Wellington, New Zealand, June 18.--( From a private letter. )--"Among the latest arrivals is Mr Swainson, F.R.S., the eminent naturalist, by the Jane, from London. He has purchased a house, and intends to reside here with his family. The Governor, Captain Hobson, is daily expected from Auckland on a visit to Colonel Wakefield, the company's agent. Several emigrant ships have lately reached us. The Katherine Stewart, Forbes, from London, has just entered the harbour."

