The ornamental design for a laryngealmask, as shown and described.
FIG. 1 is a perspective view of a laryngeal mask showing my new design.
FIG. 2 is a top plan view thereof.
FIG. 3 is a back plan view thereof.
FIG. 4 is a first side view thereof.
FIG. 5 is a second side view thereof.
FIG. 6 is a front plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The evenly broken lines in the drawings illustrate portions of the laryngeal mask that form no part of the claimed design. The dot-dot-dash broken lines in FIGS. 1 and 2 indicate boundary lines which enclose areas that form no part of the claimed design.