personal names: Callistratus rather than Kallistratos
Phædo rather than Phaidōn
Crito rather than Kritōn, &c.

place names: Syracuse rather than Suracousai
Athens rather than Athēnai,
Cyrene rather than Kurēnē, but

Halikarnassos rather than Halicarnassus
Taras rather than Tarentum,
Akragas rather than Acragas or Agrigento, &c.