The nation's cities and towns will bear the burden of government cutbacks unless the Bush administration raises more revenue, said officials gathering Saturday for the National League of Cities convention.

Boston Mayor Raymond L. Flynn called the convention "an excellent opportunity to set an urban agenda for the nation's cities."More than 8,000 delegates from 1,300 local governments are expected to attend the 65th annual convention of the country's largest municipal organization.

The convention formally begins Monday, with Massachusetts Gov. Michael S. Dukakis, the unsuccessful Democratic candidate for president, as one of the scheduled speakers. Randy Arndt, spokesman for the league, said Saturday that Bush was invited to attend the convention but did not accept the invitation.