Researches in American oligochaeta, with especial reference to those of the Pacific coast and adjacent islandsPublished in Proceedings of the California Academy of Sciences, in 1900, in volume 2, pages 85-268Studies in Pacific Coast EntoproctaPublished in Proceedings of The California Academy of Sciences, in 1900, in volume 2, pages 323-348
Studies in Pacific Coast EntoproctaPublished in Proceedings of The California Academy of Sciences, in 1900, in volume 2, pages 323-348