Argynnia dentistoma var. lageniformis  Playfair, 1917

Diagnosis: Shell broadly ovate as in the type, but drawn out and constricted above the pseudostome into a short neck. Pseudostome minutely crenulate by a regular series of marginal plates. Wall of the test formed of minute, irregular, angular plates (diam. About 6 µm).

Dimensions: Length 126 µm; width 90 µm; aperture 38 µm.

Habitat: Auburn, Australia