Vittorio de Sica's Bicyale Thief and Roberto Rossellini's Open City, two Italian neo-realist classics, the former wearing a bit with age, the latter as powerful as when first released after World War II, at the BRATTLE THEATER. Thief at 6 and 9:30. City at Bogart is Back, again, at the HARVARD SQUARE THEATER, with Woody Allen's comic homage Play It Agaln Sam at 3:25, 6:10 and 9:40 and Michael Curtiz's Casablanca at 1:30, 4:40 and 7:55.

Two rarely-played Renoir films, his 1933 Madame Bovary and 1937, La Marseillaise, neither of which looked terribly impressive at the Renoir retrospective at the '67 New York Film Festival, at CENTRAL SQUARE CINEMA TWO. Bovary 6, 10; Marseillaise 7:50 with a weekend matinee at 3:45.

The Marx Brothers return to ORSON WELLES CINEMA TWO in Go West at 5:35 and 9, and Night AT the Opera at 4, 7:45 and 10:45. There's a midnight show of the execrable film of John Barth's End of the Road Saturday.