. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  198. 
  Dec, 
  1832. 
  

  

  Mull, 
  Syn, 
  Test. 
  Viv. 
  p, 
  191. 
  1836. 
  

  

  Sowb. 
  Conch. 
  111. 
  No. 
  19, 
  pi. 
  15. 
  f. 
  14. 
  1841. 
  

  

  Reeve 
  Conch. 
  Syst. 
  pi, 
  85. 
  f, 
  14, 
  Sept. 
  1841. 
  

  

  Hanley 
  Descr. 
  Catal. 
  p. 
  169. 
  1845? 
  

  

  With 
  some 
  hesitation 
  we 
  have 
  referred 
  our 
  specimens 
  to 
  this 
  

   species, 
  although 
  we 
  cannot 
  detect 
  the 
  " 
  marginibus 
  crenulatis." 
  

  

  