﻿g) 
  Genus 
  Montacuta 
  Tur 
  - 
  

   ton 
  1822 
  . 
  (Dedicated 
  

   to 
  G. 
  Montagu, 
  an 
  

   English 
  malacologist 
  

   who 
  died 
  in 
  1815, 
  

   Fern, 
  ) 
  

  

  h) 
  Genus 
  Alig 
  e 
  na 
  H.C 
  . 
  

   Lea 
  18 
  45. 
  ^From 
  

   aligenes, 
  sea-"born; 
  

   epithet 
  of 
  Venus. 
  

   Fem. 
  ) 
  

  

  i 
  ) 
  Genus 
  EntovalTO, 
  

  

  Vo 
  eltskow 
  1890. 
  ( 
  Gr 
  . 
  

   entos, 
  inside, 
  with- 
  

   in 
  -I- 
  valva, 
  valve, 
  

   Pem. 
  ) 
  

  

  165 
  

   J 
  M^^sella 
  striatula 
  Verrill 
  & 
  Bush 
  (surface 
  

   j 
  covered 
  with 
  fine 
  concentric 
  miscrosco- 
  

  

  pic 
  striae.) 
  

   Mysella 
  triqu 
  e 
  tra 
  Verrill 
  & 
  Bush 
  ( 
  thre 
  e- 
  

   j 
  cornered, 
  triangular; 
  shell 
  somewhat 
  

   j 
  triangular.) 
  

  

  i 
  Hysella 
  tumidula 
  verrilli 
  Pall 
  (Somewhat 
  

   I 
  swollen, 
  inflated; 
  named 
  for 
  Addison 
  E. 
  

   I 
  Verrill, 
  Professor 
  of 
  Zoology, 
  Yale 
  Uni- 
  

   j 
  versity, 
  1839-1927.) 
  

  

  ^ 
  Ijlysella 
  cuneata 
  Verrill 
  & 
  Bush 
  ( 
  wedge 
  - 
  

   i. 
  shaped, 
  ) 
  

  

  [ 
  Montacuta 
  dawsoni 
  Jeffreys 
  (Dawson's; 
  prof 
  

  

  I 
  bahly 
  Sir 
  John 
  William 
  Dawson, 
  1820-1899. 
  

  

  i 
  Montacuta 
  limpida 
  Pall 
  (transparent.) 
  

   Montacuta 
  minuscula 
  Dall 
  ( 
  r 
  at 
  he 
  r 
  sma 
  11.) 
  

   Montacuta 
  percompressa 
  Dall 
  (much 
  compreaf 
  

  

  I 
  sed, 
  flattened.) 
  

  

  I 
  Mont 
  a 
  cuta 
  floridana 
  Dall 
  (Florida; 
  found 
  

  

  L 
  on 
  the 
  West 
  Coast 
  of 
  Florida.) 
  

  

  Aligena 
  elevata 
  Stimpson 
  ( 
  elevated; 
  

   "beaks 
  acute, 
  swelled. 
  ) 
  

  

  I 
  Entovalva 
  perri 
  e 
  ri 
  Malard 
  1905, 
  Clench 
  & 
  

   ' 
  Aguayo 
  1951 
  . 
  (Named 
  for 
  Edmond 
  Perrier.) 
  

   ■ 
  Entovalva 
  symmetros 
  Jeffreys 
  ( 
  symme 
  t 
  r 
  i 
  ca 
  1 
  

  

  VI. 
  SUPERFAMILY 
  CARDIAGE 
  A 
  

   ( 
  Gr, 
  cardia, 
  heart; 
  heart-shaped.) 
  

  

  Family 
  Gardiidae 
  , 
  (Gr, 
  cardia, 
  heart; 
  heart-shaped. 
  Cockle 
  Shells.) 
  

  

  a 
  ) 
  Genus 
  Trachycardium 
  

   Morch 
  1855 
  , 
  (Gr. 
  

   trachys, 
  rough, 
  i^ug- 
  

   ged 
  -f- 
  cardia, 
  heart. 
  

   Neuter. 
  ) 
  

  

  Trachycardiiim 
  isocardia 
  Linne 
  (Gr, 
  isos, 
  

   equal 
  — 
  cardia, 
  heart; 
  valves 
  equal,) 
  

  

  Trachycardium 
  egmontianum 
  Shuttleworth 
  

   (from 
  Egmont 
  Key, 
  Florida, 
  ) 
  

  

  Trachycardium 
  magnum 
  Linne 
  (large, 
  big; 
  

   shell 
  ranging 
  from 
  55 
  to 
  90 
  mm, 
  in 
  

  

  I 
  height; 
  67 
  mm, 
  in 
  length.) 
  

  

  Trachycardium 
  muricatum 
  Linne 
  (armed 
  with 
  

  

  '_ 
  sharp 
  points, 
  Rihs 
  have 
  sharp 
  scales.) 
  

  

  Papyri 
  dea 
  soleniformis 
  E 
  r 
  uguiere 
  ( 
  shaped 
  

   like 
  a 
  Solen.) 
  Called 
  Papyridea 
  hiatus 
  

   Meuschen 
  in 
  Johnsonia 
  (this 
  name, 
  accord- 
  

   b) 
  Genus 
  Papyridea 
  Swain- 
  ] 
  ing 
  to 
  Dr. 
  Abbott, 
  is 
  not 
  valid; 
  hiatus, 
  

  

  a 
  Lat, 
  noun 
  meaning 
  a 
  gap; 
  shell 
  is 
  ga 
  

  

  son 
  1840 
  . 
  (Lat 
  , 
  papy- 
  

   rus, 
  paper; 
  paper- 
  

   like, 
  Fem, 
  ) 
  

  

  ping 
  at 
  both 
  ends. 
  Common 
  name: 
  Gaping 
  

   Papyridea.) 
  Forc-merly 
  called 
  Papyridea 
  

   spinosa 
  Meuschen 
  , 
  ( 
  spiny, 
  because 
  ribs 
  

   are 
  spiny.) 
  

  

  