Portion of an electronic mouse

FIG. 1 is a front perspective view of a portion of an electronic mouse showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken line showing of a scroll wheel is for illustrative purposes and forms no part of the claimed design. The unshown bottom of the electronic mouse forms no part of the claimed design.