Ab urbe condita

Then a heifer of conspicuous beauty was taken from the herd, and the first sacrifice was offered; the Potitii and Pinarii, the two principal families in those parts, were invited by Hercules to assist in the sacrifice and at the feast which followed.

It so happened that the Potitii were present at the appointed time and the entrails were placed before them; the Pinarii arrived after these were consumed and came in for the rest of the banquet.

It became a permanent institution from that time that as long as the family of the Pinarii survived they should not eat of the entrails of the victims. The Potitii, after being instructed by Evander, presided over that rite for many ages, until they handed over this ministerial office to public servants after which the whole race of the Potitii perished.