φυλοβασιλεύς

έως, ὁ
A. a βασιλεύς chosen from each φυλή to perform sacrifices, Hesperia 4.21 (Athens, iv B. C.), Arist. Ath. 8.3, al., IG 22.1357, Poll. 8.111,120, Hsch.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project