Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 83, pages 85-178
Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 83, pages 141-143
Published in Archiv für Naturgeschichte, in 1919, in volume 83, issue 11, pages 95-122
Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 85, pages 243-276