1924-1953 Eleven volumes bound in five. 201, [1], 208, 205, 204, 189, 212, 268, 183, 180, 248, 135 p., 108, 70, 70, 211, 210, 200, 84, 70, 65, 20, 46 figures, 4, 6 (1 coloured), 4, 3 plates, later half cloth with title in gilt on spine (original printed covers bound in). Library stamps, else very good, rare set.As far as I know this was all that was published in the series B. Diptera. A series with collections of smaller papers reunited in each volume. The main series (Serie A) was simultaneously published and consists of larger monographs.