Former Brooklyn Justice Gerald P. Garson failed to disclose that he had received a $1,000 referral fee in a divorce case he was presiding over, prosecutors disclosed Monday in a letter to Justice Jeffrey G. Berry, who will preside at Garson’s trial on a 10-count indictment.

The episode about the referral fee is one of three prior uncharged bad acts that the prosecutors are asking Justice Berry to let them use in their case-in-chief to support their claim that Garson corruptly performed his duties as a judge in return for accepting referral fees, free meals and drinks, and, in one instance, a box of Dominican cigars.