﻿AVICULA. 
  Panama 
  Shells. 
  473 
  

  

  Station. 
  — 
  Sandy 
  mud, 
  12 
  to 
  20 
  fathoms 
  ; 
  Cuming 
  ! 
  SoAverby. 
  

  

  Habitat. 
  — 
  Panama 
  and 
  Bay 
  of 
  Caraccas 
  ; 
  Cuming 
  ! 
  Sowerby 
  : 
  

   also 
  Orbigny. 
  

   Panama 
  ; 
  C, 
  B. 
  A. 
  ! 
  

   We 
  found 
  1 
  entire 
  shell 
  and 
  3 
  odd 
  valves. 
  

  

  390. 
  liinia 
  Pacifica. 
  

  

  Synonymy. 
  

  

  Lima 
  arcuata 
  Sowb. 
  (non 
  Geinitz 
  1840) 
  Thes. 
  Conch, 
  p. 
  86. 
  

  

  No. 
  15. 
  pi. 
  22. 
  f. 
  41-2. 
  - 
  - 
  - 
  - 
  1843. 
  

  

  Hanley 
  Descr. 
  Catal. 
  p. 
  268. 
  1845 
  ? 
  

  

  Pacifica 
  Orb. 
  Voy. 
  Amer. 
  Merid. 
  Moll. 
  p. 
  654. 
  1846. 
  

  

  Station. 
  — 
  Under 
  stones 
  at 
  the 
  low 
  water 
  mark 
  of 
  the 
  spring 
  

   tides. 
  

  

  Habitat. 
  — 
  Guayaquil 
  and 
  Panama 
  ; 
  Cuming 
  ! 
  Orbigny. 
  

   Panama 
  ; 
  Hanley. 
  

   Panama 
  ; 
  C 
  B. 
  A. 
  ! 
  

   " 
  At 
  Lord 
  Hood's 
  I,, 
  under 
  coral 
  rocks 
  ; 
  at 
  Panama, 
  in 
  sandy 
  

   mud 
  : 
  at 
  Guayaquil 
  Bay 
  ; 
  at 
  Guacomayo, 
  under 
  stones, 
  &c., 
  by 
  

   Mr. 
  Cuming." 
  Sowerby. 
  

  

  3 
  specimens 
  were 
  found 
  alive 
  on 
  the 
  reef. 
  

  

  Family— 
  AVICULID^. 
  

  

  391. 
  ATiciila 
  mar^aritifera 
  ? 
  

  

  Under 
  the 
  name 
  of 
  A. 
  margaritifera 
  are 
  included 
  several 
  

   kindred 
  but 
  distinct 
  types. 
  It 
  would 
  be 
  of 
  great 
  service 
  to 
  the 
  

   general 
  subject 
  of 
  the 
  geographical 
  distribution 
  of 
  marine 
  

   species, 
  if 
  some 
  one 
  would 
  collect 
  authentic 
  materials, 
  and 
  

   investigate 
  the 
  peculiarities 
  of 
  the 
  local 
  types. 
  

  

  Station. 
  — 
  In 
  the 
  crevices 
  of 
  rocks 
  near 
  low 
  water 
  mark. 
  

  

  J5a^)ita^.— 
  Taboga 
  ; 
  C. 
  B. 
  A. 
  ! 
  

  

  We 
  found 
  only 
  2 
  living, 
  rather 
  young, 
  specimens. 
  Probably 
  

  

  JULY, 
  1852. 
  40 
  Akn. 
  Lyc. 
  Nat. 
  Hist. 
  

  

  