|  Family: Test round, thick, firm, with rod-like radial structure (Illustrated Guide, 1985). Genus: 
Test consisting of a thin, flexible, homogeneous envelope, colorless or translucent, without adherent paticles; 
pseudostome terminal, elastic; cytoplasm colorless, granular, completely filling the test; 
nucleus large, placed posteriorly; pseudopodia numerous, long, branching but not anastomosing 
(Cash & Wailes, 1915).  
Pseudostome oval, cells clustered (Illustrated Guide, 1985).
 Species:
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