Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 1-11

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 12-18

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 18-39

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 39-41

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 42-52

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 52-72

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 72-75

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 76-79

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 79-87

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 88-97

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 98-112

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 113-115

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 115-117

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 118-120

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 121-124

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 125-126

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 127-142

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 143-145

Published in South African journal of natural history, in 1920, in volume 2, issue 1, pages 145-146

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 147-159

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 160-179

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 180-194

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 195-208

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 209-215

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 215-229

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 230-240

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 240-252

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 253-258

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 258-277

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 277-279

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 280-285

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 285-288

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 288-293

Published in South African journal of natural history, in 1920, in volume 2, issue 2, pages 293-301