The driver of a van that transports visitors to Lorton Reformatory in Virginia was shot and killed on a downtown street corner Tuesday night during an argument with another van driver, D.C. police reported.

Police said that Tony C. Mitchell, 33, of 4525 Davis Ave., Suitland, was shot once in the chest with a small-caliber pistol and was pronounced dead a short time later. The wife of the man he was arguing with was arrested and charged with homicide, they said.

Mitchell, an employe of the D.C. Department of Recreation, had been driving the shuttle van for two weeks, police said.

The suspect, Deborah Hammill, 27, of 8124 Prescott Dr., Vienna, was charged shortly after the 6 p.m. shooting and was being held last night pending arraignment, police said. Her husband Raymond was charged with disorderly conduct, police said.

The incident occurred at 11th and G streets NW, an assembly point for persons who wish to use the privately operated van service for the 20-mile trip to Lorton to visit inmates there.

Yesterday, about a half-dozen vans had gathered at the intersection, police said, and about 40 people were lined up waiting to board, when two of the drivers began arguing over which van some passengers were to board.

Raymond Hammill told a reporter afterward that he was struck, knocked down, and was being beaten by several men. Hammill said he didn't recall anything about the actual shooting.