If a member elected to participate in the benefits provided for by this article more than 30 days after this article became operative in the county, a survivor’s allowance shall not be due to either his eligible spouse or child, and a lump sum supplemental survivorship benefit shall not be due, unless additional deductions were made pursuant to this article from the salary or wages of such member for not less than 18 months.

(Added by Stats. 1961, Ch. 1591.)