Published in Entomologische Rundschau, in 1920, in volume 37, pages 1-2

Published in Entomologische Rundschau, in 1920, in volume 37, pages 18-19

Published in Entomologische Rundschau, in 1920, in volume 37, pages 21-22

Published in Entomologische Rundschau, in 1920, in volume 37, pages 22-23