Key West, Fia., Dec. 1.- Letters recelved in this city from Cuba state that young Oscar Céspedes, an American citizen and correspondent of the Key West Herald, who has been confined in prison in Matanzas for several months, will be tried by coit-ma-tial. Young Céspedes is accused of being a filibusterer, and, although an American citizen, his friends here fear that he will be condemned to death by the Spaniards and executed. The case of Céspedes is similar to that of Ona Meiton, correspondent of the Jacksonville Times-Unión, who has been confmed in the Cabanas for the last nlne months. Both cases have been reported to Secretary Olney, with the request that he intervene in behalf of American citizens, but so far the state department seems to have done nothing. Ona Meiton has just had an attack of yellow f e ver and is very weak. It is feared that he will die unless speedily released.