C&J Bus Lines is adding a second round-trip service between Ogunquit and New York City beginning next month. The Portsmouth, New Hampshire, company said the additional service for its executive-class bus will start May 20 to meet growing demand for more summer routes. It will operate Thursday through Monday, leaving from the Ogunquit Chamber of Commerce building on Route 1, heading to the Port Authority bus terminal in New York City. Departures will be at 8:45 a.m.