BOSTON--Thomas P. Glynn III, most recently general manager of the World Trade Center, was named to head the Massachusetts Bay Transportation Authority yesterday by Gov. Michael S. Dukakis.

"Tom has shown exceptional management capabilities throughout a distinguished public service career," Dukakis said during ceremonies at MBTA's South Station, which is undergoing a $190 million renovation.

"I can think of no better person to lead the MBTA into an exciting future that includes the challenge of building on the terrific foundation put in place by Jim O'Leary," the governor said.

Glynn is replacing O'Leary, MBTA's general manager for eight years.

Dukakis called Glynn "a career public manager whose strong, innovative style is just what we need to make the 'T' the best, most user-friendly system in the country."

Glynn, 42, of Belmont, said his priorities will be to improve services for passengers, boost employee morale, continue renovations of North and South stations, restore South Shore commuter rail service and continue upgrading equipment.

"The 'T' has turned around in recent years, but we still have our work cut out for us to provide the best service possible to our 650,000 daily customers," he said.

Prior to working for the World Trade Center, Glynn was a deputy welfare commissioner credited with creating the state's Employment and Training Program.