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.

These are closely allied species, in which the internal organization is in many cases more distinctive than the external aspect of the shell.

Distribution
These species occur in North America, Greenland, Europe and northern Asia.

Species
Species with the genus Vitrina include:
 * Vitrina angelicae Beck, 1837
 * Vitrina baudoni Delaunay, 1877
 * Vitrina exilis Morelet, 1858
 * † Vitrina kubanica Volkova, 1953
 * † Vitrina ludovici Depéret, 1895
 * † Vitrina obesa H.-Z. Pan, 1977
 * † Vitrina obliqua H.-Z. Pan, 1977 (accepted > unreplaced junior homonym)
 * Vitrina pellucida (Müller, 1774)
 * † Vitrina puncticulata F. Sandberger, 1872
 * Vitrina rugulosa E. von Martens, 1874
 * † Vitrina splendida C. Koch, 1880
 * Vitrina tenella A. Gould, 1852
 * † Vitrina turonica Collot, 1911
 * Synonyms:
 * † Vitrina suevica Sandberger, 1872 : synonym of † Phenacolimax suevica (F. Sandberger, 1872) (superseded combination)
 * Taxa inquirenda:
 * Vitrina amoena Morelet, 1884
 * Vitrina angolensis Morelet, 1867
 * Vitrina bozasi de Rochebrune & Germain, 1904
 * Vitrina compacta Preston, 1912
 * Vitrina josephinae Emberton & Griffiths, 2009 (generic affinity uncertain)
 * Vitrina madagascariensis E. A. Smith, 1882
 * Vitrina marojeziana Fischer-Piette, Blanc, C.P., Blanc, F. & Salvat, 1994
 * Vitrina ugandensis Thiele, 1911