﻿(Lat, 
  vBrius, 
  va- 
  

   rious, 
  different 
  -♦- 
  

   Corbula, 
  Fein.) 
  

  

  179 
  

  

  V 
  aricorbula 
  disparilis 
  Orbigny 
  (unequal,! 
  

   different; 
  shell 
  very 
  inequivalve. 
  ) 
  

  

  3. 
  Family 
  Gastrochaenidae 
  « 
  (Gr, 
  gaster, 
  gastr-, 
  stomach 
  -*- 
  chainein, 
  

   to 
  gape. 
  Shells 
  are 
  widely 
  gaping 
  at 
  the 
  anterior 
  base.) 
  

  

  a) 
  Genus 
  Rocellaria 
  

  

  Blainville 
  1828. 
  (Neo 
  

  

  Rocellaria 
  hians 
  Gmelin 
  (gaping.) 
  Gastro 
  - 
  

   chaena 
  cuneiformis 
  Spengler 
  (wedge-sha- 
  

   ped; 
  pear-shaped) 
  ,as 
  Rocellaria 
  hians 
  u- 
  

   sed 
  to 
  be 
  known, 
  belongs 
  to 
  the 
  Indo- 
  

  

  Pacific.) 
  

  

  Latin, 
  a 
  little 
  rock.) 
  j 
  Rocellaria 
  ovata 
  Sowerby 
  (ovate, 
  egg-sha-i 
  

   Formerly 
  called 
  Ge 
  nus 
  , 
  ped.l 
  j 
  

  

  Gastrochaena 
  Sp.e 
  ngler 
  I 
  Rocellaria 
  stimpsoni 
  Tryon 
  ( 
  St 
  impson 
  ' 
  s 
  ; 
  \ 
  

   1785, 
  but 
  Gastrochae- 
  ' 
  named 
  for 
  William 
  Stimpson, 
  eminent 
  Ame-j 
  

   na 
  is 
  an 
  Indo-Pacific 
  rican 
  malacologist 
  whose 
  life 
  v/ork 
  was 
  j 
  

   genus. 
  Fem.) 
  ' 
  destroyed 
  by 
  the 
  great 
  Chicago 
  fire 
  in 
  j 
  

  

  i 
  1871; 
  1832-1872.) 
  

  

  b 
  ) 
  Genu 
  s 
  Spengleria 
  Try 
  - 
  

   on 
  186 
  1. 
  (ITamed 
  for 
  

   the 
  naturalist 
  Spen- 
  

   gler, 
  Fem, 
  ) 
  

  

  Spengleria 
  rostrata 
  Spengle 
  r 
  ( 
  ro 
  strat 
  e 
  ; 
  

   the 
  shell 
  is 
  squarish, 
  squarely 
  trunca- 
  

   ted 
  at 
  posterior 
  end.) 
  

  

  ( 
  

  

  IV. 
  SUP5RFMIILY 
  AJESIIACEA 
  

  

  Gr."a", 
  privative, 
  without 
  — 
  desmos, 
  band, 
  ligament. 
  Ligament 
  want- 
  

   ng.) 
  

  

  • 
  Fa 
  mily 
  Pholadida 
  e. 
  (Gr. 
  pholas, 
  pholad-, 
  lurking 
  in 
  a 
  hole. 
  These 
  

   mollusks 
  are 
  stone-piercers; 
  found 
  in 
  rocks, 
  coral, 
  wood.) 
  

  

  a) 
  

  

  b) 
  

  

  Genus 
  Barnea 
  Risso 
  

   1826 
  .( 
  Probably 
  one 
  

   of 
  the 
  names 
  arbitra- 
  

   ri 
  ly 
  invented 
  by 
  

   Leach. 
  May 
  have 
  been 
  

   suggested 
  by 
  the 
  pro- 
  

   per 
  name 
  Barnes. 
  Fem.) 
  

  

  Genus 
  Gyrtopleura 
  

   Tryon 
  1 
  8 
  62 
  . 
  (Gr. 
  

  

  ar- 
  

  

  Barn 
  e 
  a 
  maxitima 
  (Orbigny) 
  Pall 
  (maritime; 
  

  

  Ruth 
  D. 
  Turner 
  in 
  Johsonia 
  states 
  she 
  

  

  has 
  been 
  unable 
  to 
  find 
  a 
  description 
  

  

  of 
  this 
  species 
  by 
  d' 
  Orbigny.) 
  

   Barnea 
  t 
  rune 
  at 
  a 
  Say 
  (tinncated; 
  posterior 
  

  

  end 
  broadly 
  truncate.) 
  

  

  cyrtos, 
  

   ched 
  -'- 
  

   Fem, 
  ) 
  

  

  convex, 
  

   pleura, 
  side, 
  

  

  ! 
  Gyrtopleura 
  costata 
  Linne 
  (ribbed; 
  cover- 
  

   ! 
  ed 
  with 
  strong 
  radiating 
  ribs. 
  Formerly 
  

   I 
  listed 
  as 
  Barnea 
  costata 
  Linne. 
  Called 
  

   Angel 
  Wings. 
  ) 
  

  

  c) 
  

  

  ^SLi^ 
  2 
  i 
  rfaea 
  Gray 
  

   1842. 
  rOne 
  of 
  those 
  

   names 
  invented 
  by 
  

   Leach 
  & 
  Gray; 
  may 
  

   be 
  derived 
  from 
  

   sirpea, 
  a 
  basket- 
  

   work 
  of 
  rushes. 
  Fem.) 
  

  

  d 
  ) 
  Genus 
  Ph 
  olas 
  Linne 
  

   175 
  8. 
  (Gr. 
  pholas, 
  

   lurking 
  in 
  a 
  hole. 
  

   Fem. 
  ) 
  

  

  Zirfaea 
  crispata 
  Linne 
  (curled, 
  rugged; 
  

   surface 
  covered 
  with 
  coarse 
  concentric 
  

   ridges 
  which 
  become 
  lamellar 
  on 
  the 
  an- 
  

   terior 
  half; 
  the 
  laminae 
  are 
  strongly 
  

   toothed; 
  the 
  valves 
  are 
  divided 
  by 
  a 
  

   broad 
  shannel 
  running 
  from 
  the 
  beaks 
  to 
  

  

  . 
  the 
  middle 
  of 
  the 
  base.) 
  

  

  Pholas 
  campechiensis 
  Gmelin 
  (from 
  Campe- 
  

   che 
  ; 
  type 
  locality 
  is 
  the 
  Gulf 
  of 
  Cam- 
  

   peche, 
  Mexico.) 
  

  

  