Finally, he describes some languages as completely unique to one group of people; for example, that of the Argippaeans ([TEXT NOT REPRODUCIBLE IN ASCII.], 4.23.2), the Androphagi ([TEXT NOT REPRODUCIBLE IN ASCII.], 4.106.1) and the Trogodyte Ethiopians, who sound like bats ([TEXT NOT REPRODUCIBLE IN ASCII.], 4.183 .4).