The ornamental design for a roundcrib with dometop, as shown and described.
FIG. 1 is a front elevational view of the present invention (a rear
elevational view, a left side elevational view and a right side
elevational view are the same as the front elevational view of the present
invention because they are symmetrical);
FIG. 2 is a top plan view thereof; and,
FIG. 3 is a bottom plan view thereof.
The broken lines are for environmental purposes only and form no part of
the claimed design.