Note 3 — APPENDIX C.
Reading edition
Not content with the indication afforded by the identity of the two terminal syllables in each name, C. Müller conjectures that the ancient name of the promontory near Agadir was Râs adir, Râs being the common Arabic designation for a headland. He apparently supposes that the natives spoke Arabic in the time of Polybius. Even now none of the headlands on this coast have the designation Râs.