known only from a statement in Festus (45): catularia
porta Romae dicta est quia non longe ab ea ad placandam caniculae
sidus... rufae canes immolabantur
. Its size is quite uncertain, as well
as its purpose (CIL ip. p. 317; Gilb. i. 90-91
; Richter 385; WR 196);
and it certainly was not in the city wall.