Portion of an electronic mouse

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

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof.

The broken line showing of various regions in the Figures and the unshaded areas therein is for illustrative purposes only and forms no part of the claimed design.