New York, May }7.- A dispatch from Willemstad, Curacoa, says: The Spanish eruisers Vizcaya and Maria Teresa left this port at 6 o'clock in the evening. Their destiriation is unknown. The four other Spanish warships which were off the harbor disappeared about noon, but in the evening one of the torpedo-boat destroyers was sighted again. While here the two warships took on a small quantity of coal and provisions. Their departure was due to a request by the goverr.ment to leave, as provided in the deeree of neutrality. There vvere no colliers with the fleet. A rumor says there are some commercial ships in this vicinity. Washington, May 17. - It is said at the navy department that Admiral Sampson reported to the navy department by cable from Cape Haytian. It is understood that the admiral by reason of Information just received by him, has changed his plans of operations and instead of going to Key West has directed his vessels towards Cienfuegos, where he is expected to arrive within the next day or two. London, May 14.- A dispatch from St. Thomas, Danish West Indies, says San Juan de Porto Rico surrendered at 6 o'clock in ihe evening. The dispatch adds that immense damase was done to the city and that a number of important buildings collapsed. The Iowa and Detroit, according to this dispatch, fired 430 shots with terrible effect. In conclusión, the dispatch says the Americans did not attempt to take possession of or destroy the town beyond razing the fortifications. New Yoik, May 16.- A special from Key West reports that in the fight at Cienfuegos Commander Washbuvn Maynard and Lieutenant Cameron M. Winslow, both of the gunboat Nashville, were slightly wounded. The dispatch adds that the Spanish loss is estimated at 400, and that of the United States fleet, four killed and four wounded. The lighthouse was demolished, it is reported, the arsenal destroyed and the batteries on shore silenced. The town was set on flre by shells from the American fleet.