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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: June 30, 2005

Check here if Amendment [ X ]; Amendment Number: 1
This Amendment (Check only one.): [ x ] is a restatement.
                                  [   ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Jefferies Group Inc.
Address: 11100 Santa Monica Blvd, 11th Flr.
         Los Angeles, CA  90025

13F File Number:  28-10917

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Alfred Petrillo
Title:     Senior Vice President
Phone:     212-336-7140

Signature, Place, and Date of Signing:

     /s/  Alfred Petrillo     Jersey City, NJ     December 8, 2005

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         2

Form13F Information Table Entry Total:     187

Form13F Information Table Value Total:     $885,243 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

No.  13F File Number               Name

01   28-10432                      Jefferies & Company, Inc.
02   28-11239                      Jefferies Asset Management, LLC



                                          
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ABERCROMBIE & FITCH CO         CL A             002896207    14667   213530 SH       SOLE    01 02          213530        0        0
ACADIA RLTY TR                 COM SH BEN INT   004239109      360    19500 SH       SOLE    01              19500        0        0
ADVANCED MICRO DEVICES INC     DBCV  4.750% 2/0 007903AE7      997  1000000 PRN      SOLE    01            1000000        0        0
AEROPOSTALE                    COM              007865108     4039   120200 SH       SOLE    02             120200        0        0
ALLERGAN INC                   NOTE        11/0 018490AE2     1487  1500000 PRN      SOLE    01            1500000        0        0
AMEDISYS INC                   COM              023436108      343    10960 SH       SOLE    01              10960        0        0
AMERICA SVC GROUP INC          COM              02364L109      380    24005 SH       SOLE    01 02           24005        0        0
AMERICAN DENTAL PARTNERS       COM              025353103      278    11378 SH       SOLE    02              11378        0        0
AMERICAN EAGLE OUTFITTERS NE   COM              02553E106     5604   182948 SH       SOLE    01 02          182948        0        0
AMERICAN EXPRESS CO            COM              025816109     2931    54936 SH       SOLE    01              54936        0        0
AMERICAN EXPRESS CO            DBCV  1.850%12/0 025816AS8       47    46000 PRN      SOLE    01              46000        0        0
AMERICAN TOWER CORP            NOTE  3.250% 8/0 029912AK8       24    15000 PRN      SOLE    01              15000        0        0
AMERICREDIT CORP               COM              03060R101     1642    66000 SH       SOLE    01              66000        0        0
ANNTAYLOR STORES CORP          COM              036115103      874    36000 SH       SOLE    02              36000        0        0
ARDEN RLTY INC                 COM              039793104      954    26331 SH       SOLE    01              26331        0        0
ARIES MARITIME TRNSPRT LTD     SHS              G0474B105     3443   275348 SH       SOLE    01             275348        0        0
ASHFORD HOSPITALITY TR INC     COM SHS          044103109     7987   743000 SH       SOLE    01             743000        0        0
AUTOLIV INC                    COM              052800109      328     7500 SH       SOLE    01               7500        0        0
AVALONBAY CMNTYS INC           COM              053484101     1884    23783 SH       SOLE    01              23783        0        0
BEST BUY INC                   COM              086516101      568     8302 SH       SOLE    01               8302        0        0
BHP BILLITON LTD               SPONSORED ADR    088606108      675    25000 SH       SOLE    01              25000        0        0
BISYS GROUP INC                NOTE  4.000% 3/1 055472AB0       29    30000 PRN      SOLE    01              30000        0        0
BLOCKBUSTER INC                CL A             093679108    12297  1348400 SH       SOLE    02            1348400        0        0
BOSTON PROPERTIES INC          COM              101121101     1324    19204 SH       SOLE    01              19204        0        0
BRISTOL MYERS SQUIBB CO        COM              110122108      308    12000 SH       SOLE    01              12000        0        0
BROWN FORMAN CORP              CL B             115637209      955    16000 SH       SOLE    01              16000        0        0
CACHE INC                      COM NEW          127150308     7681   462162 SH       SOLE    02             462162        0        0
CALPINE CORP                   COM              131347106      257    86001 SH       SOLE    01              86001        0        0
CAMDEN PPTY TR                 SH BEN INT       133131102      519     9543 SH       SOLE    01               9543        0        0
CAPITAL LEASE FDG INC          COM              140288101     4760   429600 SH       SOLE    01             429600        0        0
CAPSTEAD MTG CORP              COM NO PAR       14067E506     1283   152000 SH       SOLE    01             152000        0        0
CARNIVAL CORP                  DBCV  2.000% 4/1 143658AN2      683   490000 PRN      SOLE    01             490000        0        0
CENTURY ALUM CO                NOTE  1.750% 8/0 156431AE8      196   210000 PRN      SOLE    01             210000        0        0
CHEMED CORP NEW                COM              16359R103      245     6000 SH       SOLE    02               6000        0        0
CHEVRON CORP NEW               COM              166764100      383     6504 SH       SOLE    01               6504        0        0
CONSOL ENERGY INC              COM              20854P109     5263   110000 SH       SOLE    01             110000        0        0
CORNELL COMPANIES INC          COM              219141108      148    11000 SH       SOLE    02              11000        0        0
CORPORATE OFFICE PPTYS TR      SH BEN INT       22002T108     3776   130100 SH       SOLE    01             130100        0        0
CRT PROPERTIES INC             COM              22876P109      309    11116 SH       SOLE    01              11116        0        0
DICKS SPORTING GOODS INC       COM              253393102     1582    41000 SH       SOLE    02              41000        0        0
DOLLAR GEN CORP                COM              256669102      204    10000 SH       SOLE    02              10000        0        0
DOMINION RES INC VA NEW        NOTE  2.125%12/1 25746UAT6       33    32000 PRN      SOLE    01              32000        0        0
DOW CHEM CO                    COM              260543103     1121    25001 SH       SOLE    01              25001        0        0
DRESS BARN INC                 COM              261570105     5048   223069 SH       SOLE    02             223069        0        0
DUKE ENERGY CORP               NOTE  1.750% 5/1 264399EJ1     1970  1705000 PRN      SOLE    01            1705000        0        0
EASTMAN KODAK CO               NOTE  3.375%10/1 277461BE8       51    48000 PRN      SOLE    01              48000        0        0
EDISON INTL                    COM              281020107      428    10600 SH       SOLE    01              10600        0        0
EDO CORP                       NOTE  5.250% 4/1 281347AD6     1173  1150000 PRN      SOLE    01            1150000        0        0
ELECTRIC CITY CORP             COM              284868106      272   305100 SH       SOLE    01             305100        0        0
EMPIRE RESORTS INC             NOTE  5.500% 7/3 292052AB3      357   550000 PRN      SOLE    01             550000        0        0
EP MEDSYSTEMS INC              COM              26881P103      317   122000 SH       SOLE    01             122000        0        0
EQUITY RESIDENTIAL             SH BEN INT       29476L107      252     6914 SH       SOLE    01               6914        0        0
FELDMAN MALL PPTYS INC         COM              314308107    13223   970300 SH       SOLE    01             970300        0        0
FORD MTR CO DEL                COM PAR $0.01    345370860      768    75000 SH       SOLE    02              75000        0        0
FREEPORT-MCMORAN COPPER & GO   NOTE  7.000% 2/1 35671DAK1       34    25000 PRN      SOLE    01              25000        0        0
FREMONT GEN CORP               COM              357288109    17091   736700 SH       SOLE    01             736700        0        0
FRONTLINE LTD                  ORD              G3682E127      207     5200 SH       SOLE    01               5200        0        0
GABLES RESIDENTIAL TR          SH BEN INT       362418105     1048    24200 SH       SOLE    01              24200        0        0
GAMESTOP CORP                  COM CL B         36466R200      707    25519 SH       SOLE    01              25519        0        0
GATEWAY INC                    COM              367626108     3300  1000000 SH       SOLE    02            1000000        0        0
GENERAL ELEC CO                COM              369604103     1112    31800 SH       SOLE    01 02           31800        0        0
GENERAL MLS INC                DBCV        10/2 370334AU8     1489  2101000 PRN      SOLE    01            2101000        0        0
GENERAL MLS INC                COM              370334104      266     5500 SH       SOLE    01               5500        0        0
GENERAL MTRS CORP              DEB SR CV C 33   370442717     1594    71000 SH       SOLE    01              71000        0        0
GOODRICH CORP                  COM              382388106     1024    25000 SH       SOLE    02              25000        0        0
GOODYS FAMILY CLOTHING INC     COM              382588101      444    60196 SH       SOLE    02              60196        0        0
HANOVER COMPRESSOR CO          COM              410768105      530    44950 SH       SOLE    01              44950        0        0
HEALTHCARE RLTY TR             COM              421946104      281     7305 SH       SOLE    01 02            7305        0        0
HEINZ H J CO                   COM              423074103      885    25000 SH       SOLE    02              25000        0        0
HILTON HOTELS CORP             NOTE  3.375% 4/1 432848AZ2       37    30000 PRN      SOLE    01              30000        0        0
HOOPER HOLMES INC              COM              439104100       66    16000 SH       SOLE    02              16000        0        0
HORACE MANN EDUCATORS CORP N   NOTE  1.425% 5/1 440327AG9      136   295000 PRN      SOLE    01             295000        0        0
HUMAN GENOME SCIENCES INC      NOTE  2.250%10/1 444903AK4   265256  2350000 PRN      SOLE    01            2350000        0        0
HYDROGENICS CORP               COM              448882100      175    50000 SH       SOLE    01              50000        0        0
IDEC PHARMACEUTICALS CORP      NOTE         2/1 449370AC9     1580  1000000 PRN      SOLE    01            1000000        0        0
INTERACTIVE DATA CORP          COM              45840J107      224    11000 SH       SOLE    01              11000        0        0
INTL PAPER CO                  DBCV         6/2 460146BM4       55   100000 PRN      SOLE    01             100000        0        0
INVITROGEN CORP                NOTE  1.500% 2/1 46185RAK6      464   500000 PRN      SOLE    01             500000        0        0
ISHARES TR                     DJ US UTILS      464287697     1184    16025 SH       SOLE    01              16025        0        0
ISHARES TR                     RUSSELL1000GRW   464287614     3766    78000 SH       SOLE    01              78000        0        0
ISHARES TR                     S&P 500 INDEX    464287200    12460   103562 SH       SOLE    01             103562        0        0
ISHARES TR                     RUSSELL1000VAL   464287598     4296    64000 SH       SOLE    01              64000        0        0
JOS A BANK CLOTHIERS INC       COM              480838101      473    10931 SH       SOLE    02              10931        0        0
KELLWOOD CO                    DBCV  3.500% 6/1 488044AF5      874  1000000 PRN      SOLE    01            1000000        0        0
KERZNER INTL LTD               NOTE  2.375% 4/1 492520AB7     1737  1500000 PRN      SOLE    01            1500000        0        0
KFX INC                        COM              48245L107    13809  1179564 SH       SOLE    01            1179564        0        0
KOHLS CORP                     COM              500255104     8202   146700 SH       SOLE    02             146700        0        0
KRAFT FOODS INC                CL A             50075N104      795    25000 SH       SOLE    02              25000        0        0
KRISPY KREME DOUGHNUTS INC     COM              501014104    20897  3002500 SH       SOLE    02            3002500        0        0
LENNAR CORP                    CL B             526057302      207     3500 SH       SOLE    01               3500        0        0
LENNOX INTL INC                NOTE  6.250% 6/0 526107AB3      726   585000 PRN      SOLE    01             585000        0        0
LEUCADIA NATL CORP             COM              527288104    28749   742123 SH       SOLE    01 02          742123        0        0
LEUCADIA NATL CORP             NOTE  3.750% 4/1 527288AX2      563   548000 PRN      SOLE    01             548000        0        0
LIBERTY MEDIA CORP             DEB   3.500% 1/1 530715AN1      224   250000 PRN      SOLE    01             250000        0        0
LIBERTY MEDIA CORP NEW         COM SER A        530718105      176    17100 SH       SOLE    01              17100        0        0
LIONS GATE ENTMNT CORP         COM NEW          535919203      157    15000 SH       SOLE    01              15000        0        0
LOUISIANA PAC CORP             COM              546347105    36160  1471100 SH       SOLE    02            1471100        0        0
LOWES COS INC                  NOTE  0.861%10/1 548661CG0     2405  2353000 PRN      SOLE    01            2353000        0        0
LTX CORP                       NOTE  4.250% 8/1 502392AE3      490   500000 PRN      SOLE    01             500000        0        0
MCDONALDS CORP                 COM              580135101     1689    60208 SH       SOLE    01 02           60208        0        0
MCLEODUSA INC                  CL A             582266706       32   453132 SH       SOLE    01             453132        0        0
MCMORAN EXPLORATION CO         NOTE  6.000% 7/0 582411AB0       22   100000 PRN      SOLE    01             100000        0        0
MEDTRONIC INC                  DBCV  1.250% 9/1 585055AD8     2203  2200000 PRN      SOLE    01            2200000        0        0
MENTOR GRAPHICS CORP           NOTE  6.875% 6/1 587200AB2       77    78000 PRN      SOLE    01              78000        0        0
MERCER INTL INC                NOTE  8.500%10/1 588056AG6      510   500000 PRN      SOLE    01             500000        0        0
MERISTAR HOSPITALITY CORP      NOTE  9.500% 4/0 58984YAJ2      177   140000 PRN      SOLE    01             140000        0        0
MICRON TECHNOLOGY INC          COM              595112103      132    12000 SH       SOLE    01              12000        0        0
MIKOHN GAMING CORP             COM              59862K108     6088   300700 SH       SOLE    01             300700        0        0
MILLENNIUM CELL INC            COM              60038B105       82    55000 SH       SOLE    01              55000        0        0
MISSION WEST PPTYS INC         COM              605203108      242    23700 SH       SOLE    01              23700        0        0
MITTAL STEEL CO N V            NY REG SH CL A   60684P101     4379   186043 SH       SOLE    01             186043        0        0
MOLSON COORS BREWING CO        CL B             60871R209      332     5500 SH       SOLE    01               5500        0        0
MORGAN STANLEY                 COM NEW          617446448      146    28000 SH  PUT  SOLE    02              28000        0        0
MORTGAGEIT HLDGS INC           COM              61915Q108     9504   492200 SH       SOLE    01             492200        0        0
MYLAN LABS INC                 COM              628530107      908    47257 SH       SOLE    01              47257        0        0
NATIONAL HEALTH INVS INC       COM              63633D104     9397   333000 SH       SOLE    01             333000        0        0
NATIONAL HEALTHCARE CORP       COM              635906100      282     8000 SH       SOLE    02               8000        0        0
NATIONAL OILWELL VARCO INC     COM              637071101      625    13152 SH       SOLE    01              13152        0        0
NATIONSHEALTH INC              *W EXP 08/24/200 63860C118       13    10000 SH       SOLE    01              10000        0        0
NEIGHBORCARE INC               COM              64015Y104     2019    66980 SH       SOLE    01              66980        0        0
NEW YORK & CO INC              COM              649295102    19561   928800 SH       SOLE    02             928800        0        0
NEWS CORP                      CL A             65248E104      413    25005 SH       SOLE    01              25005        0        0
NICOR INC                      COM              654086107     7150   171600 SH       SOLE    01             171600        0        0
OCWEN FINL CORP                COM              675746101      151    22100 SH       SOLE    01              22100        0        0
OFFICEMAX INC DEL              COM              67622P101       88   404100 SH  CALL SOLE    02             404100        0        0
OFFICEMAX INC DEL              COM              67622P101    70695  2374700 SH       SOLE    02            2374700        0        0
OIL SVC HOLDRS TR              DEPOSTRY RCPT    678002106      233     2500 SH       SOLE    01               2500        0        0
OMI CORP                       NOTE  2.875%12/0 670874AF3     3668  3963000 PRN      SOLE    01            3963000        0        0
OMNICOM GROUP INC              NOTE         6/1 681919AR7       14    14000 PRN      SOLE    01              14000        0        0
OMNICOM GROUP INC              NOTE         2/0 681919AK2       73    74000 PRN      SOLE    01              74000        0        0
OREGON STL MLS INC             COM              686079104      206    12000 SH       SOLE    01              12000        0        0
PACIFIC SUNWEAR CALIF INC      COM              694873100     2085    90709 SH       SOLE    02              90709        0        0
PEP BOYS MANNY MOE & JACK      COM              713278109     6505   480400 SH       SOLE    02             480400        0        0
PEPSICO INC                    COM              713448108     2966    55000 SH       SOLE    02              55000        0        0
PG&E CORP                      COM              69331C108    21800   579902 SH       SOLE    01             579902        0        0
PHOTRONICS INC                 NOTE  2.250% 4/1 719405AE2     2132  1400000 PRN      SOLE    01            1400000        0        0
PRENTISS PPTYS TR              SH BEN INT       740706106      378    10266 SH       SOLE    01              10266        0        0
PRG-SCHULTZ INTERNATIONAL IN   COM              69357C107       86    25044 SH       SOLE    01              25044        0        0
PROLOGIS                       SH BEN INT       743410102      511    12667 SH       SOLE    01              12667        0        0
PSS WORLD MED INC              NOTE  2.250% 3/1 69366AAB6      470   500000 PRN      SOLE    01             500000        0        0
PUBLIC STORAGE INC             COM              74460D109      426     6812 SH       SOLE    01               6812        0        0
QLT INC                        NOTE  3.000% 9/1 746927AB8      454   490000 PRN      SOLE    01             490000        0        0
RENTECH INC                    COM              760112102       74    50000 SH       SOLE    01              50000        0        0
RES-CARE INC                   COM              760943100      266    19600 SH       SOLE    02              19600        0        0
RETAIL VENTURES INC            COM              76128Y102      154    11300 SH       SOLE    02              11300        0        0
RF MICRODEVICES INC            NOTE  1.500% 7/0 749941AE0      896  1000000 PRN      SOLE    01            1000000        0        0
RICHARDSON ELECTRS LTD         SDCV  8.250% 6/1 763165AC1      209   209000 PRN      SOLE    01             209000        0        0
RICHARDSON ELECTRS LTD         SDCV  7.250%12/1 763165AB3       88    88000 PRN      SOLE    01              88000        0        0
ROBBINS & MYERS INC            NOTE  8.000% 1/3 770196AB9      598  1311000 PRN      SOLE    01            1311000        0        0
ROSS STORES INC                COM              778296103      870    30100 SH       SOLE    02              30100        0        0
SAFETY INS GROUP INC           COM              78648T100      285     8500 SH       SOLE    01               8500        0        0
SCI SYS INC                    NOTE  3.000% 3/1 783890AF3       33    35000 PRN      SOLE    01              35000        0        0
SEARS HLDGS CORP               COM              812350106     1440     9867 SH       SOLE    01               9867        0        0
SEMICONDUCTOR HLDRS TR         DEP RCPT         816636203      706    20352 SH       SOLE    01              20352        0        0
SHIP FINANCE INTERNATIONAL L   SHS              G81075106      186    10000 SH       SOLE    01              10000        0        0
SIEBEL SYS INC                 COM              826170102       92    10000 SH       SOLE    01              10000        0        0
SIRVA INC                      COM              82967Y104      425    50000 SH       SOLE    02              50000        0        0
SKYWORKS SOLUTIONS INC         NOTE  4.750%11/1 83088MAB8       51    50000 PRN      SOLE    01              50000        0        0
SL GREEN RLTY CORP             COM              78440X101      545     8463 SH       SOLE    01               8463        0        0
SPDR TR                        UNIT SER 1       78462F103    25419   213385 SH       SOLE    01             213385        0        0
STAGE STORES INC               COM NEW          85254C305      219     5015 SH       SOLE    02               5015        0        0
STREETTRACKS GOLD TR           GOLD SHS         863307104    39400   907000 SH       SOLE    02             907000        0        0
SUNTERRA CORP                  NOTE  3.750% 3/2 86787DAC3     1148  1000000 PRN      SOLE    01            1000000        0        0
SUPERVALU INC                  NOTE        11/0 868536AP8      511  1500000 PRN      SOLE    01            1500000        0        0
SYNTROLEUM CORP                COM              871630109      180    20000 SH       SOLE    01              20000        0        0
SYSCO CORP                     COM              871829107     9047   250000 SH       SOLE    02             250000        0        0
TAUBMAN CTRS INC               COM              876664103      385    11452 SH       SOLE    01              11452        0        0
TERRA INDS INC                 COM              880915103      806   114750 SH       SOLE    01             114750        0        0
THERMA-WAVE INC                COM              88343A108       15    10000 SH       SOLE    01              10000        0        0
THERMO ELECTRON CORP           SDCV  3.250%11/0 883556AJ1     1329  1357000 PRN      SOLE    01            1357000        0        0
THOMAS PPTYS GROUP INC         COM              884453101     2919   240638 SH       SOLE    01             240638        0        0
TIME WARNER INC                COM              887317105      495    28661 SH       SOLE    01              28661        0        0
TOO INC                        COM              890333107    11788   504400 SH       SOLE    02             504400        0        0
TOYS R US INC                  COM              892335100      523    19900 SH       SOLE    01              19900        0        0
TRIAD HOSPITALS INC            COM              89579K109      332     6070 SH       SOLE    01 02            6070        0        0
UNITED RENTALS NORTH AMER IN   NOTE  1.875%10/1 911365AH7       19    20000 PRN      SOLE    01              20000        0        0
VAALCO ENERGY INC              COM NEW          91851C201       36    10968 SH       SOLE    01              10968        0        0
VALOR COMMUNICATIONS GROUP I   COM              920255106    13911   995800 SH       SOLE    01             995800        0        0
VECTOR GROUP LTD               NOTE  6.250% 7/1 92240MAC2      997  1061000 PRN      SOLE    01            1061000        0        0
VECTOR GROUP LTD               NOTE  5.000%11/1 92240MAE8      256   200000 PRN      SOLE    01             200000        0        0
VECTOR GROUP LTD               COM              92240M108    33426  1800000 SH       SOLE    02            1800000        0        0
VISION-SCIENCES INC DEL        COM              927912105      201    75480 SH       SOLE    01              75480        0        0
WASTE CONNECTIONS INC          DBCV         5/0 941053AE0       82    69000 PRN      SOLE    01              69000        0        0
WEATHERFORD INTL INC           DBCV         6/3 947074AB6      191   300000 PRN      SOLE    01             300000        0        0
WET SEAL INC                   CL A             961840105     1590   233421 SH       SOLE    02             233421        0        0
WORTHINGTON INDS INC           COM              981811102      267    17001 SH       SOLE    01              17001        0        0
XCEL ENERGY INC                COM              98389B100      827    42200 SH       SOLE    01              42200        0        0