. Die Descendenztheorie; . Fig. 83. Entwicklun gsreihe vonVivi- para. Nacb Neumayr. a V. Neumayri, 6 V. Suessi, c V. bifarcinata, d V. stricturata, e V. notha, f V. oruata, g V. Hoernesi. l) Kiele sind spiralig an der Schale hinziehende Wtilste.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectevoluti, bookyear1901