εὖ γ᾽ εὖ γε ποιήσαντες ὦ Διοσκόρω → well done, well done, you twin Dioscuri!
ŏpercŭlo: āvi, ātum, 1, v. a. operculum,I to furnish or cover with a lid, to cover (post-Aug.): dolia, Col. 12, 30, 1: vasa, id. 12, 15, 2: operculati favi, id. 11, 2, 50; 57.