Published in Revue Suisse De Zoologie, in 1927, in volume 34, pages 1-52

Published in Revue Suisse De Zoologie, in 1927, in volume 34, pages 55-67

Published in Revue Suisse De Zoologie, in 1927, in volume 34, pages 405-475

Published in Revue Suisse De Zoologie, in 1927, in volume 34, pages 477-498

Published in Revue Suisse De Zoologie, in 1927, in volume 34, pages 499-581

Published in Revue suisse de zoologie, in 1927, in volume 34, issue 4, pages 119-125