﻿POMATIOPSIS 
  LAPIDARIA 
  — 
  ABBOTT 
  

  

  59 
  

  

  most 
  cases 
  the 
  varix 
  or 
  thickening 
  just 
  behind 
  the 
  outer 
  lip 
  of 
  the 
  aper- 
  

   ture. 
  The 
  size, 
  color, 
  and 
  texture 
  of 
  the 
  shell, 
  the 
  esir]y 
  whorls, 
  and 
  

   the 
  operculum 
  are 
  very 
  much 
  the 
  same 
  in 
  appearance. 
  

  

  • 
  Pomaticpsis 
  lopidaria 
  

   OParagonimus 
  kellicotti 
  

  

  Figure 
  10. 
  — 
  Map 
  showing 
  distribution 
  of 
  the 
  snail 
  Pomatiopsis 
  lapidaria 
  (Say) 
  (solid 
  circles) 
  

   and 
  the 
  disease 
  it 
  carries, 
  Paragonimus 
  (open 
  circles; 
  from 
  Ameel, 
  1934). 
  

  

  Animal 
  (pi. 
  o, 
  figs, 
  1 
  and 
  2). 
  — 
  Animal 
  small, 
  with 
  a 
  simple 
  foot, 
  the 
  

   miderside 
  of 
  which 
  is 
  broad 
  and 
  short, 
  rounded 
  behind 
  and 
  truncate 
  in 
  

   front. 
  Anterior 
  edge 
  of 
  foot 
  with 
  a 
  narrow, 
  deep 
  mucus 
  slit 
  to 
  which 
  

   may 
  be 
  seen 
  leading 
  a 
  series 
  of 
  short 
  mucus 
  canal 
  ducts. 
  Head 
  

   relatively 
  small, 
  proboscis 
  or 
  snout 
  blunt, 
  short 
  bilobed 
  in 
  front. 
  

   Single 
  tentacle 
  on 
  each 
  side 
  of 
  the 
  head 
  simple, 
  slender, 
  swollen 
  at 
  the 
  

   outer 
  base 
  where 
  the 
  eye 
  is 
  located. 
  In 
  male 
  specimens 
  the 
  verge 
  or 
  

   penis 
  is 
  located 
  well 
  behind 
  the 
  head 
  on 
  the 
  dorsal 
  side 
  of 
  the 
  body 
  and 
  

   on 
  the 
  midline. 
  Penis 
  simple, 
  with 
  a 
  single 
  functional 
  sperm 
  duct. 
  

  

  