A Baltimore Circuit Court judge today delayed the arraignment of Comptroller Jacqueline F. McLean on theft and misconduct charges for six weeks.

Judge Joseph P. McCurdy Jr. agreed to reschedule the date Mrs. McLean or her attorneys must enter a plea to May 2. And he arranged for the trial to begin June 8.

Both Mrs. McLean's attorney, M. Cristina Gutierrez, and Maryland Special Prosecutor Stephen Montanarelli refused to say why they had agreed to the delay.

Mrs. McLean, 50, the third highest official in city government, did not attend today's scheduled arraignment at the Clarence B. Mitchell Courthouse in downtown Baltimore.

The comptroller, who has been on an unpaid leave of absence since December, was indicted Feb. 25 by a grand jury on four counts of misconduct in office and one count of felony theft.