Stenotrema sp. cf. S. magnifumosum (Pilsbry, 1900) cf. Appalachian Slitmouth

Stenotrema sp. cf. S. magnifumosum (Pilsbry, 1900) cf. Appalachian SlitmouthStenotrema sp. cf. S. magnifumosum (Pilsbry, 1900) cf. Appalachian Slitmouth

Stenotrema sp. cf. S. magnifumosum (Pilsbry, 1900) cf. Appalachian SlitmouthStenotrema sp. cf. S. magnifumosum (Pilsbry, 1900) cf. Appalachian Slitmouth
    Camp's Gulf, Van Buren County, Tennessee; Bob Winters! 11/3/2018 (9.1 mm.). Shells of this large, uniform sample resemble the specimen identified as S. stenotrema from Hamilton [Marion Co., NW], AL by Pilsbry (1940: 658, figs. b). In contrast to S. magnifumosum they have a strong buttress, looser coiling, a more inflexed lateral end of the parietal tooth , a shorter fulcrum, and more convex base . The shells are more plump, the basal notch deeper, and the interdenticular sinus more excavated than in S. stenotrema. Further, they have a broader, shallower interdenticular sinus, less deeply inflexed parietal tooth, much shorter fulcrum, stronger buttress, and less convex base than S. turbinella.
Pilsbry, H.A., 1940. Land Mollusca of North America (north of Mexico) vol. 1 part 2. Academy of Natural Sciences, Philadelphia. vi + 575-994 + ix. 1 Aug. <http://babel.hathitrust.org/cgi/pt?id=uc1.31822000620245;view=1up;seq=7>

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