Description of Pseudoraphidiophrys

Centroheliozoa with a periplast comprising two types of tangential scales: the internal layer plate-scales without a hollow marginal rim, and an external layer of plates with a well-developed sternum and radiating ribs. The base of the sternum may be expanded and concave to create a velum like extension of the scale. No light-microscopical records. Four species, all fresh-water, type species P. formosa