The ornamental design for an auxiliarypouch, as shown and described.
FIG. 1 is a perspective view of a an auxiliary pouch;
FIG. 2 is a front view of the auxiliary pouch;
FIG. 3 is a rear view of the auxiliary pouch;
FIG. 4 is a left side view of the auxiliary pouch;
FIG. 5 is a right side view of the auxiliary pouch;
FIG. 6 is a plan view of the auxiliary pouch;
FIG. 7 is a bottom view of the auxiliary pouch; and,
FIG. 8 is a reduced scale, environmental view of the auxiliary pouch.
The objects represented by broken lines in FIG. 8 form no part of the claimed design and are included for the purpose of illustrating the environment in which the auxiliary pouch may be used.