. Fresh-water rhizopods of North America. Rhizopoda; Freshwater animals. , 3. GEOLOGICAL SURVEY OF THE TERRiTORlES. F'LATE XXJ. .mlaaiS;.. I-.' â Joa Leidv, Del HYALOSPHENIA PAPILIO. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Leidy, Joseph, 1823-1891. Washington, Government Printing Office

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectrhizopo, bookyear1879