COSSINI(Κόσσινοι). According to a fragment of Artemidorus, cited by Stephanus (s. v. Ὠστίωνες), the Ostiones were a people on the Western Ocean, who were also called Cossini by Artemidorus, but Ostiaei by Pytheas. It seems probable, that these Ostiones or Ostiaei are the Osismii of Caesar. ( B. G. 2.34.) Walckenaer, who is ingenious on such obscure names, does not admit that these Cossini are the same as the Ostiaei, but he assumes them to be a neighbouring tribe at the western extremity of Bretagne. There is a place Coesnouor Coueznounear Brest.
[G.L]