Exhibit 1.A.(8)(b)(xxvi)

                    ADDENDUM TO FUND PARTICIPATION AGREEMENT


         This ADDENDUM dated as of May 1, 2000 amends the Fund Participation
Agreement among Security Life of Denver Insurance Company ("Company"), Neuberger
Berman Advisers Management Trust ("Trust"), Advisers Managers Trust ("Managers
Trust"), and Neuberger Berman Management Inc. ("NBMI").

         WHEREAS, the Company, Trust, Managers Trust, and NBMI are parties to a
Fund Participation Agreement ("Agreement") pursuant to which separate accounts
of the Company invest proceeds from variable annuity and/or variable life
insurance policies in the one or more portfolios of the Trust ("Portfolios");
and

         WHEREAS, the Trust, through the Portfolios, currently invests all of
its net investable assets in corresponding series of Managers Trust in a
"master-feeder" structure; and

         WHEREAS, the Boards of Trustees of the Trust and Managers Trust have
approved a transaction to eliminate the current master-feeder structure in which
Trust will receive the portfolio securities held by Managers Trust in redemption
of the interests of Managers Trust held by the Trust (this transaction is
referred to as the "In-Kind Redemption"); and

         WHEREAS, the In-Kind Redemption is currently scheduled to be effected
on or about May 1, 2000 (the date on which the In-Kind Redemption is effected is
referred to as the "Effective Date"); and

         WHEREAS, upon completion of the In-Kind Redemption, the Trust will hold
and invest directly in its own portfolio of securities and Managers Trust will
cease investment operations and be dissolved; and

         WHEREAS, the parties wish to amend the Agreement to reflect the In-Kind
Redemption and the elimination of the master-feeder structure.

         NOW THEREFORE, effective on the Effective Date, the Trust assumes all
of the rights, obligations, and liabilities of Managers Trust under the
Agreement.

         The undersigned hereby consents to the assignment described in the
preceding paragraph.


SECURITY LIFE OF DENVER INSURANCE COMPANY      ADVISERS MANAGEMENT TRUST

By:  /s/ James L. Livingston, Jr.              By:  /s/ Michael Weiner
     ------------------------------------           ----------------------------
Name:   James L. Livingston, Jr.               Name:   Michael Weiner
Title:  Executive Vice President               Title:  Vice President







NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST     NEUBERGER BERMAN MANAGEMENT INC

By: /s/ Michael Weiner                         By: /s/ Michael Weiner
    --------------------------------------         -----------------------------
Name:   Michael Weiner                         Name:  Michael Weiner
Title:  Vice President                         Title: Senior Vice President



















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