7. P.Septimius, the quaestor of M. Terentius Varro, who sent to him three books De Lingua Latina (Varr. L. L. 5.1, 7.109, ed. Müller). He is probably the same as the P. Septimius, who wrote two books on architecture, as his name is mentioned by Vitruvius in conjunction with Varro's. (Vitruv. vii. Praef. p. 194, ed. Bip.)