(Itin. Ant. p. 171; Thaubasteum, Not. Imp.), was a frontier town of Lower Aegypt, situated on the Canopic arm of the Nile, about 8 miles N. of Serapeium and the Natron Lakes. In Roman times Thaubasium was the head-quarters of a company of light auxiliary troops “II Ala Ulpia Afrorum.” (Orelli, Inscript.
It is supposed to be at the modern Cheych-el-Nedy.
vol. ii. p. 71.)