We must now treat of the scenes in which Seileni and Satyrs, Maenads and Nymphs, appear independently of Dionysos, or in particular actions without relation to him. They are, indeed, often, if not invariably, present in all scenes in which he takes part, whether mythological or of a less definite character; as, for instance, the return of Hephaistos to Olympos,[714] in which the gods are usually accompanied by a more or less riotous escort of Satyrs, and others as already mentioned. The attack of the Satyrs on Iris and Hera has been alluded to in connection with the latter[715]; and they seldom elsewhere appear in relation to the Olympian deities or other myths, except in those scenes which depict the rising of Persephone or Ge-Pandora from the earth.[716] But Satyrs and Maenads are sometimes represented as performing sacrifices, not only to Dionysos,[717] but also to Herakles,[718] or to a terminal figure of Hermes.[719] We turn next to scenes of more general character. There are numerous vases, especially of the R.F. period, on which groups of Satyrs and Maenads are represented in revels of a more or less wild and unrestrained character, or else in more peaceful association. Those in which Dionysos himself is present have already been enumerated, but the general types may be now considered. It may, perhaps, be possible to distinguish two, or even three, classes of this subject: the inactive groups of Satyrs and Maenads[720]; those in which they rush along in frenzy and unrestrained licence, brandishing their thyrsi, or with tambourines (_tympana_) and other musical instruments[721]; and, lastly, scenes of convivial revelry (κῶμοι), in which they are engaged in drinking from all sorts of vessels.[722] Sometimes these revels are strictly confined to Satyrs, and then they become absolutely licentious in character[723]; or, again, a group of Maenads unattended tear along with torches, thyrsi, and musical instruments[724]; or, lastly, both join in dances hand-in-hand, a subject which on early vases is often adopted for a long frieze encircling a vase.[725]