. Abhandlungen herausgegeben vom Naturwissenschaftlichen Verein zu Bremen. Natural history; Natural history. 229. 1. Hydrachna globosa (de Geer) Duges. Männlicher Ge- schlechtshof. v = Ge- schlechtsöffnung. Vergr. 71 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 Naturwissenschaftlicher Verein zu Bremen. Bremen : Im Selbstverlag des Naturwissenschaftlichen Vereins

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Keywords: ., booka, bookcentury1800, bookdecade1860, booksubjectnaturalhistory