Note 123 — Chapter II · LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMY
Reading edition
Journ. of Conch. iii. p. 277; compare W. M. Webb, Zoologist, 1893, p. 281.
Reading edition
Journ. of Conch. iii. p. 277; compare W. M. Webb, Zoologist, 1893, p. 281.