Vitrina

Vitrina is genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Vitrinidae, the glass snails.

==Description== The shell is globular. There is no apertural membrane. The mantle lobe is very small. There is no penial appendix, no vagina, which means that penis, oviduct and spermatheca duct join at a common point.