The unshaven robber didn't show a weapon, but demanded money, frightening the Roslyn Savings Bank teller into handing over the cash, a police spokeswoman said.
The robbery happened at the branch at 75 N. Central Ave.
Cops are looking for the robber, who's between 5-foot-7 and 6 feet tall and has a dark complexion. In addition to the baseball hat and the wig, which had black, curly hair, the robber wore a dark, puffy jacket and blue jeans, police said.
No one was hurt. Police wouldn't say how much he stole.