Published in Annals of The South African Museum, in 1920, in volume 14, pages 403-578

Published in Annals of the South African Museum, in 1920, in volume 17, pages 273-318

Published in Annals of the South African Museum, in 1920, in volume 17, pages 319-438

Published in Ann. S. Afric. Mus., in 1920, in volume 17, pages 439-488

Published in Annals of The South African Museum, in 1920, in volume 17, pages 489-497

Published in Annals of the South African Museum, in 1920, in volume 17, pages 499-505

Published in Annals of the South African Museum, in 1920, in volume 17, pages 507-521

Published in Ann. S. Afr. Mus, in 1920, in volume 17, pages 527-530

Published in Annals of the South African Museum, in 1920, in volume 17, issue 4, pages 231-272