Apalachina chilhoweensis (Lewis, 1870) - larger (to ~42 mm) and rarer than M. normalis. Several populations have been found in lowland areas. It is the largest North American land snail found east of the Rocky Mountains. Endemic to the Appalachian Mountains.

Apalachina chilhoweensis (Lewis, 1870)

Vitrinizonites latissimus (Lewis, 1875) - an upland semi-slug endemic to the Smoky Mountains.

Patera perigrapta (Pilsbry, 1894) - a fairly common lowland snail, often found climbing trees.

Mesomphix rugeli (Binney, 1879) - a large zonitid found in wet lowlands and under logs.

Haplotrema concavum (Say, 1821), right, devouring a Patera clarki (Lea, 1858). Haplotremas are predatory on other snails. Only two species occur east of the Rocky Mountains, Haplotrema concavum and Haplotrema kendeighi Webb, 1951. Concavum is widely distributed but kendeighi occurs only in the Smoky Mountains. Patera clarki also occurs only in the Smokies and is rather rare.

Philomycus carolinianus (Bosc, 1802) - a large (to 100mm), common slug throughout the Appalachian Mountains, climbing trees in wet weather.

Ventridens acerra (Lewis, 1870) - one of a dozen Ventridens species recorded from the Park.

Mesomphix andrewsae (Pilsbry, 1895) - a common snail in moist leaf litter and under logs.