The ornamental design for a ceiling mounted lightfixture, as shown and described.
FIG. 1 is a front elevational view of a ceiling mounted light fixture
showing my new design, the left side elevational, right side elevational
and rear elevational views being identical thereto;
FIG. 2 is a bottom view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom plan view of a second embodiment of the design, wherein
only the base is claimed; and,
FIG. 5 is a front elevational view thereof, the left side, right side and
rear elevational views being identical thereto.