Erannaboas
Ἐρανναβόας
Erannaboas (Ἐρανναβόας, Arrian, Ind. 4; Plin. Nat. 6.18. s. 22), a river which flowed into the Ganges at Palimbothra (Patna). There has been much discussion as to what river is indicated by this name. It seems, however, most likely that it is the same as the Sonus (Soane), though Arrian and Pliny both speak of two rivers which they call respectively Erannoboas and Sonus. The name is derived from the Sanscrit Hyranyaváhas, the poetical title of the Sonus. (See Ritter, Erdkunde, v, p. 508; Rennell, Mem. in Hindostan, p. 50.) It is clear, from the context, that Strabo knew of the existence of this river (xv. p. 702), though he does not mention its name.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.