Registry of Slave Prizes.—Messrs. Hallett, Robinson Co. have given notice of the registry of the slaver Uncas, Feb. 22, captured by the Ferret, Captain Oake, Feb. 21, 1845 ; of the Brazilian barque Princeza, Feb. 22, captured by the Lily, Commander Baker, Nov 17, 1845; of the Africano, Feb. 22, captured by the Hydra, steam-sloop, Captain Young, July 30, 1845. Messrs. W. E. Chard have given notice of the registry of the slaver brig, Alabes, captured by the Cygnet, Captain Layton.