Original Combination:

zaleta = advantage (polish)

Original Description:

Animal. Greyish-brown or blackish above, paler on ther posterior extremity and base; superior tentaculae black, long and slender; glands very prominent, length, when fully extended, including the tentaculae, equal to thrice the breadth of the shell.
Shell. Convex, somewhat ventricose: epidermis, of a uniform yellowish horn or russet-color: whorls, between five and six, with fine, parrallel striae crossing them obliquely: body whorl large and ventricose: suture, well marked, and distinct: aperture, rounded, contracted by the lip, the plane of the aperture making a considerable angle with the plane of the base; lip white, reflected: pillar lip, with a priminent, white, oblique tooth: umbilicus covered.
Greatest transverse diameter about one inch.
Geographica Distribution. Common in the States bordering on the Ohio river, and in the western parts of Virginia and Pennsylvania. I have never noticed it in New England nor in the States east of the Alleghany mountains.