NEW BEDFORD, Sept 25. — Arr barque Isabella, Taber, 115 days from N Zealand, 1800 bbls oil. Reports Feb. 1st, Bowditch, Ramsdell, Bristol, 300; 3d Mary, Coffin, Nantucket, 980; 6th, Rebecca Sims, Ray, N Bedford, 600; 10th, Brighton, Smith, 1000(has been reported March 30, 700); April 8th, Clarkson, Plaskett, Nant. 2500; 18th Pacific, Congdon, do, 1900; Envoy, Clark, Providence, 1900; 25th, Phenix, Sandford, N Bedford, 1900; May 1st, Cortes, Bunker, do, 2400, for home; 5th Cadmus, Crowell, Fairhaven, 2000, for do; 5th, America, Nant, 1200; Japan, do, 2000; 5th John Coggeshall, Newport, 1000; 20th, Rambler, Nant, 1200; Mt. Vernon, do 1500; 27th, Atlantic, do, 1000; May 7th, Ploughboy, do 1850; Ganges, Bristol, 400; Lexington, Nant. none; Splendid, Edgartown, 1000.