וּבְנֵ֥י מְרָרִ֖י מַחְלִ֣י וּמוּשִׁ֑י אֵ֛לֶּה מִשְׁפְּחֹ֥ת הַלֵּוִ֖י לְתֹלְדֹתָֽם׃
And the sons of Merari: Mahli and Mushi. These are the families of the Levites according to their generations.
Targum Jonathan on Exodus
And the sons of Merari, Mahali and Mushi; these are the race of Levi according to the generations.