﻿504 
  Panama 
  Shells. 
  tellenid^. 
  

  

  striae; 
  witli 
  concentric 
  crowded 
  somewliat 
  oblique 
  minute 
  

   stride, 
  which 
  terminate 
  much 
  before 
  reaching 
  the 
  umbonial 
  

   angle, 
  covering 
  less 
  than 
  half 
  of 
  the 
  posterior 
  side, 
  and 
  which 
  

   are 
  also 
  wanting 
  near 
  the 
  anterior 
  dorsal 
  margin 
  : 
  beaks 
  not 
  

   very 
  prominent 
  : 
  ligament 
  short, 
  conspicuous 
  : 
  lateral 
  teeth 
  

   obsolete. 
  It 
  is 
  closely 
  allied 
  to 
  T. 
  similis, 
  which 
  is 
  said 
  to 
  be 
  a 
  

   Caribbean 
  species. 
  

  

  Length 
  1.75 
  inch 
  ; 
  height 
  1.23 
  inch 
  ; 
  breadth 
  .5 
  inch. 
  

  

  Station. 
  — 
  Unknown 
  . 
  

  

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

   A 
  single 
  valve 
  was 
  found. 
  

  

  460. 
  Tellina 
  Columbieiisis. 
  

  

  Synonymy. 
  

  

  Tellina 
  Cohimbiensis 
  Hanley 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  

  

  p. 
  71. 
  Apr. 
  1844. 
  

  

  Hanley 
  in 
  Sowb. 
  Thes. 
  Conch, 
  p. 
  30*7. 
  

  

  No. 
  166. 
  pi. 
  65. 
  f. 
  246. 
  - 
  - 
  - 
  1846. 
  

  

  Station. 
  — 
  Sandy 
  mud, 
  12 
  fathoms 
  ; 
  Cuming 
  ! 
  Hanley. 
  

  

  Habitat. 
  — 
  Monte 
  Christi 
  ; 
  Cuming 
  ! 
  Hanley. 
  

  

  Taboga 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   2 
  specimens 
  were 
  found. 
  

  

  461. 
  Tellina 
  concinna. 
  Nov. 
  sp. 
  

  

  Shell 
  subelliptical, 
  rather 
  thin, 
  convex, 
  with 
  the 
  anterior 
  side 
  

   a 
  little 
  larger 
  ; 
  ventral 
  margin 
  moderately 
  excurved 
  ; 
  anterior 
  

   margin 
  broadly 
  rounded; 
  anterior 
  dorsal 
  margin 
  a 
  little 
  

   excurved, 
  moderately 
  sloping 
  ; 
  posterior 
  dorsal 
  margin 
  nearly 
  

   straight, 
  sloping 
  equally 
  with 
  the 
  anterior 
  dorsal 
  margin 
  ; 
  pos- 
  

   terior 
  extremity 
  somewhat 
  obliquely 
  and 
  very 
  broadly 
  trun- 
  

   cated 
  ; 
  flexure 
  slight 
  : 
  shining, 
  snow-white, 
  with 
  a 
  slight 
  tinge 
  

   of 
  pink 
  in 
  the 
  middle 
  ; 
  with 
  very 
  unequal, 
  and, 
  for 
  the 
  most 
  

  

  