﻿66 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  os 
  

  

  sliown 
  by 
  related 
  forms 
  is 
  not 
  necessarily 
  proportional 
  to 
  the 
  extent 
  

   of 
  chromosome 
  reconstruction, 
  so 
  that 
  a 
  true 
  picture 
  cannot 
  be 
  ob- 
  

   tained 
  from 
  anatomical 
  observations 
  alone. 
  

  

  CATALOG 
  OF 
  AMERICAN 
  POMATIOPSIS 
  

  

  Pomatiopsis 
  hinneyi 
  Tbyon, 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  1863, 
  p. 
  148, 
  pi. 
  

   1, 
  fig. 
  10 
  (Bolinas, 
  Calif.). 
  

  

  Pomatiopsis 
  calif 
  ormca 
  Pilsbry, 
  Nautilus, 
  vol. 
  12, 
  No. 
  11, 
  p. 
  126, 
  1899 
  (San 
  Fran- 
  

   cisco 
  and 
  Oakland, 
  Calif.). 
  

  

  Pomatiopsis 
  chacci 
  Pilsbry, 
  Nautilus, 
  vol. 
  50, 
  No. 
  3, 
  p. 
  84, 
  1937 
  (from 
  a 
  swampy 
  

   place 
  6 
  miles 
  up 
  the 
  highway 
  from 
  Klamath, 
  Humboldt 
  County, 
  Calif.). 
  

  

  Pomatiopsis 
  cincinnatiensis 
  (Lea), 
  Proc. 
  Amer. 
  Philos. 
  Soc, 
  vol. 
  1, 
  p. 
  289, 
  1840 
  

   (vicinity 
  of 
  Cincinnati, 
  Ohio). 
  (Ci/clostoma.) 
  

  

  Pomatiopsis 
  hinkJeiii 
  Pilsbry, 
  Nautilus, 
  vol. 
  10, 
  No. 
  4, 
  p. 
  37, 
  1896 
  (Black 
  Falls, 
  

   above 
  Florence, 
  Ala.). 
  

  

  Pomatiopsis 
  lupidaria 
  (Say), 
  Journ. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  vol. 
  1, 
  p. 
  13, 
  

   1817 
  (no 
  locality). 
  iCyclostoma.) 
  

  

  Pomatiopsis 
  praelonr/a 
  Brooks 
  and 
  MacMillan, 
  Nautilus, 
  vol. 
  53, 
  No. 
  3, 
  p. 
  96, 
  

   1940 
  (hillside 
  along 
  Elk 
  River, 
  1.5 
  miles 
  south 
  of 
  Clay, 
  Clay 
  County, 
  W. 
  Va.). 
  

  

  Pomatiopsis 
  robusta 
  Walker, 
  Nautilus, 
  vol. 
  22, 
  No. 
  9, 
  p. 
  97, 
  1908 
  (Jackson 
  Lake, 
  

   Wyo.). 
  

  

  Pomatiopsis 
  saynna 
  (Anthony), 
  in 
  S. 
  S. 
  Haldeman's 
  "A 
  Monograph 
  of 
  the 
  Fresh- 
  

   water 
  Univalve 
  Mollusca 
  of 
  the 
  United 
  States" 
  (no 
  locality 
  printed 
  [Cin- 
  

   cinnati, 
  Ohio]). 
  {AmnieoJa.) 
  

  

  Pomatiopsis 
  scalaris 
  F. 
  C. 
  Baker, 
  Nautilus, 
  vol. 
  40, 
  No. 
  4, 
  p. 
  120, 
  1927 
  (New 
  Har- 
  

   mony, 
  Posey 
  County, 
  Ind., 
  in 
  Peorian 
  loess) 
  . 
  Pleistocene. 
  

  

  