Ancilla to the Pre-Socratic Philosophers: 54. Prôrus of Cyrene, Amŷclas, Cleinias of Tarentum 54. PRÔRUS OF CYRENE, AMŶCLAS, CLEINIAS OF TARENTUM Prôrus of Cyrene, Amŷclas, Cleinias of Tarentum. Latter-day Pythagoreans; forged writings in the name of Prôrus and Cleinias were in circulation in later times, but no genuine writings survive.