Published in Revue suisse de zoologie, in 1931, in volume 38, issue 8, pages 113-115

Published in Revue Suisse de Zoologie, in 1931, in volume 38, issue 2, pages 31-62

Published in Revue Suisse De Zoologie, in 1931, in volume 38, issue 3, pages 63-66

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 289-308

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 401-403

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 405-418

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 419-427

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 449-467

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 469-555

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 1-30

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 429-444

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 445-448

Published in Revue Suisse De Zoologie, in 1931, in volume 38, pages 187-285