Family: Test round, thin, firm to elastic, some with spines or spicules (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).
->> Description at WPRNO Google Image Search
Similar Genus -->> Chlamydophrys
Lecythium sp.
test 16 μm
Japan, 1998
Movies 
Lecythium sp.
test 16 μm
Mizumoto Park
Tokyo, 2001
Lecythium sp.
test 11-18 μm
Ikoi-no-mori park
Fuchu
Tokyo, 2004
Lecythium sp.
test 20 μm
Omine-numa 6
Minakami town
Gunma, 2007
