A 57-year-old Dallas-area bank robber dubbed the “Toboggan Bandit” was sentenced Thursday to 34 years in federal prison, the U.S. attorney’s office said.

Jim Wesley Davis of Denison pleaded guilty in April to two counts of using, carrying and brandishing a firearm during and in relation to a crime of violence, said Kathy Colvin, spokeswoman for the U.S. attorney in Dallas.

The charges stemmed from a string of bank robberies in Dallas and Richardson in November and December, Ms. Colvin said. Mr. Davis was arrested at his home in January.

Mr. Davis wore sunglasses, a toboggan cap and a shoulder bag during the robberies. He pointed a handgun at employees or customers and once held a gun to a customer’s back and said, “be quiet,” authorities said.

U.S. District Judge Jane J. Boyle presided over the sentencing.