Abstract
On the occurence of two rare Volvocales (Volvulina steinii Playfair and Astrephomene gubernaculifera Pocock) in the Lake of Barrea (Parco Nazionale d'Abruzzo, Italy).—Two rare Volvocales (Volvulina steinii Playfair and Astrephomene gubernaculifera Pocock) are reported for Lake of Barrea (Parco Nazionale d'Abruzzo). Both are new records for Italy. Astrephomene gubernaculifera moreover seems to be a new record for Europe.