Le roi d'Ys (The King of Ys) (1875-88, full score n.d.), (opera in 3 acts, E. Blau), f.p.
La jacquerie (The Jacquerie Revolt) (1891-92) (opera in 4 acts, Blau & S. Arnault) (Act I finished by Lalo, completed posthumously by Arthur Coquard), f.p.