The Cambridge natural history, Vol. 03 (of 10)Note 67 — Chapter II · LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMYReading editionZoologist, 1861, p. 7400; Brit. Conch. i. p. 108.◇Copy noteReturn to CHAPTER II LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMY