﻿286 
  Panama 
  Shells. 
  

  

  PURPURIDiE. 
  

  

  moderately 
  convex, 
  with 
  a 
  distinct 
  suture 
  ; 
  last 
  whorl 
  ventri- 
  

   cose, 
  with 
  a 
  narrow 
  deep 
  spiral 
  canal 
  anteriorly 
  : 
  aperture 
  

   subelliptical 
  : 
  labrum 
  subacute, 
  thickened 
  with 
  a 
  stout 
  varix, 
  

   within 
  with 
  about 
  five 
  acute 
  spiral 
  ridges 
  : 
  labium 
  well 
  

   thickened, 
  not 
  appressed 
  : 
  notch 
  deep. 
  

  

  Mean 
  divergence 
  about 
  55° 
  ; 
  length 
  ,5 
  inch 
  ; 
  breadth 
  .31 
  

   inch; 
  length 
  of 
  spire 
  .28 
  inch. 
  

  

  Var. 
  ec; 
  with 
  the 
  color 
  nearly 
  black. 
  

  

  Station. 
  — 
  Unknown. 
  

  

  Habitat.— 
  Tahoga 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   32 
  specimens 
  were 
  collected. 
  

  

  48. 
  ]\assa 
  lutcostoma. 
  

  

  Synonymy. 
  

  

  Nassa 
  luteostoma 
  Bred. 
  & 
  Sowb. 
  in 
  Zool. 
  Journ. 
  IV. 
  376. 
  1829. 
  

  

  Buccinum 
  Kiener 
  Iconog. 
  p. 
  110. 
  pi. 
  30. 
  f. 
  1. 
  

  

  Nassa 
  xanthostoma 
  Gray 
  in 
  Zool. 
  Beech. 
  Voy. 
  pi. 
  36. 
  f. 
  3. 
  

  

  {parva.) 
  ----- 
  1839. 
  

   : 
  Souleyet 
  (?) 
  Yoy. 
  Bonite. 
  Moll. 
  pi. 
  41. 
  

  

  f. 
  5-7. 
  ----- 
  1844? 
  

  

  . 
  luteostoma 
  Reeve 
  Elem. 
  Conch, 
  pi. 
  3. 
  f. 
  11. 
  1846. 
  

  

  xanthostomaMrs. 
  Gray 
  MoW.^l. 
  85a. 
  f. 
  5. 
  {soft 
  parts.) 
  1850. 
  

  

  Station. 
  — 
  On 
  sand, 
  usually 
  not 
  far 
  below 
  high 
  water 
  mark, 
  

   in 
  places 
  where 
  water 
  is 
  running 
  during 
  the 
  recess 
  

   of 
  the 
  tide 
  : 
  also 
  in 
  similar 
  places 
  not 
  far 
  above 
  

   low 
  water 
  mark. 
  

  

  Habitat. 
  — 
  Senegal 
  ; 
  Kiener 
  : 
  also 
  Jay. 
  

  

  Real 
  Llbjos, 
  and 
  Acapulco 
  ; 
  Lesson. 
  

  

  Mazatlan 
  ; 
  Melchers 
  ! 
  Menke. 
  

  

  Panama; 
  E. 
  Jewett! 
  Gould 
  Mss. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   We 
  collected 
  330 
  specimens, 
  mostly 
  near 
  the 
  sea 
  wall 
  of 
  

   Panama. 
  " 
  M. 
  Kiener 
  indique 
  le 
  Senegal 
  pour 
  patrie 
  ^ 
  cette 
  

  

  