Victoria University of Wellington Library
Title: A Guide to the Freshwater Mollusca of New Zealand
Author: M. J. Winterbourn
In: Tuatara: Volume 20, Issue 3, November 1973
Publication details: Wellington
Part of: Tuatara : Journal of the Biological Society
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Plate 4: Figures 26–28: Physastra variabilis. Figure 29: Physa sp., latero-ventral view of animal showing digitate mantle margin. Figure 30: Physa sp. Figure 31: Lymnaea stagnalis. Figure 32: Lymnaea columella. Figure 33: Lymnaea truncatula. Figures 34, 35: Lymnaea tomentosa.