. Fresh-water biology. Freshwater biology. I'lG. 1522. 161 (162) Male and female shells different, that of the latter being slightly swollen behind the middle of the base. Shell rather small, elongated, dorsal slope plicately or nodulously wrinkled; hinge complete. Marsupium occupying the central portion of the outer gill Medionidus Simpson. A small group of species characterized by their elongate shape and plicate dorsal slope. It is restricted to the waters of Tennessee, Alabama, Georgia, and Florida. Type, M. conradicus Lea (Fig. 1523).. Fig. Please note that these images are extract
. Fresh-water biology. Freshwater biology. I'lG. 1522. 161 (162) Male and female shells different, that of the latter being slightly swollen behind the middle of the base. Shell rather small, elongated, dorsal slope plicately or nodulously wrinkled; hinge complete. Marsupium occupying the central portion of the outer gill Medionidus Simpson. A small group of species characterized by their elongate shape and plicate dorsal slope. It is restricted to the waters of Tennessee, Alabama, Georgia, and Florida. Type, M. conradicus Lea (Fig. 1523).. Fig. 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
