Published in Revue Suisse De Zoologie, in 1923, in volume 30, pages 161-212

Published in Revue Suisse De Zoologie, in 1923, in volume 30, pages 245-273

Published in Revue Suisse de Zoologie, in 1923, in volume 30, pages 337-352

Published in Revue Suisse de Zoologie, in 1923, in volume 30, issue 3, pages 87-102