Keywords: PolygyraCereolusExBnny38.jpg the land snail Polygyra cereolus Binney William G 1878 The Terrestrial Air-Breathing Mollusks of the United States and Adjacent Territories of North America Vol 5 plates Bull Mus Comparative Zool Harvard Plate 38 original 1878; scan 2007 William Greene Binney 1833-1909; U S A scanned by Tim Ross PD-old-80 Polygyra cereolus |