25 C.F.R. § 227.15
All payments due the lessor shall be made to the superintendent for the benefit of the Shoshone Indian Tribe, in accordance with the act of August 21, 1916 (39 Stat. 519), and no credit will be given any lessee for payments made otherwise. Payments of rentals and royalties except the first year's rental, which shall be paid to the superintendent as prescribed in § 227.4 shall be transmitted to the superintendent through the supervisor. All such payments shall be accompanied by a statement, in triplicate, by the lessee, showing the specific items of royalty or rental that the remittance is intended to cover, and payment of royalties on production shall be made not later than the last day of the calendar month following the production for which such payment is to be made.
25 C.F.R. §227.15