. Bulletin biologique de la France et de la Belgique. Biology; Natural history. Via. 2.— Thyca afellasfo-is, face ventrale (d'après Kœhler et \anky).. Fig. 3. — Thyca ccto- concha (d'après P. et F. S.\rasin).. 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 Université de Paris. Laboratoire d'evolution des êtres organisés. Montreuil [etc. ] Gauther-Villars [etc. ]

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Keywords: ., bookcentury1800, booksubjectbiology, booksubjectnaturalhistory