Aegipan from the Nurenburg Chronicle, 1493

THE SATYROI & AIGIPANES LIBYES were tribes of Satyr- and Pan-like men or beasts believed to inhabit the Atlas mountains in North-West Africa.

They were closely related to the Satyroi Nesioi. The Ethiopian Satyr encountered by Philostratus was probably also of the same breed.

The African satyrs were probably derived from travellers accounts of monkeys and baboons. The aegipans were a fanciful extension of this.

Pliny the Elder, Natural History 6. 197 (trans. Rackham) (Roman encyclopedia C1st A.D.) :
"Rising from the sea at the middle of the coast [of the Atlantic coast of Aithiopia] is a mountain of great height which glows with eternal fires--its Greek name is the Chariot of the Gods; and four days’ voyage from it is the cape called the Horn of the West, on the confine of Africa, adjacent to the Western Aethiopes. Some authorities also report hills of moderate height in this region, clad with agreeable shady thickets and belonging to Aegipanes and Satyri."

Sources:

• Pliny the Elder, Natural History - Latin Natural History C1st A.D.