Pirena is a genus of gastropods belonging to the family Pachychilidae.
The species of this genus are found in Malesia and Africa.
Species:
Pirena bicarinata (Grateloup, 1840)
Pirena johnsoni (E.A.Smith, 1882)
Pirena madagascariensis Lamarck, 1816
Pirena sinuosa Philippi, 1847
Pirena vazimba (Köhler & Glaubrecht, 2010)
Pirena vivipara (Köhler & Glaubrecht, 2010)
Pirena zazavavindrano (Köhler & Glaubrecht, 2010)