Back in July 2010 when we were in Turkey, we spent one afternoon visiting the ruins of an Ottoman fort in the village of Rumelifeneri at the entrance of the Bosphorus from the Black Sea.
The main purpose of our trip to the site was, of course, to collect land snails. The paper presenting the results of our little survey just came out in Triton. You may download a pdf version of it from here.
The snail fauna of the location was impoverished in terms of the number of species, although the shells of the existing snails were abundant. The most noteworthy find was the 2nd ever record of Discus rotundatus from Turkey.