Published in Proceedings of the California Academy of Sciences, in 1928, in volume 16, pages 681-684

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 16, pages 685-688

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 16, pages 689-698

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 16, pages 699-758

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 1-29

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 31-63

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 67-87

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 89-139

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 141-185

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 187-203

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 205-246

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 247-251

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 253-265

Published in Proceedings of the California Academy of Sciences, in 1928, in volume 17, pages 267-295