title: Vexillum exostium
text: # Vexillum exostium
  
  Vexillum exostium is a species of small sea snail, marine gastropod mollusk in the family Costellariidae, the ribbed miters.
  
  ## Description
  
  The length of the shell attains 24.8 mm.
  
  ## Distribution
  
  This marine species was found off the Dampier Archipelago, Western Australia.
  
  