I.alternate (pure Lat. alternus); hence, amoebaeum carmen = ᾆσμαἀμοιβαῖον, a responsive song, Fest.; Serv. ad Verg. E. 3, 28, 59, 66 al.—Hence in metre, pes amoebaeus: “exduabuslongisettotidembrevibusetlongā,” Diom. p. 478 P. (e. g. īncrēdĭbĭlēs; opp. antamoebaeus, q. v.).