EXHIBIT NO. 99.10
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the reference made to our firm under the captions
"Financial Highlights" in each Prospectus and "Independent Auditors and
Financial Statements" in each Statement of Additional Information and to the
incorporation by reference in this Post-Effective Amendment No. 29 to
Registration Statement No. 33-1657 on Form N-1A of our report dated July 7, 2000
on the financial statements and financial highlights of MFS Emerging Markets
Equity Fund, MFS International Growth and Income Fund and MFS International
Growth Fund, each a series of MFS Series Trust X, included in the 2000 Annual
Reports to Shareholders.
ERNST & YOUNG LLP
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Ernst & Young LLP
Boston, Massachusetts
September 22, 2000
