John D. Strassini appeals the district court’s orders dismissing three of the claims in his § 1983 action and denying his motion to add four defendants and change the caption of the case. The Government has filed a motion to dismiss the appeal as interlocutory. We grant the Government’s motion and dismiss the appeal for lack of jurisdiction because the orders are not appealable. This court may exercise jurisdiction only over final orders, 28 U.S.C. § 1291 (1994), and certain interlocutory and collateral orders, 28 U.S.C. § 1292 (1994); Fed.R.Civ.P. 54(b); Cohen v. Beneficial Indus. Loan Corp., 337 U.S. 541, 69 S.Ct. 1221, 93 L.Ed. 1528 (1949). The orders here appealed are neither final orders nor appealable interlocutory or collateral orders. We dismiss the appeal as interlocutory. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

DISMISSED.