Ladies of Charity of the Catholic Diocese of Buffalo will have a Scholarship Mass at 11 a.m. May 18 in SS. Rita and Patrick Church, preceding a luncheon in the parish hall. The Rev. John Alderson will be celebrant at the Mass. Each year the organization awards stipends to two seminarians studying for the priesthood and gives St. Louise Incentive Awards to several high school students to help defray the cost of attending a Catholic high school in the diocese. This year's recipients will be honored at the luncheon. The luncheon fee is $13 and reservations may be made by calling the Ladies of Charity headquarters at 895-2005.