. Fresh-water rhizopods of North America. Rhizopoda; Freshwater animals. SUPi i "v'o \^ ^ ^M\ f M'^- t ^; 'VÂ¥'«! '^â i' *â¢â¬"*' 4 ^l. 1 â loa Leidy Tp) â *. 5<.T., PLACOCISTA SPINOSA ^. 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