Two teen-agers were shot and wounded during a dance at the Kalorama roller rink early yesterday when a youth with a pistol, began firing wildly into the crowd, D.C. police reported.

A 16-year-old Northwest youth was arrested in the incident at 1661 Kalorama Rd. after a security guard pinned him to the floor and wrested the gun from him, police said.

Investigators said they determined later that the weapon was a D.C. policeman's service revolver that the officer had reported stolen from his Prince George's County home in 1976.

The youth was charged with two counts of assault with intent to kill and was being held at the juvenile receiving home last night.

The two wounded were identified as Cindy Thomas, 17, of 432 Massachusetts Ave. NW, and James Vaughn, 17, of 2327 15th St. NW. The girl was listed in serious condition at Howard University Hospital with a bullet wound in the back, while Vaughn was in good condition at Washington Hospital Center with a wound in the abdomen.

Police said at least four shots were fired in the 4:10 a.m. incidents, a more than 1,000 young persons were gathered inside the rink. They said they had been unable to determine what provoked the incident.