﻿430 
  Panama 
  Shells. 
  neritid.^. 
  

  

  306. 
  ]¥eritina 
  Guayaqiiilensis. 
  

  

  Synonymy. 
  

  

  Neritina 
  Guayaquilensis 
  Sowb. 
  Thes. 
  Conch, 
  p. 
  520. 
  

  

  No. 
  44.pl. 
  114. 
  f. 
  IVY. 
  - 
  - 
  1849. 
  

  

  This 
  may, 
  according 
  to 
  Eecluz, 
  be 
  identical 
  with 
  N. 
  inter- 
  

   media 
  Sowb. 
  It 
  is 
  certainly 
  identical 
  with 
  shells 
  which 
  have 
  

   been 
  distributed 
  by 
  Mr. 
  Cuming 
  and 
  by 
  Mr. 
  Petit 
  under 
  the 
  

   latter 
  name. 
  Mr. 
  Sowerby's 
  figures, 
  however, 
  seem 
  to 
  repre- 
  

   sent 
  two 
  species. 
  

  

  Station. 
  — 
  This 
  shell 
  was 
  found 
  a 
  little 
  above 
  the 
  highest 
  tides, 
  

   among 
  sticks 
  and 
  leaves, 
  in 
  a 
  muddy 
  place 
  overflowed 
  by 
  fresh 
  

   water. 
  

  

  Habitat. 
  — 
  Eeal 
  Llejos, 
  Guayaquil 
  ; 
  Cuming 
  ! 
  Sowerby. 
  

   Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

  

  Two 
  miles 
  east 
  of 
  Panama 
  we 
  collected 
  90 
  specimens 
  in 
  vari- 
  

   ous 
  stages 
  of 
  growth. 
  

  

  307. 
  T¥eritina 
  picta. 
  

  

  Synonym,y. 
  

  

  Neritina 
  picta 
  (non 
  Hsening) 
  Sowb. 
  in 
  Proc. 
  Zool. 
  Soc, 
  

  

  Lond. 
  p. 
  201. 
  - 
  . 
  - 
  - 
  Dec. 
  1832. 
  

  

  Desh. 
  in 
  Lam. 
  An. 
  sans 
  Vert. 
  VIII. 
  588. 
  

  

  No. 
  40. 
  1838. 
  

  

  Sowb. 
  Conch. 
  111. 
  No. 
  35. 
  pi. 
  86. 
  f. 
  1. 
  1841. 
  

  

  Desh. 
  in 
  Lam. 
  An. 
  sans 
  Vert. 
  III. 
  Pt. 
  2. 
  

  

  p. 
  479. 
  No. 
  40. 
  (Ed. 
  tert.) 
  - 
  - 
  - 
  1844. 
  

  

  Thes. 
  Conch, 
  p. 
  530. 
  pi. 
  116. 
  f. 
  267-9. 
  1849. 
  

  

  Station. 
  — 
  On 
  a 
  mud 
  bank 
  partially 
  overflowed 
  with 
  fresh 
  

   water 
  ; 
  Cuming 
  ! 
  Sowerby 
  ; 
  " 
  Dans 
  les 
  eaux 
  douces 
  ; 
  Cuming 
  !" 
  

   Deshayes. 
  On 
  sticks 
  and 
  stones, 
  in 
  a 
  grove 
  of 
  trees, 
  a 
  little 
  

   above 
  half 
  tide 
  level 
  : 
  also 
  in 
  dirty 
  places 
  on 
  rocks 
  at 
  or 
  a 
  

   little 
  below 
  half 
  tide 
  level. 
  According 
  to 
  our 
  observations 
  it 
  

   is 
  strictly 
  marine. 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  Cuming 
  ! 
  Sowerby. 
  

   Panama 
  ; 
  Eecluz 
  : 
  also 
  Jay. 
  

  

  