Portion of a tricycle

FIG. 1 is a right-side elevational view of a portion of a tricycle in accordance with our design with a tricycle which forms the environment of the portion of a tricycle and forms no part of the claimed design, the tricycle or portions thereof being shown in broken lines for illustrative purposes only, with the left-side elevational view being a mirror image thereof;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is an enlarged sectional view thereof taken along lines 6—6 of FIG. 1.