. Über die Bastarde von Helix Hortensis Müller und Helix Nemoralis L. : eine Untersuchung zur experimentellen Vererbungslehre. Gastropoda; Helix hortensis; Cepaea nemoralis. 2 6 Cf I .i. 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lang, Arnold, 1855-1914. Jena : Gustav Fischer

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