Published in Annales de la Societe Entomologique de Belgique, in 1906, in volume 49, pages 218-334
Published in Annales De La Société Entomologique De Belgique, in 1906, in volume 49, pages 368-378
Published in Annales de la Societe entomologique de Belgique. Bruxelles, in 1906, in volume 50, pages 12-13
Published in Annales de la Société entomologique de Belgique, in 1906, in volume 50, pages 97-100
Published in Annales de la Société Entomologique de Belgique, in 1906, in volume 50, pages 106-121
Published in Annales De La Societe Entomologique De Belgique, in 1906, in volume 50, pages 130-134
Published in Annales de la Société Entomologique de Belgique, in 1906, in volume 50, pages 137-144
Published in Annales De La Société Entomologique De Belgique, in 1906, in volume 50, pages 148-154
Published in Ann. Soc. Entomol. Belg., in 1906, in volume 50, pages 196-203
Published in Annales de la Société Entomologique de Belgique, in 1906, in volume 50, pages 204-214
Published in Ann. Soc. Entomol. Belg., in 1906, in volume 50, pages 254-270
Published in Ann. Soc. ent. Belg., in 1906, in volume 50, pages 284-308
Published in Annales de la Societe entomologique de Belgique. Bruxelles, in 1906, in volume 50, pages 395-404
Published in Annales de la Société Entomologique de Belgique, in 1906, in volume 50, pages 405-417