New photos added January 2004

Mesodon normalis (Pilsbry, 1900) - a large (to ~35 mm), ubiquitous species at the lower elevations. Endemic to the Appalachian Mountains.

Mesodon chilhoweensis (Lewis, 1870) - larger (to ~42 mm) and much 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.

Left. Vitrinizonites latissimus (Lewis, 1875) - an upland semi-slug endemic to the Smoky Mountains.
Right. Succinea ovalis Say, 1817 - a lowland species found in fields and along streams.

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

Left. Mesomphix rugeli (Binney, 1879) - a large zonitid found in wet lowlands and under logs.
Right. Haplotrema concavum (Say, 1821), right, devouring a Mesodon 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. Mesodon clarki also occurs only in the Smokies and is rather rare.

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