This name was applied to collectors of various sorts,
e. g. to the servants of the publicani or farmers of the taxes, who
collected the revenues for them (Cic.
pro Rab. Post. 11
, § 30); also to
those who collected the money from the purchasers of things sold at a public
auction (Id. pro Cluent.
64.180). The father of
Horace was a coactor,
but there are no means
for determining to which class he belonged. (Hor. Sat.
1.6, 86; Suet. Vit. Hor.