. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. Bull. U. S. B. F., 1917-18. Plate Upper pair: Ohio River piR-toe, QuadruJa nhliiiun (Lamarck), (rora Oliio River. (See p. 25.) Lower pair; Pig-toe, Quadrula undata (Barnes), from Illinois River. (See p. =4.). 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 United States. Bureau of Fisheries. Washington, D. C. : Govt. Print. Off.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfisheries, bookyear19