(1) The record-office at Rome (see archives (Roman)), possibly serving the adjacent *aerarium (treasury) of Saturn and built according to CIL 12. 737 by Q. *Lutatius Catulus(1) in 78 bce, but not mentioned in literary sources. It is traditionally associated with the trapezoidal building lying between the two summits of the *Capitol with its main front towards the Campus Martius. On the opposite side, closing the west end of the *forum Romanum, the elevation consisted of a massive substructure of ashlar masonry with an arcade of eleven arches flanked by Doric half-columns above it. A second storey of Corinthian columns, now disappeared, was probably added in Flavian times. A stairway from the Forum climbed through the ground floor of the substructure to the front hall of the building. The first floor contained a service corridor, leading from the top of the porticus Deorum Consentium to two floors of eastern strong-rooms.