BY ROBERT G. WEBB University of Kansas Lawrence 1959 University of Kansas Publications, Museum of Natural History Editors: E. Raymond Hall, Chairman, Henry S. Fitch, Robert W. Wilson Volume 11, No. 9, pp. 517-525, 2 pls., 1 Fig. Published August 14, 1959 University of Kansas Lawrence, Kansas PRINTED IN THE STATE PRINTING PLANT TOPEKA, KANSAS 1959 27-8360 BY ROBERT G. WEBB Examination of softshell turtles allied to Trionyx muticus from the southeastern United States discloses the presence of an u

Amyda mutica (in part), Stejneger, Bull. Mus. Comp. Zool., 94(1):23-24, 1944. Amyda muticus (in part), Cook, Jour. Mississippi Acad. Sci., 1941-1947, p. 185, 1946. Trionyx muticus Anderson, Copeia, 3:211, August 28, 1958. Holotype. —UI 31071, hatchling, sex undetermined, from the Pearl River, Roses Bluff, 14 miles northeast Jackson, Rankin County, Mississippi; obtained by William F. Childers on August 25, 1952 (Plate 1). Paratypes. —A total of 20 alcoholic specimens: TU 17301, hatchling male (Pl

Anderson, P. K. 1958. The photic responses and water-approach behavior of hatchling turtles. Copeia, 1958, 3:211-215, 5 figs., August 28. Agassiz, L. 1857. Contributions to the natural history of the United States. Vol. II, Part III. Embryology of the turtle. Little, Brown and Co., Boston, pp. 451-643, 27 pls. Cahn, A. 1937. The turtles of Illinois. Illinois Biol. Monogr., 16(1-2):1-218, 31 pls., 15 figs., 20 maps, August 31. Conant, R. 1938. The reptiles of Ohio. Amer. Midl. Nat., 20(1):1-200,