It's new faces time at the Bolshoi. Speaking by phone from New York about the Bolshoi Ballet's American tour, which was about to commence (it began at New York's State Theater at Lincoln Center June 10), the company's 63-year-old artistic director and chief choreographer, Yuri Grigorovich, said, "We are bringing a whole new generation of young stars and dancers to America, so our hopes are very high."

At Wolf Trap this week -- where the Bolshoi can be seen in six performances, Tuesday through Sunday evenings -- a number of the younger performers cited by Grigorovich will be featured in principal roles. In Grigorovich's full-length "Ivan the Terrible," set to music by Prokofiev (originally composed for Sergei Eisenstein's film classic of the same title), Mark Peretokin will be seen opening night and Thursday as the scheming Prince Kurbsky, dancing opposite Aleksandr Vetrov as Ivan and Alla Mikhalchenko as Anastasia, the woman loved by both men. In Wednesday's cast, which features Yuri Vasyuchenko as Ivan and Lyudmila Semenyaka as Anastasia, the role of Kurbsky will be danced by another newcomer -- Gedeminas Taranda.

Peretokin will also appear as Albrecht Friday evening in the first of three casts for "Giselle," partnering Nina Semizorova in the title role. "Giselle" leads Saturday will be Nina Ananiashvili and Aleksei Fadeyechev; and on Sunday, Semenyaka and Yuri Posokhov.

Though the celebrated Moscow-based troupe appeared at the Kennedy Center three years ago, this will be its first visit to Wolf Trap since 1973. The current seven-city tour ends Sept. 13 in Boston.

All performances begin at 8:15 p.m. Tickets range from $16 to $50 and are available at the Filene Center Box Office and at all TicketCenter outlets, or by calling TicketCenter PhoneCharge at 432-0200 or 1-800-448-9009.