DETROIT, SEPT. 20 -- Cornerback Terry Taylor of the Detroit Lions today became the seventh player to be barred for life under the National Football League's drug policy.

The Lions, who got him from the Seattle Seahawks last season for running back James Jones, said they would not appeal the league action, based on Taylor's third positive test for substance abuse. He can reapply for reinstatement in a year.

"It's always a shock to find out something like that," Coach Wayne Fontes said, "and my heart is heavy and saddened. But we have to go on and hope things work out for Terry."

Neither Taylor nor his agent could be reached by telephone today.

"The system for an alleged appeal really speaks for itself," said Richard Berthelsen, general counsel to the National Football League Players Association in Washington, D.C. "For him to appeal to the person who decided he should be out of the game in the first place is an exercise in futility."

Berthelsen declined to say whether Taylor had contacted the association for help.

The other players banned for life under the NFL's drug program were running backs Tony Collins of the Colts, Charles White of the Rams, Stanley Wilson of the Bengals and Earl Ferrell of the Cardinals, and defensive ends Dexter Manley of the Redskins and Frank Warren of the Saints. Collins was reinstated this season, but was released a week ago by the Miami Dolphins.

Teammate Leroy Irvin, signed as a free agent this year, said he had talked to Taylor and that Taylor was devastated.

Taylor has been dogged by trouble for most of his seven-year career, which began when he was chosen by Seattle as the 22nd player in the 1984 draft.

In Seattle, he twice tested positive for substance abuse. He was treated once and fought a 1988 four-game suspension in court.

He was charged with assault after he allegedly punched a woman in the mouth outside a suburban Seattle video store in September 1987. The complaint was settled out of court and Taylor paid the woman unspecified damages.

Taylor also had numerous traffic violations and missed court appearances, according to court records. He has no criminal record in Michigan, Oakland County police said.

He started the first two regular season games with the Lions, recording 10 tackles. Nine-year veteran Bruce McNorton or second-year player Ray Crockett will replace him in the Lions defense, already dented by injuries to linebacker Chris Spielman and nose tackle Jerry Ball.