title: Hebetancylus
text: # Hebetancylus
  
  Hebetancylus is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.
  
  ## Anatomy
  
  These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch" which can serve perfectly well as a gill when they are unable to reach the surface for air.
  
  ## Species
  
  Species within the genus Hebetancylus include:
  
  * Hebetancylus excentricus (Morelet, 1851)
  * Hebetancylus moricandi (d’Orbigny, 1837)
  