The earlier references allude to Trogodytes, evidently derived from Greek trōglē, cave and dytes, divers.
In Herodotus
Herodotus referred to the Troglodytae in his Histories as being a people hunted by the Garamantes. He said that the Troglodytae were the swiftest runners of all humans known and that they ate snakes, lizards, and other reptiles. He also stated that their language was unlike any known to him, and sounded like the screeching of bats. Alice Werner believed that this was a clear allusion to the early Khoisan, indigenous inhabitants of Southern Africa, because their languages contain distinctiveclick sounds.
In his work Chorographia, Pomponius Mela mentions that they own no resources, and rather than speak, they make a high-pitched sound. They creep around deep in caves and are nurtured by serpents.
In his work Deipnosophists, Athenaeus wrote that Pythagoras who wrote about the Red Sea mentioned that they make their pandura out of the white mangrove which grows in the sea and that Euphorion in his book on the Isthmian Games mentioned that they played sambucas with four strings like the Parthians.
In Claudius Aelianus
In his work On the Characteristics of Animals, Claudius Aelianus mentions that the tribe of Troglodytae are famous and derive their name from their manner of living. He also adds that they eat snakes. Furthermore, he wrote that Troglodytes believe that the king of the beasts is the Ethiopian Bull, because it possesses the courage of a lion, the speed of a horse, the strength of a bull, and is stronger than iron.
In Josephus
Flavius Josephus alludes to a place he calls Troglodytis while discussing the account in Genesis, that after the death of Sarah, Abraham married Keturah and fathered six sons who in turn fathered many more. "Now, for all these sons and grandsons, Abraham contrived to settle them in colonies; and they took possession of Troglodytis, and the country of Arabia Felix..." The Troglodytis Josephus refers to here is generally taken to mean both coasts of the Red Sea. However, Josephus goes on to state that the descendants of one of these grandsons, Epher, invaded Libya, and that the name of Africa was thus derived from that of Epher. The dominant modern hypothesis is that Africa stems from the Berber word ifri, meaning "cave", in reference to cave dwellers.