I claim the ornamental design for an interior skylight screen, as shown and described.
FIG. 1 is a perspective view of an interior skylight screen, showing a first embodiment of my new design;
FIG. 2 is a bottom plan view of FIG. 1;
FIG. 3 is a top plan view of FIG. 1;
FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;
FIG. 5 is a front elevational view thereof, the rear elevational view being a mirror image thereof;
FIG. 6 is a perspective view of a second embodiment thereof;
FIG. 7 is a bottom plan view of FIG. 6; and,
FIG. 8 is a top plan view of FIG. 6.
The broken lines showing an internal skylight in FIGS. 1 and 6 depict environmental matter and form no part of the claimed design. It is understood that FIGS. 4 and 5 represent both embodiments.