title: Geleiidae
text: # Geleiidae
  
  Geleiidae is a family of karyorelict ciliates. It is sometimes synonymized with family Aveliidae.
  
  Geleiidae are very large ciliates (200 µm to 5 mm), with a cylindrical shape, and a thinner, often beak-shaped, apical region. They are characterized by a ventral oral region, with buccal infraciliature organized into one intrabuccal kinety and an extrabuccal row.
  
  The family name is based on Geleia, the type genus.
  
  