﻿CHAMA. 
  Panama 
  Shells. 
  477 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  0. 
  B. 
  A. 
  ! 
  

   2 
  specimens 
  were 
  obtained. 
  

  

  Family— 
  CHAMID^. 
  

   405. 
  Chama 
  JBiiddiana. 
  Nov. 
  sp. 
  

  

  Shell 
  orbicular 
  or 
  subtriangular 
  : 
  exterior 
  surface 
  and 
  inner 
  

   margins 
  purplisb 
  red, 
  with 
  the 
  spines 
  pure 
  white: 
  surface 
  

   uneven, 
  with 
  interrupted 
  radiating 
  striae 
  ; 
  upper 
  valve 
  orna- 
  

   mented 
  with 
  a 
  few 
  radiating 
  series 
  of 
  short 
  thick 
  triangular 
  

   vaulted 
  spines 
  : 
  lower 
  valve 
  attached 
  by 
  about 
  two-thirds 
  to 
  

   three-quarters 
  of 
  its 
  surface, 
  the 
  rest 
  being 
  like 
  the 
  upper 
  valve, 
  

   but 
  with 
  the 
  dentiform 
  spines 
  smaller 
  : 
  within 
  both 
  valves 
  are 
  

   deeply 
  and 
  finely 
  crenulated 
  at 
  the 
  junction 
  of 
  the 
  white 
  sur- 
  

   face 
  and 
  red 
  margin 
  : 
  beak 
  submarginal. 
  Easily 
  distinguished 
  

   from 
  C. 
  Pacijica 
  and 
  C. 
  Broderipu 
  by 
  the 
  small 
  thick 
  dentiform 
  

   triangular 
  white 
  spines. 
  

  

  Diameter 
  about 
  3 
  inches. 
  

  

  Station. 
  — 
  On 
  ledges 
  of 
  rocks, 
  a 
  little 
  above 
  low 
  water 
  mark. 
  

   The 
  lower 
  valve 
  is 
  so 
  firmly 
  attached 
  as 
  to 
  render 
  it 
  difficult 
  to 
  

   obtain 
  specimens 
  entire 
  without 
  the 
  use 
  of 
  mineralogical 
  tools. 
  

  

  Habitat. 
  — 
  Gruaymas 
  ; 
  Lt. 
  Green 
  ! 
  Mus. 
  Essex 
  Inst. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   6 
  specimens 
  were 
  obtained. 
  

   Named 
  in 
  honor 
  of 
  Dr. 
  B. 
  W. 
  Budd 
  of 
  New 
  York 
  city. 
  

  

  406. 
  Chama 
  corrugrata 
  I 
  

  

  Synonymy. 
  

  

  Chama 
  corrugata 
  Brod. 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  150. 
  Dec. 
  1834. 
  

  

  Brod. 
  in 
  Trans. 
  Zool. 
  Soc. 
  Lond. 
  I. 
  305. 
  

  

  pi. 
  31. 
  f. 
  7. 
  1835. 
  

  

  ■ 
  Hanley 
  Descr. 
  Catal. 
  p. 
  229. 
  1845 
  ? 
  

  

  Reeve 
  Conch. 
  Icon. 
  pi. 
  2. 
  f. 
  9. 
  Dec. 
  1846. 
  

  

  Possibly 
  our 
  shell 
  may 
  be 
  a 
  large 
  specimen 
  of 
  C. 
  Panamen- 
  

  

  