Corythium dubium gigas
Corythium dubium gigas
C. dubium var. gigas, 79 µm



Corythion dubium var. gigas  Thomas, 1953


Diagnosis: shell ovoid, composed of oval shell-plates, irregularly arranged, very small and usually overlapping each other; aperture sub-terminal, oval and invaginated.


Dimensions: Length 76-90 µm; breadth 34-42 µm; mouth 14-18 µm.


Ecology: Sphagnum and mosses.


Remarks: This variety strongly resembles Trinema enchelys, but differs in the shape of the plate scales.