Exactly 400 tickets for the Boston Symphony Orchestra open rehearsal series will go on sale at 1:30 p.m. Monday in Phillips Brooks House. This series, consisting of five concerts through the 1950-51 season, is open only to students; all men buying tickets must present their Bursar's Cards.

Students will pay $8 for a series ticket, Norman Shirk of the Symphony's staff announced last night. No tickets for single concerts will be sold, Shirk said, unless series tickets are left unsold. And that, he added, is unlikely.

Speaking for P.B.H., Warren J. Abbott '51 pointed out that there will be no priorities or reserved seats--all will be "rush." The rehearsals are scheduled for November 9, December 14, January 24, March 1, and April 26.

Radcliffe's allotment of 100 tickets will be distributed separately at the Annex.