title: Collonia admissa
text: # Collonia admissa
  
  Collonia admissa is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
  
  ## Description
  
  The shell grows to a height of 2.5 mm.
  
  ## Distribution
  
  This species occurs in the Atlantic Ocean off St Helena.
  
  