Keywords: Valvata macrostoma.png en Valvata macrostoma; Freshwater prosobranch snail Ehrmann P 1956 Mollusca reprinted from 1933 edition Ehrmann Hermann Felix Paul 21st December 1868 “ 6th October 1937; Germany 1933 scanned dd 2010-04-05 by User Tom Meijer and retouched from Ehrmann P 1956 Mollusca 264 pp reprint Valvatidae PD-old |