WASHINGTON (AP)  Regulators on Friday shut down three affiliated banks in Florida and one each in Nevada and California, bringing the number of bank failures this year to 78.

The Federal Deposit Insurance Corporation took over the three Florida banks, all owned by the Bank of Florida Corporation, a bank holding company.

Those banks are Bank of Florida-Southeast, based in Fort Lauderdale, with $595.3 million in assets; Bank of Florida-Southwest, based in Naples, with $640.9 million in assets; and Bank of Florida-Tampa Bay, based in Tampa, with $245.2 million in assets.

The F.D.I.C. also seized the Sun West Bank of Las Vegas, with $360.7 million in assets, and the Granite Community Bank, located in Granite Bay, Calif., with $102.9 million in assets.