 Diogenes Laertius reports, evidently on the authority of Aristoxenus, that the last Pythagoreans were Xenophilus from the Thracian Chalcidice (Aristoxenus’ teacher), and four Pythagoreans from Phlius: Phanton, Echecrates, Diocles and Polymnastus. These Pythagoreans are further identified as the pupils of Philolaus and Eurytus. Little more is known of Xenophilus beyond his living for more than 105 years (DK I 442–443). The Pythagoreans from Phlius are just names except Echecrates (DK I 443), to whom Phaedo narrates, evidently in Phlius, the events of Socrates’ last day in Plato’s Phaedo. Socrates’ interlocutors in the Phaedo, Simmias and Cebes, are often regarded as Pythagoreans, because they are said to have been pupils of Philolaus when he was in Thebes. They are also shown to be pupils of Socrates, however, and it is unclear that their connection to Philolaus was any closer than their connection to Socrates. They are not listed in Iamblichus’ catalogue as Pythagoreans; Diogenes Laertius includes them with other followers of Socrates (II 124–125). Echecrates might have been born around 420 and thus be a young man at the dramatic date of the Phaedo. Aristoxenus’ assertion that these were the last of the Pythagoreans would then suggest that Pythagoreanism died out around 350, when Echecrates was an old man.