This paper investigates the mythological wall paintings decorating the room known as the tablinum in atrium houses at Pompeii and Herculaneum. Scholars have considered the tablinum part of the “public” section of the house and have linked this room to the formal morning greeting, or salutatio, despite the fact that no ancient literary source mentions the tablinum in connection with this daily ritual. These assumptions have conditioned the way in which scholars have interpreted the decoration, which is analyzed in relation to the social activities supposedly associated with this type of room or discussed in terms of moral ideals and social values. This study demonstrates that the figurative imagery within the tablinum does not necessarily relate to social practices in that space but instead informs us about a common visual vocabulary shared by different strata of society.

During the excavations carried out since 2017 in the House of the Mithraeum (Casa del Mitreo) in Mérida a collection of paintings was recovered from Room 11, which had been abandoned in the late 3rd c. CE after a fire. The remains included fragments of molded stucco cornices, with braided esparto grass ropes on the reverse that were used to attach them to the ceiling. This article presents the descriptive and technical study of the finds and their compositional analysis using scanning electron microscopy and X-ray diffraction. Data resulting from these analyses allow us to understand the fragments’ composition and technical execution, and even the possible circulation of workshops and raw materials.