﻿AND 
  OTHER 
  FAMILIES. 
  103 
  

  

  Unio 
  Griffithianus. 
  Plate 
  XV. 
  fig. 
  46. 
  

  

  Testa 
  elliptica, 
  expansd, 
  transversa, 
  inxquilaterali, 
  lateribus 
  subplamdatis 
  ; 
  

   clivo 
  umboniali 
  rotundato 
  ; 
  valvulis 
  subcrassis 
  ; 
  natibus 
  parvis 
  ; 
  epidermide 
  luteold 
  

   viridi-radiata 
  ; 
  dente 
  cardinali 
  parvo 
  et 
  lobis 
  instructo 
  ; 
  later 
  -all 
  longo,curvo 
  et 
  ad 
  

   terminum 
  posteriorem 
  aacto; 
  margaritd 
  purpurea, 
  alba, 
  vel 
  salmonis 
  colore 
  tincta. 
  

  

  Shell 
  elliptical, 
  spread 
  out, 
  transverse, 
  inequilateral, 
  somewhat 
  flattened 
  on 
  the 
  sides 
  ; 
  

   umbonial 
  slope 
  rounded 
  ; 
  valves 
  somewhat 
  thick 
  ; 
  beaks 
  small 
  ; 
  epidermis 
  yellowish, 
  

   with 
  green 
  rays 
  ; 
  cardinal 
  teeth 
  small, 
  lobed 
  ; 
  lateral 
  teeth 
  long, 
  curved 
  and 
  enlarged 
  at 
  

   posterior 
  end 
  ; 
  nacre 
  purple, 
  salmon 
  or 
  white. 
  

  

  Hab. 
  South 
  Carolina. 
  Professor 
  Ravenel. 
  

  

  My 
  Cabinet. 
  

  

  Cabinet 
  of 
  Professor 
  Ravenel, 
  Charleston, 
  South 
  Carolina. 
  

  

  Diam. 
  -6, 
  Length 
  1-2, 
  Breadth 
  2*2 
  inches. 
  

  

  Shell 
  elliptical, 
  spread 
  out, 
  transverse, 
  inequilateral 
  ; 
  somewhat 
  flat- 
  

   tened 
  on 
  the 
  sides, 
  rounded 
  on 
  the 
  umbonial 
  slope 
  ; 
  substance 
  of 
  the 
  

   shell 
  somewhat 
  thick 
  ; 
  beaks 
  small, 
  scarcely 
  elevated 
  ; 
  ligament 
  some- 
  

   what 
  long 
  and 
  narrow 
  ; 
  epidermis 
  yellowish, 
  with 
  green 
  diverging 
  rays 
  ; 
  

   cardinal 
  teeth 
  small, 
  lobed, 
  disposed 
  to 
  be 
  double 
  in 
  both 
  valves 
  ; 
  lateral 
  

   teeth 
  long, 
  curved 
  and 
  enlarged 
  at 
  the 
  posterior 
  end 
  ; 
  anterior 
  cicatrices 
  

   distinct; 
  posterior 
  cicatrices 
  confluent; 
  dorsal 
  cicatrices 
  situated 
  across 
  

   the 
  cavity 
  of 
  the 
  beaks 
  ; 
  cavity 
  of 
  the 
  beaks 
  rather 
  shallow 
  ; 
  cavity 
  of 
  

   the 
  shell 
  shallow 
  ; 
  nacre 
  purple, 
  salmon 
  or 
  white. 
  

  

  Remarks. 
  — 
  Although 
  this 
  shell 
  is 
  very 
  like 
  the 
  complanatas 
  (Soland.), 
  

   I 
  have 
  thought 
  it 
  sufficiently 
  distinct 
  to 
  separate 
  it. 
  It 
  is 
  more 
  rounded 
  

   before, 
  and 
  more 
  spread 
  out, 
  forming 
  a 
  more 
  perfect 
  ellipsis. 
  In 
  the 
  

   nacre 
  it 
  is 
  very 
  much 
  the 
  same. 
  I 
  name 
  it 
  after 
  my 
  friend 
  R. 
  E. 
  

   Griffith, 
  M.D. 
  

  

  Unio 
  confertus. 
  Plate 
  XVI. 
  fig. 
  47. 
  

  

  Testa 
  trapezoided, 
  transversd, 
  insequilaterali, 
  in 
  flat 
  a; 
  valvulis 
  subcrassis; 
  nati- 
  

   bus 
  prominulis 
  et 
  transversim 
  rugatis 
  ; 
  dentibus 
  cardinalibus 
  compressis, 
  et 
  in 
  

  

  