VICUS SULPICIUS
a street on which the baths of Caracalla were said to be situated (Hist. Aug. Elag. 17: opera eius praeter... et lavacrum in vico Sulpicio quod Antoninus Severi filius coeperat nulla extant; cf. the republican inscription on a round altar, CIL i'. 1002=vi. 2221:magistri de duobus pageis et vicei Sulpicei; cf. 32452). It must therefore have extended along one side of the baths. On the Capitoline Base (CIL vi. 975) in Region I are mentioned a vicus Sulpicius ulterior and a vicus Sulpicius citerior, which would seem to indicate that by the fourth century at least the street was divided. As the baths were in Region XII, the most probable location of the vicus Sulpicius is on their southern side, for the most part inside Region I. The vicus may have formed part of the boundary between I and XII. If the vicus crossed the via Appia, ulterior and citerior may have indicated its two sections (HJ 196, 207-209; KH ii.; for another location of this vicus, cf. LA 268).1