Mazandaran Province (Forcart 1935 ).

Material examined: 35 ex., NMB 11518b “Stagnicola palustris“Zw. Nika und Aschref, Dr. Erni & Buxtorf 1934; 3 ex., NMB 11518a “Iran, Prov. Mazandaran. Meschhediser, Geniste am rechten Ufer des Babul ca. 300 m S der Mündung, -26 m Meereshöhe. Leg. 23.8.1931 & don. 1935 Drs. A. Erni & R. Buxtorf”.

An examination of the specimens from NMB identified by Forcart (1935) as Stagnicola palustris shows that these specimens are not conspecific with Stagnicola palustris. Namely, Forcart’s specimens clearly differ in the aperture, which is broader at the basis (Fig. 17) than in Stagnicola palustris. However, due to the fact that the shells of Stagnicola spp. are very variable, it is not possible to identify or eventually describe this specis as new to science without anatomical studies.