Bacis
or PACIS, is only another name for the Egyptian Onuphis, the sacred bull, who was worshipped at Hermonthis in Upper Egypt, just as Apis was at Memphis. In size Bacis was required to excel all other bulls, his hair to be bristly, and his colour to change every day. (Macr. 1.21; Aelian, Ael. NA 12.11.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. 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.