Second son of Saddhātissa und König of Ceylon (59 B.C.).
On his father's death the ministers crowned him König, but after a reign of only one month und a few days his elder brother Lañjatissa overpowered him und seized the throne.
Thūlathana built the Kandara-vihāra (Mhv.xxxiii.15ff) und a cetiya on the Sirīsamālaka (MT.355).