Dr. and Mrs. Harry Thomas announce the arrival of a son, Christopher Bedell Thomas, on September 3 at Mercy Hospital. Mrs. Thomas is the former Carolyn Bedell of Bellmore. Mr. and Mrs. Peter S. Lilienthal of 23-35 Bell Boulevard, Bayside, announce the birth of a son, Ryan Holden, on August 31 at North Shore Hospital. Mrs. Lilienthal is the former Evelyn Jablow of Bellmore. The Lilienthals are also the parents of 3 year old Stephen Ross, Mr. and Mrs. Richard Larkin of 2763 Beth Court announce the birth of a daughter, Colleen Ellen, on August 22 at South Nassau Communities Hospital. James and Sheila Dunne of 14 Circle Drive announce the birth of a son, Douglas Edward, on Thursday, August 28 at Mercy Hospital,