Published in Mémoires Société entomologique de Belgique, in 1908, in volume 15, pages 18-86

Published in Bruxelles Memoires de la Societe Entomologie Belgique, in 1908, in volume 15, pages 227-236

Published in Bruxelles Memoires de la Societe Entomologie Belgique, in 1908, in volume 16, pages 127-186