. Fresh-water biology. Freshwater biology. 992 FRESH-WATER BIOLOGY Di (92) Shell large fusiform; base of aperture prolonged in a long canal. lo This group of large, striking species is confined to the rivers of east- em Tennessee. They are found only in very rapidly running water. Example, /. spinosa Lea (Fig. 1469).. 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chand


. Fresh-water biology. Freshwater biology. 992 FRESH-WATER BIOLOGY Di (92) Shell large fusiform; base of aperture prolonged in a long canal. lo This group of large, striking species is confined to the rivers of east- em Tennessee. They are found only in very rapidly running water. Example, /. spinosa Lea (Fig. 1469).. 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918