PORTHDINLLAEN, NORTH WALES.—At about 9.30 A.M. on the 6th November, signals of distress were shown by the screw flat Llysfaen, of Liverpool, during a N. gale and a heavy sea. The George Moore Life-boat put off to her assistance, and was requested to remain by her until low-water, when the vessel struck the ground and commenced to leak; the chains were then slipped, she was run ashore, and immediately sank, her crew of three men being safely landed by the Life-boat..