The FDIC took over three banks yesterday, bringing the total number of bank failures so far this year to 22. As I posted, the FDIC likes to close banks on Friday after hours so they can reopen as branches of the acquiring bank on the following Monday morning. But the U.S. better be working overtime this weekend because Citigroup (NYSE: C) is going to need a merger partner or a government rescue to keep it from becoming history's biggest bank failure.

Of the three banks that failed Friday, two were in California -- Downey Savings and Loan Association (with $12.8 billion in assets and deposits of $9.7 billion), based in Newport Beach, and PFF Bank & Trust of Pomona (with assets of $3.7 billion and $2.4 billion in deposits) -- and the third was in Georgia: The Community Bank, with $681 million in assets and $611.4 million in deposits in Loganville.

In each case, the FDIC arranged for a healthier bank to take over the deposits, branches, and some of the assets of the failed one. U.S. Bancorp (NYSE: USB) acquired the deposits of the two California banks that were brought down by Option ARM mortgages -- which allow a borrower to skip payments and add the amount to the loan principle -- and housing construction loans. Bank of Essex, of Tappahannock, Va., bought all the bank deposits and $84.4 million of The Community Bank's assets -- the FDIC took on the rest.