1893-1895 2 parts (complete). 42, 70 p., 6, 5 lithographed pls, 4to, disbound (no covers). Published in: Denkschriften der Mathematisch-Naturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissenschaften. Good, very clean copy.Interesting account of the fossil freshwater molluscs (Nerita, Unio, Melania, Hydrobia etc.) from Rhodos, Greece, with descriptions of numerous new species.