Genus Belaria De Saedeleer, 1934
Diagnosis: Shell hyaline, retort-shaped, with one side fastened to the substrate; shell divided in two compartments, separated by a diaphragm; shell with a neck. Shell composed of an organic material without any embedded xenosomes; color usually yellow-brown till dark-brown. Nucleus relatively large, globular with a central nucleolus. One contractile vacuole.
One species: Belaria bicorpor
Ecology: Freshwater and marine. Belgium, France, Netherlands.
I found this species three times, two specimens in the Netherlands and one in a small stream in Bretagne, France, all in freshwater.