<p>This tomb structure lay N of the *”Via Labicana-Praenestina” and W of the Porta Maggiore, between Via Giolitti and Via di Porta Maggiore (shown on Lanciani, <i>FUR</i> pl. 31); it consisted of three rooms in <i>opus reticulatum</i> with a vaulted stuccoed roof (Mancioli). These walls are dated to the Augustan period (Van Deman). Discovered in 1733 and demolished <i>c</i>. 1900, its ground-plan is known from various 18th-c. drawings. An inscription over the entrance drawn by Piranesi records that it was constructed by L. Arruntius (<i>cos</i>. A.D. 6) to house the funerary urns of his dependents and descendants (<i>CIL</i> VI 5931). It is reasonable to assume that this complex was built, or at least begun, before A.D. 14.</p>