Lancet cover

FIG. 1 is a front perspective view illustrating my design for a lancet cover;

FIG. 2 is a front view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines shown in FIGS. 1-7 illustrate environment and form no part of the claimed design.