. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FIGURE 181 NUTTALL'S ANODON (ANODONTA NUTTAUANA) Description. Shell thin, no hinge teeth. Periostracum greenish brown. Inside of shell bluish. The hinge line extends upward to form a right triangle above the oval part of the shell. To three inches. Habitat. Slow-moving streams or lakes and ponds from Canada to Mexico. Notes. There are a number of species of this genus listed, but they are based on such minute differences that some aut
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FIGURE 181 NUTTALL'S ANODON (ANODONTA NUTTAUANA) Description. Shell thin, no hinge teeth. Periostracum greenish brown. Inside of shell bluish. The hinge line extends upward to form a right triangle above the oval part of the shell. To three inches. Habitat. Slow-moving streams or lakes and ponds from Canada to Mexico. Notes. There are a number of species of this genus listed, but they are based on such minute differences that some authorities consider them merely geographical forms of one species. ANGULAR ANODON (GON/DEA ANGULATA) Description. Shell thin, one rudimentary tooth on each valve. A ridge divides the shell into two unequal parts, indistinct in some specimens. Periostracum dark brown; inside of shell nacreous, flesh colored. Three to four inches. Habitat. Fresh-water streams and lakes from Canada to Mexico. REFERENCES Croker, R. E., A. F. Shira, H. W. Clark and A. D. Howard 1922. The natural history and propagation of fresh-water mussels. U. S. Bur. Fish., Bull, for 1919-1920, vol. 27, p. 75-181, 17 plates. Keep, Josiah 1935. West coast shells, revised by Joshua L. Baily, Jr. Stanford, Univ. Press, 350 p. Kung, George F. 1898. The fresh-water pearls and pearl fisheries of the United States. U. S. Fish. Comm., Bull, for 1897, vol. 17, p. 375-426, 22 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 California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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