Word has been received from Santa Maria, Calif., of the death of Dorothy Perry Costa, a former resident of Oak Bluffs, on March 14. She was 85 years old and the widow of Raymond D. Costa. A son, Joseph Costa of Mountain View, Calif., and a sister, Marlene Perry of Ashville, N.C., survive her, as do her nieces, Patricia A. Costa and Virginia A. Hall of Oak Bluffs and Elaine C. Carroll of Vineyard Haven.