The ornamental design for a bottlecap, as shown and described.
FIG. 1 is a front elevational view of a bottle cap showing our new design,
environmental structure associated therewith being shown for illustrative
purposes in dotted outline and forming no part of the claimed design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a side elevational view thereof, the opposite side elevational
view being a mirror image thereof; and,
FIG. 4 is a top plan view thereof, FIGS. 2, 3, and 4 being shown on an
enlarged scale.