The ornamental design for a forceps, as shown and described.
FIG. 1 is a left side elevational view of a forceps according to the invention.
FIG. 2 is a right side elevational view of the forceps of FIG. 1.
FIG. 3 is a top plan view of the forceps of FIG. 1.
FIG. 4 is a bottom plan view of the forceps of FIG. 1.
FIG. 5 is a front perspective view of the forceps of FIG. 1.
FIG. 6 is a rear perspective view of the forceps of FIG. 1; and,
FIG. 7 is a three quarter view of the forceps of FIG. 1.
The broken lines showing portions of a forceps are included for the purpose of illustrating environmental structure and form no part of the claimed design.