Genus Cyphoderiopsis  Playfair, 1917

Diagnosis: Shell smooth, hyaline, very like Cyphoderia ampulla but with a long, curved neck. Aperture circular, simple, with or without a narrow, projecting, chitinous collar. Body-scales nebeloid, circular, of various sizes, smaller on the neck, contiguous but not overlapping, fastened at the edges by little dots of cement.

Type species: Cyphoderiopsis longicollis Playfair, 1917

Measurements. Length 76-78 μm, breadth 29-32 μm, aperture 11-12.5 μm, scales up to 6 μm.

Ecology and distribution. Sphagnum, Australia.

Remarks: Playfair (1917): “A rare form out of Sphagnum. It is possible that the collar becomes invaginate sometimes, but I have not seen it so. In its characteristics, the test combines the features of Cyphoderia, Nebela and possibly also Trinema.”