Has anyone ever noticed the way Federal Reserve is capitalized in 415, as oppposed to the way Federal reserve is capitallized in 411?

12 USC 415 Any Federal Reserve bank may at any time reduce its liability for outstanding Federal Reserve notes by depositing with the Federal Reserve agent its Federal Reserve notes, gold certificates, Special Drawing Right certificates, or lawful money of the United States. Federal Reserve notes so deposited shall not be reissued, except upon compliance with the conditions of an original issue. The liability of a Federal Reserve bank with respect to its outstanding Federal Reserve notes shall be reduced by an amount paid by such bank to the Secretary of the Treasury under section 4 of the Old Series Currency Adjustment Act.
12 USC 411 Federal reserve notes, to be issued at the discretion of the Board of Governors of the Federal Reserve System for the purpose of making advances to Federal reserve banks through the Federal reserve agents as hereinafter set forth and for no other purpose, are authorized. The said notes shall be obligations of the United States and shall be receivable by all national and member banks and Federal reserve banks and for all taxes, customs, and other public dues. They shall be redeemed in lawful money on demand at the Treasury Department of the United States, in the city of Washington, District of Columbia, or at any Federal Reserve bank.1
Does this change the meaning? Are there different species of Federal Reserve Notes? What's the deal with this?