C. kahli f. oblonga , after Tarnogradskii, 1959
Cyclopyxis kahli f. oblonga (Tarnogradskii, 1959)
Centropyxis kahli f. oblonga Tarnogradskii, 1959
Diagnosis: Shell with all the characteristics of the type species described by Deflandre, except one: the oval shape in apertural view.
Dimensions: According to Tarnogradskii (1959): Shell diameter 92 μm; height 78 μm; pseudostome diameter 22—25 μm.
Habitat: ?
Geographical distribution: Russia.