[ARTICLE] 6
[CIK] 0000880583
[NAME] THE TRAVELERS SERIES TRUST
[SERIES]
   [NUMBER] 8
   [NAME] MFS EMERGING GROWTH PORTFOLIO
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          DEC-31-1999
[PERIOD-END]                               JUN-30-1999
[INVESTMENTS-AT-COST]                      175,365,776
[INVESTMENTS-AT-VALUE]                     230,282,370
[RECEIVABLES]                                3,106,151
[ASSETS-OTHER]                                  18,878
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             233,407,399
[PAYABLE-FOR-SECURITIES]                     5,493,277
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      237,169
[TOTAL-LIABILITIES]                          5,930,446
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   162,856,722
[SHARES-COMMON-STOCK]                       11,991,397
[SHARES-COMMON-PRIOR]                       10,081,086
[ACCUMULATED-NII-CURRENT]                    (285,769)
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                     10,189,568
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                    54,916,432
[NET-ASSETS]                               227,676,953
[DIVIDEND-INCOME]                              209,707
[INTEREST-INCOME]                              382,243
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                 877,719
[NET-INVESTMENT-INCOME]                      (285,769)
[REALIZED-GAINS-CURRENT]                    12,232,892
[APPREC-INCREASE-CURRENT]                   11,789,699
[NET-CHANGE-FROM-OPS]                       23,736,822
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      2,051,591
[NUMBER-OF-SHARES-REDEEMED]                    141,280
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                      57,617,829
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                  (2,043,324)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          788,313
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                880,719
[AVERAGE-NET-ASSETS]                       196,578,766
[PER-SHARE-NAV-BEGIN]                            16.87
[PER-SHARE-NII]                                 (0.02)
[PER-SHARE-GAIN-APPREC]                          02.14
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              18.99
[EXPENSE-RATIO]                                  00.90
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>