Published in Proceedings of the California Academy of Sciences, in 1876, in volume 7, pages 55-57

Published in Proceedings of the California Academy of Sciences, in 1876, in volume 7, pages 94-108

Published in Proceedings of the California Academy of Sciences, in 1876, in volume 7, pages 108-110

Published in Proceedings of the California Academy of Science, in 1876, in volume 7, pages 145-156