specimens): TU 5989, Ouachita River, Monroe, Ouachita Par., Louisiana; TU 7543, Vacherie, St. James Par., Louisiana; CNHM 7845, Gayles, Caddo Par., Louisiana; USNM 92605, Greenville, Washington Co., Mississippi; USNM 113228, Jonesville, Catahoula Par., Louisiana; USNM 118167, Wheeler Reservoir, Tennessee River, Alabama.

Records in the Literature.—USNM 113228, referred to above as Trionyx m. muticus is listed by Stejneger (1944:56) as Amyda s. spinifera; four of the specimens listed above (USNM 7655, 92605, 95133-34) are recorded by Stejneger (op. cit.:23-34) as Amyda mutica. Cook (1946:185) records seven specimens of the muticus group from Mississippi as follows: 1, no data; 1, Vicksburg, Warren Co.; 3, Forrest Co.; 1, Crawford Bridge, Jones Co.; 1, Lake Park, Columbus, Lowndes Co. I have not seen these specimens; they are plotted on the distribution map—the one from Vicksburg as muticus and the others as calvatus on geographic grounds. The hatchlings of Trionyx muticus referred to by Anderson (loc. cit.) include the nine paratypes from Varnado, Louisiana.

PLATE 13

Trionyx muticus calvatus new subspecies, hatchling, UI 31071, holotype (× 1.3). Top, dorsal view. Bottom, ventral view, Photographs by John M. Legler.

PLATE 14

Trionyx muticus calvatus new subspecies, hatchling male, TU 17301, paratype (× 1.3). Top, dorsal view. Bottom, lateral view of left side. Photographs by Isabelle Hunt Conant.

LITERATURE CITED

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, 26 pls., 38 maps, July.

1958. A field guide to reptiles and amphibians of eastern North America. Houghton Mifflin Co., Boston, pp. vii+366, 40 pls., 62 figs., 248 maps.

Conant, R., and C. J. Goin.

1948. A new subspecies of soft-shelled turtle from the central United States, with comments on the application of the name Amyda. Occas. Pap. Mus. Zool., Univ. Michigan, 510:1-19, 2 pls.,