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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                              (AMENDMENT NO. 17)1

                              Jefferies Group, Inc.
             -------------------------------------------------------
                                (Name of Issuer)

                         Common Stock, par value $0.0001
             -------------------------------------------------------
                         (Title of Class of Securities)

                                    472319102
             -------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2004
             -------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

|X|   Rule 13d-1(b)
|_|   Rule 13d-1(c)
|_|   Rule 13d-1(d)

----------
      1 The  remainder  of this cover  page shall be filled out for a  reporting
person's  initial  filing on this  form with  respect  to the  subject  class of
securities,  and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

      The information  required in the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).


                                  Page 1 of 7


-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 2 of 7 Pages
-------------------                                            -----------------

--------------------------------------------------------------------------------
1.    Names of Reporting Persons.
      I.R.S. Identification Nos. of above persons (entities only)

      Jefferies Group, Inc. Employee Stock Ownership Plan (the "ESOP"), Plan
      Administrator of the ESOP (the "Administrator"), and the ESOP Trust.
--------------------------------------------------------------------------------
2.    Check the Appropriate Box if a Member of a Group (See Instructions)

                                                                         (a) |_|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3.
              SEC Use Only

--------------------------------------------------------------------------------
4.    Citizenship or Place of Organization

      The ESOP is a defined  contribution plan qualified under Section 401(a) of
      the Internal  Revenue Code of 1986,  as amended.  The ESOP Trust holds the
      assets of the ESOP.  The assets of the ESOP Trust have a situs in, and the
      ESOP  and  the  ESOP  Trust  are  construed,  enforced,  and  administered
      according to the laws of the State of California.
--------------------------------------------------------------------------------
 Number of Shares                         5.    Sole Voting Power
   Beneficially
  Owned by Each                                 3,831 shares of common stock at
 Reporting Person                               December 31, 2004
       With                               --------------------------------------
                                          6.    Shared Voting Power

                                                0 shares of common stock at
                                                December 31, 2004
                                          --------------------------------------
                                          7.    Sole Dispositive Power

                                                3,831 shares of common stock at
                                                December 31, 2004
                                          --------------------------------------
                                          8.    Shared Dispositive Power

                                                6,362,176 shares of common stock
                                                at December 31, 2004
--------------------------------------------------------------------------------

9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      6,366,007 shares of common stock at December 31, 2004

10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
      Instructions)
                                                                             |_|
--------------------------------------------------------------------------------

11.   Percent of Class Represented by Amount in Row (9)

      11.1%
--------------------------------------------------------------------------------
12.   Type of Reporting Person (See Instructions)

      EP
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 3 of 7 Pages
-------------------                                            -----------------

Item 1.

      (a)   Name of Issuer:

            Jefferies Group, Inc.

      (b)   Address of Issuer's Principal Executive Offices:

            520 Madison Avenue, 12th Floor, New York, New York 10022

ITEM 2.

      (a)   Name of Person Filing:

            Jefferies  Group,  Inc.  Employee Stock Ownership Plan (the "ESOP");
            Plan Administrator of the ESOP (the  "Administrator");  and The ESOP
            Trust.

      (b)   Address of Principal Business Office or, if none, Residence:

            Jefferies & Company, Inc.
            c/o Melvin W. Locke, Jr.
            11100 Santa Monica Blvd., 12th Floor, Los Angeles, California 90025

      (c)   Citizenship:

            The ESOP is a defined  contribution  plan  qualified  under  Section
            401(a) of the Internal  Revenue Code of 1986,  as amended.  The ESOP
            Trust  holds the  assets of the ESOP.  The  assets of the ESOP Trust
            have a situs  in,  and the ESOP and the ESOP  Trust  are  construed,
            enforced,  and  administered  according  to the laws of the State of
            California.

      (d)   Title of Class of Securities:

            Common Stock, par value $.0001

      (e)   CUSIP Number:

            472319102

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO SECTIONS 240.13D-1(B) OR
        240.13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A:

       (a)  |_|   Broker or dealer registered under Section 15 of the Act (15
                  U.S.C. 78o);

       (b)  |_|   Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);

       (c)  |_|   Insurance company as defined in Section 3(a)(19) of the Act
                  (15 U.S.C. 78c);

       (d)  |_|   Investment company registered under Section 8 of the
                  Investment Company Act of 1940 (15 U.S.C. 80a-8);


-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 4 of 7 Pages
-------------------                                            -----------------

       (e)  |_|   An investment adviser in accordance with Rule
                  13d-1(b)(1)(ii)(E);

       (f)  |X|   An employee benefit plan or endowment fund in accordance with
                  Rule 13d-1(b)(1)(ii)(F);

       (g)  |_|   A parent holding company or control person in accordance with
                  Rule 13d-1(b)(ii)(G);

       (h)  |_|   A savings association as defined in Section 3(b) of the
                  Federal Deposit Insurance Act (12 U.S.C. 1813);

       (i)  |_|   A church plan that is excluded from the definition of an
                  investment company under section 3(c)(14) of the Investment
                  Company Act of 1940 (15 U.S.C. 80a-3);

       (j)  |_|   Group, in accordance with Rule13d-1(b)(1)(ii)(J).

ITEM 4. OWNERSHIP.

      The following sets forth beneficial ownership information at December 31,
      2004:

      (a)   Amount beneficially owned: 6,366,007

      (b)   Percent of class: 11.1%

      (c)   Number of shares as to which the person has:

            (i)   Sole power to vote or to direct the vote: 3,831

            (ii)  Shared power to vote or direct the vote: 0

            (iii) Sole power to dispose or direct the disposition of: 3,831

            (iv)  Shared power to dispose or direct the disposition of:
                  6,362,176

      At December  31,  2004,  a total of  6,366,007  shares of common  stock of
Jefferies  Group,  Inc. (the  "Company")  were held in the ESOP Trust,  of which
6,362,176 shares were allocated to the accounts of participants.

      The Plan  Administrator is a committee of at least three members appointed
by the Board of Directors of the Company. All acts of the Plan Administrator are
by a majority of the committee members.  The Plan Administrator is the principal
fiduciary  with  respect to the  operation  and  maintenance  of the ESOP,  with
authority to determine the timing of the purchase of shares of common stock.

      Any  securities  purchased by the ESOP are  purchased by Wells Fargo Bank,
the  trustee of the ESOP Trust (the "ESOP  Trustee"),  as  directed  by the Plan
Administrator.  The Plan  Administrator,  the ESOP, the ESOP Trust, and the ESOP
Trustee may be deemed to have  shared  dispositive  power over the common  stock
held in the ESOP Trust.



-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 5 of 7 Pages
-------------------                                            -----------------

      The terms of the ESOP provide for the voting  rights  associated  with the
common  stock  held  by the  ESOP  Trust  to be  passed  through  and  exercised
exclusively by the  participants  in the ESOP to the extent that such securities
are allocated to ESOP participants' accounts. Any shares held in the unallocated
account maintained by the ESOP Trustee prior to their allocation to the accounts
of ESOP  participants are voted by the ESOP Trustee at the direction of the Plan
Administrator. As of December 31, 2004, 6,362,176 shares of common stock held in
the ESOP Trust were  allocated to the accounts of ESOP  participants,  and 3,831
shares of  common  stock  held in the ESOP  Trust  were  held in an  unallocated
account for future use.

      The current  members of the committee  acting as Plan  Administrator  are:
Richard B. Handler,  Chief Executive Officer and a Director of the Company; John
C. Shaw, Jr., President,  Chief Operating Officer and a Director of the Company;
Joseph A. Schenk,  Executive Vice President and Chief  Financial  Officer of the
Company;  and Melvin W. Locke,  Jr.,  Director of People Services of Jefferies &
Company,  Inc. (a wholly  owned  subsidiary  of the  Company).  Pursuant to Rule
13d-4, each such member disclaims beneficial ownership of shares of common stock
that may be deemed to be beneficially owned by the ESOP Trust,  except that each
such member does not disclaim  beneficial  ownership of those shares in which he
has beneficial ownership as a participant in the ESOP.

      At December 31, 2004, Mr. Handler  beneficially  owned,  in his individual
capacity,  4,499,176 shares of common stock, representing  approximately 7.5% of
the  outstanding  class of  common  stock at that  date.  The  number  of shares
beneficially owned by Mr. Handler includes approximately 52,988 shares allocated
to his account  under the ESOP (as to which  shares he has sole voting power and
no dispositive power).  Except as otherwise indicated in the preceding sentence,
and except for 20 shares  held in an account  for the  benefit of Mr.  Handler's
child (as to which  shares he has shared  voting  and  dispositive  power),  Mr.
Handler has sole voting and sole dispositive power over the shares  beneficially
owned by him at December 31, 2004.

      At December 31,  2004,  Mr. Shaw  beneficially  owned,  in his  individual
capacity,  1,388,033 shares of common stock, representing  approximately 2.4% of
the  outstanding  class of  common  stock at that  date.  The  number  of shares
beneficially owned by Mr. Shaw includes  approximately  134,514 shares allocated
to his account  under the ESOP (as to which  shares he has sole voting power and
no dispositive power).  Except as otherwise indicated in the preceding sentence,
Mr. Shaw has sole voting and sole dispositive power over the shares beneficially
owned by him at December 31, 2004.

      At December 31, 2004,  Mr. Schenk  beneficially  owned,  in his individual
capacity, 229,456 shares of common stock, representing approximately 0.4% of the
outstanding   class  of  common  stock  at  that  date.  The  number  of  shares
beneficially owned by Mr. Schenk includes  approximately  1,568 shares allocated
to his account  under the ESOP (as to which  shares he has sole voting power and
no dispositive power).  Except as otherwise indicated in the preceding sentence,
and except  for 60 shares  held in  accounts  for the  benefit  of Mr.  Schenk's
children (as to which shares he has shared voting and  dispositive  power),  Mr.
Schenk has sole voting and sole dispositive  power over the shares  beneficially
owned by him at December 31, 2004.

      At December 31, 2004,  Mr. Locke  beneficially  owned,  in his  individual
capacity, 102,779 shares of common stock, representing approximately 0.2% of the
outstanding   class  of  common  stock  at  that  date.  The  number  of  shares
beneficially owned by Mr. Locke includes  approximately  57,638 shares allocated
to his account  under the ESOP (as to which  shares he has sole voting power and
no dispositive power).  Except as otherwise indicated in the preceding sentence,
Mr.  Locke  has  sole  voting  and  sole  dispositive   power  over  the  shares
beneficially owned by him at December 31, 2004.


-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 6 of 7 Pages
-------------------                                            -----------------

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

      Not Applicable.

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

      Under the  instruments  governing  the ESOP and the ESOP  Trust,  the ESOP
Trustee is empowered to receive or direct the receipt of dividends from, and the
proceeds  from the sale of, all shares held in the ESOP Trust for the  exclusive
benefit of the participants in the ESOP.

ITEM 7.  IDENTIFICATION  AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
         SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL 
         PERSON.

      Not Applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF A GROUP.

      Not Applicable.

ITEM 9. NOTICE OF DISSOLUTION OF A GROUP.

      Not Applicable.

ITEM 10. CERTIFICATION.

      By signing  below I certify that to the best of my  knowledge  and belief,
      the  securities  referred  to  above  were  acquired  and are  held in the
      ordinary course of business and were not acquired and are not held for the
      purpose of or with the effect of  changing or  influencing  the control of
      the issuer of the  securities  and were not  acquired  and are not held in
      connection with or as a participant in any transaction having that purpose
      or effect.


-------------------                                            -----------------
CUSIP No. 472319102                    13G                     Page 7 of 7 Pages
-------------------                                            -----------------
                                    SIGNATURE

After  reasonable  inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Date :  February 4, 2005

      Plan Administrator, Jefferies Group, Inc. Employee Stock Ownership Plan

      Jefferies Group, Inc. Employee Stock Ownership Plan

      Jefferies Group, Inc. Employee Stock Ownership Plan Trust

            By: Plan Administrator, Jefferies Group, Inc. Employee Stock
                Ownership Plan

                By: /s/ Melvin W. Locke, Jr.
                ---------------------------------
                       Melvin W. Locke, Jr.