. Fresh-water rhizopods of North America. Rhizopoda; Freshwater animals. IIS GEOLOGICAL"SURVEY OF THE TERRITORIES. PLATE Xin. ^ Jcd ]. DIFFLUGIA ACUMINATA. :7iOB Sir,^l(.ir A Sop. Lit. 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