Lewis & Short

urnālis, e, adj. [urna, II. D.], containing an urn, holding half an amphora: urcei, Cato, R. R. 13, 3: caliculi, Trebius Niger ap. Plin. 9, 30, 48, § 93.
Plur. subst.: urnālĭa, ĭum, n., vessels of such capacity, Dig. 33, 6, 16.