Family: Scales round to elliptical, thin.
Genus: Test round or oval in cross-section; pseudostome terminal with dentate scales (Illustrated Guide, 1985).

E. tuberculata 5 clips Japan, 1998	E. acanthophora 1 clip Higashi-hiroshima Hiroshima, 1998	E. acanthophora 2 clips Higashi-hiroshima Hiroshima, 1998
E. acanthophora 4 clips Higashi-hiroshima Hiroshima, 1998	E. acanthophora 2 clips Higashi-hiroshima Hiroshima, 1998	E. filifera 4 clips μm Higashi-hiroshima Hiroshima, 1998
E. acanthophora 2 clips Higashi-hiroshima Hiroshima, 1998	E. filifera 2 clips μm Higashi-hiroshima Hiroshima, 1998	E. tuberculata 4 clips riverside park Kuroiso Tochigi, 1999