Bank of America Corp has reached a $335 million settlement of a federal lawsuit accusing it of misleading shareholders about its exposure to risky mortgage securities and its dependence on an electronic mortgage registry known as MERS. The second-largest U.S. bank disclosed the accord in its quarterly report filed on Friday with the U.S. Securities and Exchange Commission. It said it set aside enough reserves for the settlement as of June 30, and that final documentation and court approval are still needed.