The evidence for Assyrians in Babylonia during the Chaldean and Achaemenian periods. is presented in section II below. This evidence consists mainly of onomastic material which is thoroughly analyzed. The prosopography of the Assyrians consists of 116 individuals who lived in Babylonia between 626/5 and 404/3 (or 349/8) B.C. The analysis of the onomastic material is also of linguistic interest as it reveals that several Assyrian dialectal features were still current after the fall of the Assyrian empire.