FIG. 1 is a perspective view of a lantern according to the new design. FIG. 2 is a front view of the lantern shown in FIG. 1. FIG. 3 is a side view of the lantern shown in FIG. 1. FIG. 4 is a rear view of the lantern shown in FIG. 1. FIG. 5 is a top view of the lantern shown in FIG. 1; and, FIG. 6 is a bottom view of the lantern shown in FIG. 1. Features shown in broken lines in the drawings are not part of the claim.