WASHINGTON (AP) _ A search is under way for family members of 39 casualties of the Vietnam War whose names are being added to those listed on the Vietnam Veterans Memorial.

The 39 casualties are among 109 names that were omitted from the list of Vietnam War dead originally inscribed on the V-shaped memorial on the Mall in Washington.

A Memorial Day ceremony is planned to honor the servicemen who are being added, and the Vietnam Veterans Memorial Fund is trying to locate the family members to invite them to the ceremony.

''Neither the Defense Department nor the Vietnam Veterans Memorial Fund have addresses for any relatives of these men,'' said Rebecca Kirtland, vice president of the fund.

The names of 95 servicemen who died during the Vietnam War were left off the Memorial because of a technicality, and 14 others who are being added died later of wounds sustained in Vietnam, she said.

Anyone knowing relatives of one of the following names is asked to call the fund at 202-659-9419.

Those men, with their rank, service and home of record:

-Lt. Col. James L. Vaughn, Air Force, Huntsville, Ark.

-Sgt. Kenneth Alston, Air Force, Santee, Calif.

-Maj. Gene T. Wright, Air Force, San Diego, Calif.

-Ensign Allan Lombard Dunning Jr., Navy, Stonington, Conn.

-Maj. Warren L. Long, Air Force, Ona, Fla.

-Sgt. Arthur B. Crews, Air Force, Barnesville, Ga.

-Petty Officer 1st Class Weslie David Mewborn, Navy, Atlanta.

-Staff Sgt. Glen E. Wallace, Air Force, Albany, Ga.

-Staff Sgt. Clyde A. Crow, Air Force, Boise, Idaho.

-1st Lt. Terry L. Banning, Air Force, Andalusia, Ill.

-Lt. Cmdr. John Clarence Thomas, Navy, Portland, Ind.

-Maj. William J. Griffin, Air Force, Homedale, Iowa.

-1st Lt. James N. Spangler, Air Force, Mayking, Ky.

-Staff Sgt. Charles E. Stuart, Bangor, Maine.

-Lance Cpl. Gregory Chalmers Davis, Marine Corps, N. Andover, Mass.

-Airman 1st Class James E. Francis, Air Force, St. Louis.

-Capt. Russell L. Platt, Air Force, Las Cruces, N.M.

-Airman 1st Class Miguel A. Hernandez-Diaz, Air Force, New York City.

-Airman 1st Class Allan S. Major, Air Force, Maspeth, N.Y.

-Airman 1st Class Abraham Schwartz, Air Force, Brooklyn, N.Y.

-Capt. John G. Strobl, Air Force, Cincinnati.

-1st Lt. Robert H. Price, Air Force, Milton-Freewater, Ore.

-Sgt. Marvin L. Dooley, Air Force, Seneca, S.C.

-Sgt. Franklin D. Waters, Air Force, Greer, S.C.

-Sgt. Wayne Moneymaker, Air Force, Knoxville, Tenn.

-Maj. Ray E. McCune, Air Force, Waco, Texas.

-Capt. Jon M. Olsson, Air Force, San Antonio, Texas.

-Airman 1st Class Jan D. Miller, Air Force, Clarkston, Wash.

-Sgt. Alan C. Martin, Air Force, Nova Scotia, Canada.

The following, for whom no family members are known, died later of wounds received in Vietnam:

-Spec. 4 Ronnie D. Beets, Army, Odessa, Texas.

-Pfc. Charles K. Fink, Army, Bedford, Va.

-Petty Officer 2nd Class Christopher Loring Maher, Navy, Montgomery, Ala.

-Airman Michael Kelly McGuire, Navy, Buffalo, N.Y.

-Fireman Apprentice Charles Albert Philhower, Navy, Morristown, N.J.

-Pfc. Joel B. Simpson, Army, Battle Creek, Mich.

-Lance Cpl. James Edward Snock, Marine Corps, Philadelphia.

-Richard Edward Stephan, Navy, Mercer, N.J.

-Pfc. Joshua B. Stewart, Army, Salt Lake City.

-Spec. 4 Owen Webster, Army, Vinalhaven, Maine.