Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 5-13

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 14-52

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 53-64

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 65-138

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 139-144

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 145-173

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 174-198

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 199-204

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 205-209

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 210-214

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 215-216

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 217-219

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 220-222

Published in South African journal of natural history, in 1921, in volume 3, issue 1, pages 223