FIG. 1 is a perspective view of a butterfly lamp showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a partial enlarged view of FIG. 1;
FIG. 10 is a partial enlarged view of FIG. 1;
FIG. 11 is a partial enlarged view of FIG. 1;
FIG. 12 is a partial enlarged view of FIG. 2;
FIG. 13 is a partial enlarged view of FIG. 2;
FIG. 14 is a partial enlarged view of FIG. 2;
FIG. 15 is a partial enlarged view of FIG. 3;
FIG. 16 is a partial enlarged view of FIG. 7; and,
FIG. 17 is a partial enlarged view of FIG. 8.
The dash-dash broken lines in FIGS. 1-3 and 7-17 are included for the purposes of depicting the partial enlarged views and form no part of the claimed design.