﻿TELLINA. 
  Panama 
  Shells. 
  SOS- 
  

  

  Station. 
  — 
  Unknown, 
  

  

  Hahitat. 
  — 
  Mazatlan 
  ; 
  Lt. 
  Green 
  ! 
  Gould 
  MSS. 
  

  

  Santa 
  Barbara 
  ; 
  Col. 
  Jewett 
  ! 
  Gould 
  MSS. 
  

   Panama 
  ; 
  C, 
  B. 
  A. 
  ! 
  

  

  1 
  valve 
  only 
  was 
  obtained. 
  

  

  TEIil«I]¥A. 
  — 
  The 
  number 
  of 
  species 
  in 
  this 
  genus 
  whicb 
  

   occur 
  at 
  Panama 
  is 
  extraordinary 
  : 
  it 
  will 
  be 
  seen 
  that 
  19 
  were 
  

   collected. 
  

  

  453. 
  Tellina 
  aurora 
  ? 
  

  

  Synonymy. 
  

  

  Tellina 
  aurora 
  Ilanley 
  in 
  Proc. 
  Zool. 
  Soc. 
  Lond. 
  p. 
  147. 
  Sept. 
  1844. 
  

  

  Hanley 
  in 
  SoTvb. 
  Thes. 
  Conch, 
  p. 
  302. 
  

  

  No. 
  153. 
  pi. 
  58. 
  f. 
  76. 
  - 
  - 
  - 
  - 
  1846-, 
  

  

  Station. 
  — 
  Soft 
  sandy 
  mud 
  in 
  10 
  fathoms 
  ; 
  Cuming 
  ! 
  Hanley, 
  

  

  Habitat. 
  — 
  Panama 
  ; 
  Cuming 
  I 
  Hanley. 
  

   Eio 
  Janeiro 
  ; 
  Jay. 
  

   Panama 
  ; 
  C, 
  B. 
  A. 
  ! 
  

  

  2 
  entire 
  specimens 
  were 
  found. 
  

  

  Probably 
  there 
  is 
  some 
  error 
  in 
  Dr. 
  Jay's 
  statement. 
  One 
  of 
  

   our 
  specimens 
  is 
  colorless, 
  and 
  both 
  of 
  them 
  are 
  a 
  little 
  more 
  

   acuminated 
  posteriorly 
  by 
  the 
  more 
  descending 
  slope 
  of 
  the 
  

   dorsal 
  margin 
  than 
  the 
  specimen 
  which 
  is 
  figured 
  in 
  the 
  The- 
  

   samtLs. 
  An 
  odd 
  valve 
  is 
  less 
  acuminated. 
  

  

  459. 
  Tellina 
  cog^nata. 
  Nov. 
  sp. 
  

  

  Shell 
  subelliptical, 
  solid, 
  convex, 
  subequilateral 
  ; 
  ventral 
  

   margin 
  slightly 
  excurved 
  ; 
  anterior 
  margin 
  broadly 
  rounded 
  ; 
  

   anterior 
  dorsal 
  margin 
  nearly 
  straight, 
  sloping 
  ; 
  posterior 
  dor- 
  

   sal 
  margin 
  slightly 
  concave, 
  sloping 
  equally 
  with 
  the 
  posterior 
  

   dorsal 
  ; 
  posterior 
  extremity 
  somewhat 
  obliquely 
  and 
  very 
  

   broadly 
  truncated 
  ; 
  flexure 
  slight 
  ; 
  white, 
  with 
  a 
  pale 
  reddish 
  

   or 
  brownish 
  tinge 
  ; 
  with 
  excessively 
  minute 
  unequal 
  radiating 
  

  

  