Vitrea crystallina

Crystal snail External image
File:TaylorMonographHyalina.jpg
Vitrea crystallina Figure 3
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra clade limacoid clade
Superfamily:	Gastrodontoidea
Family:	Pristilomatidae
Genus:	Vitrea
Subgenus:	Crystallus
Species:	V. crystallina
Binomial name
Vitrea crystallina (O. F. Müller, 1774)

Vitrea crystallina is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pristilomatidae.

Description

For terms see gastropod shell.

The 1.4-2.1 x 3-4 mm. shell is variable. It has 4-5 whorls and the last whorl width seen from above 1.5-2 x of penultimate whorl. The umbilicus is narrow, much narrower than in Vitrea botterii, but clearly open, showing penultimate whorl, initially narrower, widened only at last whorl.Usually smaller than V. diaphana, and larger than V. contracta which has more densely coiled whorls.

Distribution

This species occurs in countries and islands including:

• Czech Republic
• Ukraine
• Great Britain
• Ireland
• and other areas

References

• Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.

External links

• taxonomy,short description, distribution, biology,status (threats), images Vitrea crystallina AnimalBase