He said that there have been other shootings of couples parked in deserted areas, but that none resulted in a death, and could not say how many have been turned up. Besides the bullet, there is no other clue to the gunman's identity.

He dismissed comparisons between the two shootings and the Son of Sam case, in which 13 people were shot and 6 were killed, mostly couples parked on deserted lovers' lanes. "It's too early in the investigation to know whether it's anything like that," said Chief Borrelli, who led the investigation that led to the conviction of David Berkowitz in the case.

The man killed on Sunday, Giovanni Salamone, 24 years old, of 30-16 42d Street in Astoria, Queens, was parked in a four-door Nissan with his 19-year-old girlfriend on an isolated section of 193d Street adjacent to Peck Park in Bayside, Queens. Bullet Misses Companion

At 12:45 A.M., a man approached the car by foot along the sidewalk and fired from close range into the car's front window on the passenger side, the police said. The bullet missed the young woman, hitting Mr. Salamone under the arm and lodging in his stomach, Commissioner Brown said. He died at 5:15 A.M. at North Shore University Hospital, a hospital spokeswoman said.

The copper-jacketed bullet found at the scene was fired from the same 9-millimeter automatic handgun used in a shooting onMarch 21 in Queens, when a bullet shattered the jaw of a 29-year-old woman sitting in a four-door Honda with a 28-year-old man, Commissioner Brown said.