On and after April 1, 1957, any member may nominate, on a form prescribed by the Comptroller, in addition to the named primary beneficiary, one named contingent beneficiary to whom the benefits provided by sections 51 and 60 of the Retirement and Social Security Law will be paid in the event the primary beneficiary does not survive the member.
N.Y. Comp. Codes R. & Regs. Tit. 2 § 305.1